Biology Exam 3 (2)
11) The CORRECT sequence of stages of mitosis is ________. A) prophase, metaphase, anaphase, telophase B) telophase, prophase, anaphase, metaphase C) anaphase, interphase, prophase, metaphase, telophase D) interphase, prophase, metaphase, anaphase, telophase
A
13) Which of these events occurs during anaphase? A) Sister chromatids become separate chromosomes. B) Chromosomes line up in the middle of the cell. C) The nuclear envelope reappears. D) The nuclear envelope breaks up.
A
14) During telophase, ________. A) the events of prophase are reversed B) chromosomes line up in the middle of the cell C) sister chromatids become separate chromosomes D) the nuclear envelope breaks up
A
16) Cytokinesis typically begins during the ________ stage of mitosis. A) telophase B) prophase C) metaphase D) anaphase
A
19) Homologous chromosomes ________. A) carry genes controlling the same inherited characteristics B) include only the autosomes C) are a set of chromosomes that the cell received from one parent D) carry the same versions of all genes
A
23) Sexual reproduction in humans ________. A) allows a haploid sperm cell to fertilize a haploid egg cell B) produces a haploid individual C) produces an individual with 23 chromosomes D) combines two diploid gametes, producing a zygote
A
24) In meiosis, how does prophase I differ from prophase II? A) During prophase I there is one diploid cell; during prophase II there are two haploid cells. B) During prophase I chromosomes line up single file in the middle of the cell; during prophase II the chromosomes line up in double file in the middle of the cell. C) During prophase I the chromosomes coil up; the chromosomes are not coiled up during prophase II. D) In prophase I the sister chromatids are attached; in prophase II the sister chromatids are separated.
A
3) The chromosomes of eukaryotic cells are found in the ________. A) nucleus B) centriole C) Golgi apparatus D) nucleolus
A
30) One difference between mitosis and meiosis is ________. A) mitosis produces cells genetically identical to the parent cell, but meiosis does not B) mitosis produces more daughter cells for each division than meiosis C) mitosis produces haploid cells, but meiosis produces diploid cells D) mitosis requires only one parent cell, but meiosis requires two parent cells
A
36) How many chromosomes can a gamete possess as a result of nondisjunction? A) n + 1 or n - 1 B) 2n + 1 or 2n - 1 C) 2n - 1 only D) 2n + 1 or n - 1
A
4) Chromatin consists of ________. A) DNA and protein B) RNA and protein C) protein only D) DNA only
A
43. Which chromosome configuration designates a person with Turner syndrome? A. XO B. XY C. XYY D. XX E. XXY
A
6) Sister chromatids are joined at the ________. A) centromere B) spindle C) centrosome D) centriole
A
10) Which of the following is a stage of mitosis? A) cytokinesis B) telophase C) interphase D) DNA synthesis
B
21) What chromosomes belong to a normal human female? A) 22 autosomes and 2 X chromosomes B) 44 autosomes and 2 X chromosomes C) 44 autosomes, one X chromosome, and one Y chromosome D) 46 autosomes and two X chromosomes
B
25) How much genetic material is present in a cell during prophase I compared to a cell that has completed meiosis II? A) one-quarter as much B) four times as much C) one-half as much D) twice as much
B
26) During metaphase I, ________. A) crossing over occurs B) homologous chromosomes line up in the middle of the cell C) the nuclear envelope breaks up D) sister chromatids separate and migrate to opposite poles
B
7) Which of the following occurs during interphase? A) Chromatin becomes tightly coiled. B) Chromosome duplication occurs. C) Sister chromatids separate. D) The mitotic spindle forms.
B
1) A(n) ________ is an example of an organism that can sometimes reproduce asexually by parthenogenesis. A) cat B) human C) Komodo dragon D) mouse
C
17) What is the difference between a benign and a malignant tumor? A) Benign tumors are composed of cancer cells; malignant tumors are not. B) Benign tumors are not the result of a failure of a cell cycle control system; malignant tumors are. C) Benign tumors do not metastasize; malignant tumors do. D) Benign tumors do not form lumps; malignant tumors do form lumps.
C
18) Which of the following will help prevent cancer and increase survival? A) Eat a low-fiber, low-fat diet. B) Limit exercise. C) Seek early detection of tumors. D) Smoke only cigarettes.
