BIO1050 Cumulative Quiz Unit #3 Note Cards

Prokaryotic cells divide by a) binary fission. b) metastasis. c) cytokinesis. d) mitotic cell division. e) translation.

binary fission.

Crossing over disrupts the alignment of chromosomes on the metaphase plate and stops the cell at the spindle (anaphase) checkpoint. occurs during mitosis. creates new combinations of alleles in populations. occurs during meiosis II. occurs between identical sister chromatids.

creates new combinations of alleles in populations.

One duplicated chromosome has two sister chromatids. In prophase of mitosis you see 18 duplicated chromosomes in a cell. This cell type has n of a) 9 b) 72 c) 36 d) 2 e) 18

9

In humans, blastocysts normally implant in the a) uterus. b) oviduct. c) ovary. d) vagina. e) cervix.

uterus.

You find unduplicated chromosomes in G1 of the cell cycle. You find duplicated chromosomes in G2 of the cell cycle. How many double helices of DNA are in one chromosome during G1 phase? a) 1 b) 4 c) 2 d) 23 e) 8

1

How many double helices of DNA are in a tetrad? a) 2 b) 23 c) 4 d) 8 e) 1

4

During telophase of mitosis, the chromosomes a) condense. b) duplicate. c) form one circular chromosome. d) line up in the middle of the cell. e) uncoil from their condensed state.

uncoil from their condensed state.

Where do the chromosomes in a human zygote come from? a) 23 from a sperm cell, 23 from an egg b) 46 from each gamete c) 46 from a sperm cell d) 46 from an egg e) 46 from the mitotic division of a gamete

23 from a sperm cell, 23 from an egg

Normally, eukaryotic cells divide to a) replace dead cells. b) add more cells during growth of an infant. c) All of the other answers are correct. d) repair wounds. e) add more cells during growth of an child.

All of the other answers are correct.

Homologous chromosomes separate from each other during meiosis. This happens during a) prophase I b) anaphase I c) anaphase II d) prophase II e) telophase I

anaphase I

Sister chromatids are made by a) mutagenesis. b) the cytoskeleton during G2 phase. c) DNA synthesis during the G1 phase. d) DNA synthesis during S phase. e) anaphase of mitosis and meiosis.

DNA synthesis during S phase.

There is one gene for protein R. It is called gene R. Gene R has alleles G and g in the population you are studying. Which of the following is always true? a) In one cell of one individual, both R alleles are from the same parent. b) If one allele for gene R is on chromosome 20, then an allele for gene R is at the same locus on the other copy of chromosome 20. c) If one allele for gene X is on chromosome 12, then the other allele for gene R is at the same locus on chromosome 4. d) If one cell of one individual has the G allele on chromosome 9 from the mother, then that individual has a g allele on chromosome 9 from the father.

If one allele for gene R is on chromosome 20, then an allele for gene R is at the same locus on the other copy of chromosome 20.

What is an advantage of sexual reproduction compared to asexual reproduction? a) It is faster than asexual reproduction. b) In low density populations a male and female do not need to meet. c) The number of chromosomes doubles with each generation. d) It generates genetic diversity. e) It produces organisms identical to the parent that are genetically fit for the environment.

It generates genetic diversity.

What is an advantage of asexual reproduction over sexual reproduction? a) It is more complex than sexual reproduction. b) It is effective in all environments, whereas sexual reproduction only works in the water. c) It generates more new combinations of alleles than sexual reproduction. d) It is more effective than sexual reproduction when population density is low. e) It is slower than sexual reproduction.

It is more effective than sexual reproduction when population density is low.

Which of the following situations is most likely if a eukaryotic cell is stuck at the M checkpoint? a) The cell is in the process of DNA replication. b) There are errors in the replication of the DNA. c) The mitotic spindles are just starting to form. d) The cell is in mitosis with all but two of the chromosomes aligned on the metaphase plate. e) There are no growth factors, or nutrients.

The cell is in mitosis with all but two of the chromosomes aligned on the metaphase plate.

Which of the following describes a cell with n = 9? a) The cell has 18 tetrads during prophase I. b) The cell has 23 tetrads during prophase I. c) The cell has 9 duplicated chromosomes on the metaphase plate during metaphase of mitosis. d) The cell has 9 tetrads on the metaphase plate during metaphase I. e) The cell has 18 types of chromosomes.

The cell has 9 tetrads on the metaphase plate during metaphase I.

Which of the following happens LAST during the mitotic cell cycle? a) The sister chromatids separate. b) Sister chromatids align on the metaphase plate. c) The cleavage furrow forms. d) Microtubules emerge from the centrosomes. e) The spindles start to pull on the kinetochores of sister chromatids.

The cleavage furrow forms.

Of the events below, which would happen NEXT after the DNA was replicated? a) The chromosomes would align on the metaphase plate. b) The mitotic spindle would start to form. c) The nuclear envelop would form around chromosomes again. d) The sister chromatids would separate. e) The plasma membrane would form a cleavage furrow and would divide the cell into two daughter cells.

The mitotic spindle would start to form.

Of the events below, which would happen NEXT in the mitotic cell cycle after the DNA was replicated? a) The mitotic spindle would start to form. b) The plasma membrane would form a cleavage furrow and would divide the cell into two daughter cells. c) The sister chromatids would separate. d) The nuclear envelop would form around chromosomes again. e) The chromosomes would align on the metaphase plate.

The mitotic spindle would start to form.

Imagine you work in a lab and prepare two Petri dishes with plenty of nutrients and exactly the same density of cultured skin cells. The density starts at 100 cells per dish. The cells are low enough density that they are not touching each other. The professor you work with asked you to test substance Q to see if it is a growth factor. Which experiment and result would most strongly support the hypothesis that substance Q is a growth factor? a) You add Q to one dish; when you count later the dish with Q has 300 cells and the dish without Q has 100 cells. b) You add Q to both dishes; when you count later they each have 100 cells. c) You add Q to both dishes; when you count later they each have 500 cells. d) You add Q to one dish; when you count later both dishes have 800 cells. e) You add Q to one dish; when you count later the dish with Q has 100 cells and the dish without Q has 400 cells.

You add Q to one dish; when you count later the dish with Q has 300 cells and the dish without Q has 100 cells.

Which of the following organisms is using asexual reproduction? a) humans that reproduce with in vitro fertilization b) a budding hydra c) frogs that lay eggs that are fertilized in the water d) hermaphroditic earthworms that each produce viable eggs and sperm e) an anemone that reproduces by making eggs that are fertilized

a budding hydra

During cytokinesis a ) actin microfilaments divide the cell into two cells. b) the sperm cell merges with the eggs cell. c) the chromosomes move from the center to the poles of the cells. d) the organelles duplicate. e) the centrosomes move through the cytoplasm to the poles of the cells.

actin microfilaments divide the cell into two cells.

Unlike during mitosis, during meiosis homologous chromosomes a) are pulled on by microtubules. b) all end up in the same daughter cell. c) each have two sister chromatids. d) move to opposite poles of dividing cells. e) align with each other as tetrads on the metaphase plate.

align with each other as tetrads on the metaphase plate.

Sister chromatids separate from each other during a) prophase II b) prophase I c) anaphase I d) telophase I e) anaphase II

anaphase II

If a cell is stopped at the M checkpoint, it will not enter the next phase of mitosis, which is a) prophase/prometaphase. b) interphase. c) telophase. d) anaphase. e) metaphase.

anaphase.

The sister chromatids have just separated and are now the daughter chromosomes moving to opposite poles of a cell in mitosis. This cell is in a) interphase. b) metaphase. c) telophase. d) prophase/prometaphase. e) anaphase.

anaphase.

The four chromatids of a tetrad (bivalent) a) are each in a different cell at the end of meiosis II. b) are each in a different cell at the end of meiosis I. c) end up in the same cell at the end of meiosis. d) align on the metaphase plate together during mitosis. e) are in pairs of homologous chromosomes at the end of meiosis I, with sister chromatids in different cells.

are each in a different cell at the end of meiosis II.

The microtubules of the cytoskeleton are made of tubulin. The microtubules a) are small in diameter and divide the cell during cytokinesis. b) are large in diameter and divide the cell during cytokinesis. c) never change shape. d) are large in diameter and move the chromosomes during mitosis. e) are small in diameter and determine the shape of the cell.

are large in diameter and move the chromosomes during mitosis.