C
2) Ordinary cell division produces two daughter cells that are genetically identical. This type of cell division is important for all of the following functions EXCEPT ________. A) growth of a multicellular organism B) cell replacement C) production of sperm and eggs D) asexual reproduction
C
20) What chromosomes belong to a normal human male? A) 22 autosomes and two Y chromosomes B) 44 autosomes and two Y chromosomes C) 44 autosomes, one X chromosome, and one Y chromosome D) 46 autosomes, one X chromosome, and one Y chromosome
C
27) Upon completion of telophase I and cytokinesis, there is(are) ________ cell(s). A) four haploid B) two diploid C) two haploid D) one diploid
C
32) Which of the following is the best description of the events of anaphase I? A) Half of the chromosomes inherited from the mother go to one pole along with half of the chromosomes inherited from the father. B) Sister chromatids separate and the daughter chromosomes migrate to opposite poles. C) Homologous chromosomes randomly separate and migrate to opposite poles. D) All of the chromosomes inherited from the mother go to one pole of the cell, and all of the chromosomes inherited from the father go to the other pole.
C
33) For a species with four pairs of chromosomes, ________ chromosome combinations are possible. A) 4 B) 8 C) 16 D) 20
C
37) How many chromosomes does an individual with Turner syndrome have? A) 2n + 1 B) n + 1 C) 2n − 1 D) n − 1
C
38) Sexual reproduction appears to be absent in bdelloid rotifers. Which of these, if found in this group, would bring into question the idea that they reproduce ONLY asexually? A) female rotifers with eggs B) significant differences of two different alleles among different populations (one population having mostly allele A and one having mostly a). C) cells in which meiosis occurs D) related groups (not bdelloid rotifers) which reproduce both sexually and asexually.
C
39) Which of these describes the type of reproduction that is most adaptive in a rapidly changing environment with many different parasitic diseases present? A) asexual reproduction because the currently successful genotypes can reproduce quickly B) asexual reproduction, because asexual reproduction uses less energy, which leaves more for each individual to adapt to the changing environment C) sexual reproduction because the diversity of genotypes increases the likelihood that there is one which can survive in a new environment D) sexual reproduction because this type of reproduction allows the production of a greater number of offspring thus providing more individuals to take advantage of any environmental challenges presented
C
40. The second meiotic division is essentially a mitotic division except for the fact that the cells produced are A. diploid. B. somatic. C. haploid. D. polyploidy. E. autosomal.
C
8) The mitotic cell cycle results in the production of ________. A) four cells, each with the same amount of genetic material and the same genetic information B) two cells, each with the same amount of genetic material but with different genetic information C) two cells, each with the same amount of genetic material and the same genetic information D) four cells, each with the same amount of genetic material but with different genetic information
C
12) During metaphase, ________. A) the nuclear envelope breaks up B) sister chromatids separate C) centromeres divide D) chromosomes line up in the middle of the cell
D
15) A cell that completed the cell cycle without undergoing cytokinesis would ________. A) have less genetic material than it started with B) not have completed anaphase C) have its chromosomes lined up in the middle of the cell D) have two nuclei
D
22) Chromosomes that do NOT determine the sex of an individual are called ________. A) homologous chromosomes B) nonhomologous chromosomes C) sex chromosomes D) autosomes
D
28) Which of the following is a characteristic seen in prophase I that does NOT occur in prophase II? A) Chromosomes move to the middle of the cell. B) Spindle formation occurs. C) The number of chromosomes doubles. D) Crossing over occurs.
D
29) Anaphase II is essentially the same as mitotic anaphase except that in anaphase II ________ and in mitotic anaphase ________. A) the cells are diploid... the cells are haploid B) chromosomes line up double file in the middle of the cell... chromosomes line up single file in the middle of the cell C) crossing over occurs... crossing over does not occur D) the cells are haploid and sister chromatids separate... the cells have the same number of chromosomes as the original cell and sister chromatids separate
D
31) Genetic variation is accomplished by all but one of the following. Choose the exception. A) the events of meiosis I B) crossing over C) independent assortment D) the events of meiosis II
D
34) Crossing over during prophase I results in ________. A) nondisjunction B) reciprocal translocation C) duplication D) genetic recombination
D
35) A karyotype (a chromosome display) would be unable to determine ________. A) sex B) Down syndrome C) Turner syndrome D) eye color
D
41. A person with Klinefelter syndrome has long arms, long legs and some breast development due to which chromosomal anomaly? A. XYY B. Trisomy 18 C. Trisomy 13 D. XXY E. Monosomy X
D
5) A duplicated chromosome consists of two ________. A) centromeres B) centrosomes C) genomes D) sister chromatids
D
9) Which of the following occurs during prophase? A) Chromosomes line up on the midline of the cell. B) The nuclear envelope forms. C) Sister chromatids separate. D) The mitotic spindle begins to form.
D
42. A geneticist is studying the failure of chromosomes to separate properly during meiosis. Which of the following would he be studying? A. crossing-over B. synapsis C. translocation D. inversion E. nondisjunction
E