Homologous chromosomes are two chromosomes of the same type. Homologous chromosomes a) form tetrads during mitosis. b) are completely different because one came from mom and the other from dad. c) have the same alleles, gene loci, lengths and centromere positions as each other. d) are similar, but not exactly the same because one came from mom and the other from dad. e) are exactly the same because they one was duplicated from the other.

are similar, but not exactly the same because one came from mom and the other from dad.

Which of the following is LEAST likely to lead to cancer? a) skipping medical cancer screening, especially if you have a family history of cancer b) avoiding smoking c) avoiding fiber in the diet d) avoiding exercise e) getting a lot of exposure to the sun

avoiding smoking

Which of the following lists includes things that happen to the cytoskeleton during the mitotic cell cycle in the correct order? a) mitotic spindles form, centrosomes duplicate, cytokinesis, microtubules pull sister chromatids apart b) mitotic spindles form, microtubules pull sister chromatids apart, centrosomes duplicate, cytokinesis c) centrosomes duplicate, mitotic spindles form, microtubules pull sister chromatids apart, cytokinesis d) microtubules pull sister chromatids apart, cytokinesis, centrosomes duplicate, mitotic spindles form e) microtubules pull sister chromatids apart, centrosomes duplicate, mitotic spindles form, cytokinesis

centrosomes duplicate, mitotic spindles form, microtubules pull sister chromatids apart, cytokinesis

In a woman, the egg travels from the ovary to the uterus through the a) oviduct b) vagina c) vulva d) cervix e) urethra

cervix

Removing growth factors from the environment around dividing cells is most likely going to a) stop the cell cycle in the S phase. b) decrease the rate of cell division. c) send the cells through the G1 checkpoint. d) stop the cell cycle at the G2 checkpoint. e) send the cells through the M checkpoint.

decrease the rate of cell division.

During prophase I and metaphase I the cells are _________, and during prophase II and metaphase II they are ____________. a) diploid, diploid b) diploid, haploid c) haploid, diploid d) haploid, haploid

diploid, haploid

For this question assume that the cells do NOT have density-dependent inhibition. If a cell had a mutation that caused a growth factor receptor to be stuck in the shape it normally had when growth factors were bound, then you would expect cells with this mutation to a) divide less frequently than usual. b) divide until they ran out of growth factor. c) divide more frequently than usual. d) divide until they touched each other. e) stop dividing.

divide more frequently than usual.

If a mutation that caused a relay protein for a growth factor receptor to be stuck in the shape it normally had when growth factors were bound, then you would expect cells with this mutation to a) divide until they ran out of growth factor. b) divide less frequently than usual. c) stop dividing. d) divide more frequently than usual. e) divide until they touched each other.

divide more frequently than usual.

You have a cell line that does not have density-dependent inhibition. You mutate a receptor for brain-derived growth factor in the cell line. The mutation makes the receptor take the shape it would be in if the growth factor were bound to the receptor. In other words, the receptor becomes an oncogene. Compared to cells of this line without the mutation, the cells with the oncogene would a) divide more frequently than usual. b) stop dividing. c) stay in G1 phase at the G1 checkpoint. d) start making gametes instead of more of the same type of cells. e) divide until they touched each other, then stop.

divide more frequently than usual.

You have a cell line that does not have density-dependent inhibition. You mutate a receptor for brain-derived growth factor in the cell line. The mutation makes the receptor take the shape it would be in if the growth factor were bound to the receptor. In other words, the receptor becomes an oncogene. Compared to cells of this line without the mutation, the cells with the oncogene would... a) stay in G1 phase at the G1 checkpoint. b) start making gametes instead of more of the same type of cells. c) divide more frequently than usual. d) divide until they touched each other, then stop. e) stop dividing.

divide more frequently than usual.

The cytoskeleton plays a big role in the mitotic cell cycle. Actin microfilaments are used in the mitotic cell cycle for a) translation. b) pulling the sister chromatids apart. c) transcription. d) replicating the DNA. e) dividing the cell in two during cytokinesis.

dividing the cell in two during cytokinesis.

During the mitotic cell cycle the cytoskeleton does NOT a) make cells divide by cytokinesis. b) duplicate the chromosomes, replicating the DNA. c) pull the sister chromatids apart. d) make the cell elongate. e) pull on the duplicated chromosomes, so that they line up on the metaphase plate.

duplicate the chromosomes, replicating the DNA.

During the mitotic cell cycle the cytoskeleton does NOT a) make cells divide by cytokinesis. b) make the cell elongate. c) pull on the duplicated chromosomes, so that they line up on the metaphase plate. d) pull the sister chromatids apart. e) duplicate the chromosomes, replicating the DNA.

duplicate the chromosomes, replicating the DNA.

During the mitotic cell cycle the cytoskeleton does NOT a) pull the sister chromatids apart. b) pull on the duplicated chromosomes, so that they line up on the metaphase plate. c) make cells divide by cytokinesis. d) duplicate the chromosomes, replicating the DNA. e) make the cell elongate.

duplicate the chromosomes, replicating the DNA.

When in the life cycle do cells go from being haploid to being diploid? a) when gametes are made in the gonads b) during the mitotic cell cycle c) during growth and development of the muscles and skeleton d) during fertilization e) during the meiotic cell cycle

during fertilization

You would find sister chromatids a) during the G2 phase of the cell cycle. b) in the cytoplasm of a cell that is not dividing. c) during the G1 phase of the cell cycle. d) during cytokinesis. e) during the mitotic cell cycle before DNA replication.

during the G2 phase of the cell cycle.

In a cell that will undergo meiosis to make sperm cells, one copy of each type of chromosome came from the mother and the other copy came from the father of the organism. During meiosis a) all of the chromosomes from the mother end up in the same daughter cell. b) each of the 46 chromosomes from the mother ends up in a different daughter cell. c) each daughter cell usually has alleles from each parent. d) each daughter cell is genetically identical to the original cell. e) all of the chromosomes from the father end up in the same daughter cell.

each daughter cell usually has alleles from each parent.

In a cell that will undergo meiosis to make sperm cells, one copy of each type of chromosome came from the mother and the other copy came from the father of the organism. During meiosis a) each of the 46 chromosomes from the mother ends up in a different daughter cell. b) all of the chromosomes from the father end up in the same daughter cell. c) each daughter cell is genetically identical to the original cell. d) all of the chromosomes from the mother end up in the same daughter cell. e) each daughter cell usually has alleles from each parent.

each daughter cell usually has alleles from each parent.

Consider the human life cycle. Which of the following type of cell is haploid? a) eggs b) cells of the uterus c) liver cells d) skin cells e) neurons

eggs

Which happens next after gametes are made in the human life cycle? a) meiosis of diploid cells b) differentiation of cell types c) mitosis of haploid cells d) mitosis of diploid cells e) fertilization

fertilization

Which of the following refers to a type of sexual reproduction? a) fission b) fertilization of an egg c) fractionation plus regeneration d) budding e) mitosis

fertilization of an egg

Which of the following is the correct order of the events of pregnancy through childbirth? a) dilation, fertilization, expulsion, dilation b) implantation, fertilization, expulsion, dilation c) fertilization, dilation, expulsion, implantation d) fertilization, implantation, dilation, expulsion

fertilization, implantation, dilation, expulsion

For each pair of homologous chromosomes in your somatic cells, one homolog came from your mom and one from your dad. Because humans produce gametes for sexual reproduction by the process of meiosis a) the homologs from your mom will be passed to your daughters and the homologs from your dad will be passed to your sons. b) the homologs with dominant alleles will be passed on more often than the homologs with recessive alleles. c) All of the other answers are correct. d) both of those homologs will be passed on to each of your children. e) for one pair of homologous chromosomes, each of your children has a 50% chance of inheriting the homolog from your mom and a 50% chance of inheriting the homolog from your dad.

for one pair of homologous chromosomes, each of your children has a 50% chance of inheriting the homolog from your mom and a 50% chance of inheriting the homolog from your dad.

Each tetrad of duplicated homologous chromosomes a) separate during anaphase II of meiosis. b) separates during metaphase II of meiosis. c) forms during the G1 phase of the meiotic cell cycle. d) forms during prophase II of meiosis. e) forms during prophase I of meiosis.

forms during prophase I of meiosis.

You start with one cell where the number of types of chromosomes (n) is equal to twelve, and watch it undergo meiosis. At the end of telophase II and cytokinesis II you would see a) four cells, each with twenty-four chromosomes. b) two cells, each with twenty-four chromosomes. c) four cells, each with six chromosomes. d) four cells, each with twelve chromosomes. e) two cells, each with six chromosomes.

four cells, each with twelve chromosomes.

Homologous chromosomes do NOT a) have centromeres in the same place. b) have the same alleles. c) form tetrads during meiosis. d) have the same length. e) have the same gene loci.

have the same alleles.

Sister chromatids a) have different lengths. b) have centromeres in different locations. c) have the same genes, but in different orders from each other. d) have different alleles. e) have the same genes.

have the same genes

Centromeres a) are the strands of DNA that have the genes in them. b) are on the opposite end of the mitotic spindle from the kinetochores. c) divide cells in two at the cleavage furrow. d) replicate the DNA. e) hold sister chromatids together through metaphase.

hold sister chromatids together through metaphase.

Which of the following happens FIRST of the steps of meiosis listed below? a) teleophase I and cytokinesis I b) the nuclear envelope reforms c) spindle microtubules from opposite poles of the cell attach to the kinetochores of sister chromatids, aligning sister chromatids towards opposite poles d) sister chromatids separate e) homologous chromosomes separate

homologous chromosomes separate

Meiosis I, meiosis II and mitosis have similarities and differences. A major difference between meiosis I and mitosis is that during meiosis I a) homologous non-sister chromatids exchange alleles by crossing over. b) there is a metaphase plate. c) the nuclear envelope dissolves. d) the cytoskeleton forms a spindle that separates chromatids. e) sister chromatids separate from each other and go to opposite poles.

homologous non-sister chromatids exchange alleles by crossing over.

Where does fertilization normally take place? a) in the oviduct b) in the uterus c) in the cervix d) in the vas deferens e) in the ovary

in the oviduct

You look at a cell and see 14 tetrads on the metaphase plate. From this information you would know that a) it is a human cell in metaphase II. b) it is a non-human cell in tetraphase I. c) it is a non-human cell in metaphase. d) it is a human cell in metaphase. e) it is a non-human cell in metaphase I.

it is a non-human cell in metaphase I.

You look at a cell and see 19 tetrads on the metaphase plate. From this information you would know that a) it is a non-human cell in tetraphase I. b) it is a non-human cell in metaphase. c) it is a non-human cell in metaphase I. d) it is a human cell in metaphase. e) it is a human cell in metaphase II.

it is a non-human cell in metaphase I.

Exactly one copy of each type of chromosome is in each daughter cell after a) meiosis. b) mitosis. c) S phase of interphase. d) prophase I. e) fertilization.

meiosis.

You are studying cells where the number of types of chromosomes (n) is equal to seven. You look down the microscope and see one cell with seven duplicated chromosomes lined up on the metaphase plate. This cell is in a) metaphase I of meiosis. b) metaphase of mitosis. c) anaphase of mitosis. d) prophase I of meiosis. e) metaphase II of meiosis.

metaphase II of meiosis.

You are studying cells where the number of types of chromosomes (n) is equal to seven. You look down the microscope and see one cell with seven duplicated chromosomes lined up on the metaphase plate. This cell is in a) metaphase I of meiosis. b) prophase I of meiosis. c) metaphase II of meiosis. d) metaphase of mitosis. e) anaphase of mitosis.

metaphase II of meiosis.

There is exactly one double helix of DNA in a) the nucleus of a typical eukaryote. b) one non-duplicated chromosome. c) one duplicated chromosome. d) a pair of sister chromatids. e) the human genome (all of the chromosomes of one human)

one non-duplicated chromosome.

In a woman, the egg travels from the ovary to the uterus through the a) vagina b) cervix c) vulva d) oviduct e) urethra

oviduct

Binary fission a) is how multicellular organisms end up with two arms, one on each side of the body. b) results in two daughter cells, each with one copy of the circular chromosome. c) usually has the cell wall and plasma membrane separate the cell in two before the duplicated chromosomes separate. d) is how multicellular organisms repair wounds. e) is how eukaryotes make more cells.

results in two daughter cells, each with one copy of the circular chromosome.

Which of the following would be most likely to lead to cancer? a) getting regular medical checks b) getting a lot of exercise c) eating a high-fiber, low fat diet d) avoiding too much sun e) smoking

smoking

When there are mistakes in the replication of DNA during the mitotic cell cycle, the cell is most likely going to a) eliminate the defective chromosomes from the cell and continue dividing with only the non-mutated chromosomes. b) stop at the G1 checkpoint. c) stop at the M checkpoint. d) divide more rapidly than usual. e) stop at the G2 checkpoint.

stop at the G2 checkpoint.

When there are mistakes in the replication of DNA during the mitotic cell cycle, the cell is most likely going to a) stop at the G2 checkpoint. b) divide more rapidly than usual. c) eliminate the defective chromosomes from the cell and continue dividing with only the non-mutated chromosomes. d) stop at the M checkpoint. e) stop at the G1 checkpoint.

stop at the G2 checkpoint.

The new nuclear envelopes are forming around the daughter chromosomes at opposite poles of a cell in mitosis. This cell is in a) metaphase. b) anaphase. c) telophase. d) prophase/prometaphase. e) interphase.

telophase.

In a man, the sperm are released into the seminiferous tubules of the _________ in the scrotum, before traveling through the epididymus. a) vas deferens b) testicle c) urethra d) prostate e) penis

testicle

Meiosis I, meiosis II and mitosis have similarities and differences. A major difference between meiosis I and mitosis is that during meiosis I a) there is a metaphase plate. b) the nuclear envelope dissolves. c) tetrads form. d) sister chromatids separate from each other and go to opposite poles. e) the cytoskeleton forms a spindle that separates chromatids.

tetrads form.

During the human life cycle a) the zygotes are haploid. b) the adults and gametes are diploid. c) the adults and gametes are haploid. d) the adults are diploid and the gametes are haploid. e) the adults are haploid and the gametes are diploid

the adults are diploid and the gametes are haploid.

Which of the following happens last of the following steps of fertilization? a) the fusion of the egg and sperm nuclei b) the sperm binding the sperm receptors c) the vitelline reaction d) the acrosome reaction e) fusion of the plasma membranes of the sperm and egg

the fusion of the egg and sperm nuclei

Which of the following happens last of the following steps of fertilization? a) the sperm binding the sperm receptors b) the vitelline reaction c) fusion of the plasma membranes of the sperm and egg d) the fusion of the egg and sperm nuclei e) the acrosome reaction

the fusion of the egg and sperm nuclei

The purpose of _______________ is making more cells to repair wounds and replace dead cells, for asexual reproduction of single-celled eukaryotes, and for growth during development. a) binary fission b) the meiotic cell cycle c) the mitotic cell cycle d) mitosis e) meiosis

the mitotic cell cycle

You are working with environmental contaminants, and have found chemical A in the water supply. You are concerned it is a growth factor, so you run experiments to test this hypothesis. You have two sets of identical flasks of cells, set 1 and set 2. You do not add chemical A to set 1, but you add chemical A to set 2. You wait a three days and measure the number of cells again. The data that is most convincing that chemical A is a growth factor would be a) the number of cells in set 1 is larger at the end of the experiment than at the beginning. b) the number of cells in set 1 is smaller than the number in set 2 at the end of the experiment. c) the number of cells in set 1 is larger than the number in set 2 at the end of the experiment. d) the number of cells in set 1 is equal to the number in set 2 at the end of the experiment. e) the number of cells in set 2 is larger at the end of the experiment than at the beginning.

the number of cells in set 1 is smaller than the number in set 2 at the end of the experiment.

Which part of the female reproductive system is where meiosis occurs? a) All of the other answers are correct. b) the vulva c) the vagina d) the ovaries e) the oviduct

the ovaries

In a human, the egg travels from... a) the cervix through the vagina to the ovary then through the oviduct to the uterus. b) the vagina through the cervix to the uterus then through the oviduct to the ovary. c) the uterus through the oviduct to the ovary then trough the vagina and cervix. d) the oviduct through the ovary to the cervix through the vagina and uterus. e) the ovary through the oviduct to the uterus through the cervix and vagina.

the ovary through the oviduct to the uterus through the cervix and vagina.

Which of the following is LEAST likely to prevent fertilization and/or implantation? a) the rhythm method b) the morning after pill c) birth control pill d) latex condoms e) abstinence

the rhythm method

Which of the following has to happen last during mitosis? a) the chromosomes condense b) microtubules attach to the kinetochores c) chromosomes line up in a plane at the center of the cell d) the homologous chromosomes move to opposite poles of the cell e) the sister chromatids move to opposite poles of the cell

the sister chromatids move to opposite poles of the cell

During anaphase of mitosis a) the cell cycle will stop if there are not enough growth factors. b) the nuclear envelope dissolves. c) the spindles disappear. d) the sister chromatids separate from each other. e) the chromosomes are disorganized as unbundled DNA.

the sister chromatids separate from each other.

Which of the following has to occur during mitosis before anaphase? a) the DNA uncoils b) the spindle microtubules disappear c) the nuclear envelopes reform d) the sister chromatids separate e) the spindle microtubules attach to the kinetochores

the spindle microtubules attach to the kinetochores

Which of the following has to occur during mitosis before metaphase? a) the sister chromatids separate b) the nuclear envelopes reform c) the spindle microtubules disappear d) the DNA uncoils e) the spindle microtubules attach to the kinetochores

the spindle microtubules attach to the kinetochores

Which of the following has to occur during mitosis before metaphase? a) the spindle microtubules attach to the kinetochores b) the sister chromatids separate c) the nuclear envelopes reform d) the spindle microtubules disappear e) the DNA uncoils

the spindle microtubules attach to the kinetochores

In a human, the sperm travel from a) the urethra through the vas deferens and testes then the epididymis. b) the epididymis through the testes and urethra then vas deferens. c) the vas deferens through the urethra and epididymis then the testes. d) the testes through the epididymis and vas deferens then urethra. e) the testes through the vas deferens and the urethra then epididymis.

the testes through the epididymis and vas deferens then urethra.

Of the following choices, in humans the next location a sperm cell would be found in after being in the vas deferens would be a) scrotum. b) the epididymus. c) the urethra. d) testes. e) seminiferous tubules.

the urethra.

Which part of the female reproductive system is where the sperm are usually deposited and is also the birth canal? a) the ovary b) the vagina c) the uterus d) the vulva e) the oviduct

the vagina

Which of the following prevents polyspermy? a) the sperm receptors b) meiosis c) the jelly coat on the egg d) the vitelline reaction e) having only on gene for each protein

the vitelline reaction

The purpose of the meiotic cell cycle is a) to generate haploid gametes for sexual reproduction. b) merge a sperm cell with an egg. c) to cause cancer. d) to make more exact copies of a cell. e) to make more copies of a cell for wound healing.

to generate haploid gametes for sexual reproduction.

The purpose of mitosis is a) to get exactly one copy of each chromosome to each daughter cell. b) to duplicate the DNA during cytokinesis. c) to remove DNA that was damaged by mutations. d) to get exactly two sister chromatids to each daughter cell. e) to check for damage to the DNA.

to get exactly one copy of each chromosome to each daughter cell.

The purpose of the meiosis is a) to get exactly one copy of each type of chromosome into each daughter cell. b) to make more exact copies of a cell. c) to make more copies of a cell for wound healing. d) merge a sperm cell with an egg. e) to cause cancer.

to get exactly one copy of each type of chromosome into each daughter cell.

The purpose of the meiosis is a) to make more copies of a cell for wound healing. b) to make more exact copies of a cell. c) to cause cancer. d) merge a sperm cell with an egg. e) to get exactly one copy of each type of chromosome into each daughter cell.

to get exactly one copy of each type of chromosome into each daughter cell.

When do cells divide by going through the mitotic cell cycle? a) to replace dead cells b) to make zygotes c) to make eggs d) to make sperm e) to make gametes

to replace dead cells

When do cells divide by going through the mitotic cell cycle? a) to make zygotes b) to make eggs c) to make gametes d) to make sperm e) to replace dead cells

to replaced dead cells