Chapter 6 Biology

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An actively dividing cell has six chromosomes. How many sister chromatids are present within this cell at the end of G2 phase

12

A duplicated chromosome consists of how many sister chromatids

2

If a plant has a total of 18 chromosomes, how many chromosomes would be present in each of its gametes

9

Which phase of the cell cycle does the cell increase in size in preparation for division

G Phase

Which of the following statements about cell division is correct

It is the process by which organisms grow and maintain their issues

Which of the following differentiates meiosis from mitosis

Mitosis is used fro the repair of cells, whereas meiosis creates cells for sexual reporduction

Which of the following accurately describes crossing over

Paternal chromosome 7 exchanges segments of DNA with maternal chromosome 7

Which phase of the cell cycle is the genetic material duplicated

S phase

What are the stages of interphase

S, G1, and G2

What is the significance of crossing over

The resulting gametes will have different gene combination than their parent cells' gene combinations

Which of the following best exemplifies homologous chromosomes

a tetrad

Which of the following accurately describes the similarities between mitosis, meiosis, and binary fission

all three of the processes are used to produce daughter cells

The G0 phase of the cell cycle is distinguished by

an absence of preparation for DNA synthesis

Which of the following foods is most likely to contain haploid cells

an egg

Cells that demonstrate anchorage independence

are primed to become metastatic

A researcher is recording the process of bacteria cell division using time-lapse microscopy. Which of the following processes would she be observing

binary fission

What does not contribute to genetic uniqueness

binary fission

The process of mitosis is thought to have evolved from binary fission. What similarities exist between these processes

both processes include DNA segregation

Which of the following is a difference between binary fission and mitosis

breakdown of the nuclear envelope

Which of the following pairs of processes encompasses the entire cell cycle

cell division and interphase

The circle near the center of this structure represents a

centromere

Homologous chromosomes

consist of a maternal and paternal copy of each chromosome

Some daughter cells are described as clones, For this description to be appropriate, the daughter cells must

contain a set of DNA that is identical to that of the parent cell

In genetic engineering, molecular biologists often combine segments of DNA from two separate organisms. This is an example of genetic recombination that occurs in a laboratory setting. Which of the following is a form of genetic recombination that occurs naturally within cells

crossing over

During which phase of the cell cycle is the genetic material evenly partitioned between daughter cells

cytokinese

A scientist wishing to generate cancerous cells in vitro could subject the cells to which of the following procedures

expose cells to chemicals that disrupt mitosis

Which two processes work in conjunction to create genetic diversity and maintain chromosome number

fertilization and meiosis

Which of the following is NOT a factor that influences a cell's progression through the cell cycle

gametes

Cancers are groups of cells that divide rapidly and uncontrollably. Thus, cancer cells

have a relatively short G1 phase

The possible combinations of alleles in gametes BLANK due to independent assortment and crossing over

increases

A pool of cells is treated with a chemical that halts progress that halts through the cell cycle. In which stages of the cell cycle would most cells be found

interphase

Which of the following is associated with mitosis

maintenance of chromosome number

Model organisms (like mice) used in the study of genetic disease

may accurately reflect how disease like cancer occur in humans

Gametes are produced by meiosis rather than mitosis because

meiosis reduces the chromosome number so that zygotes produced will have one full genome

Chromosomes are lined up at the middle of the cell during what portion of cell division

metaphase

The goal of meiosis is to

produce eggs and sperm

Which of the following choices states a correct reason why the process of cell division is different for prokaryotic than for eukaryotic cells

prokaryotes have a circular DNA molecule

Which of the following is known to result from the disruption of mitosis and meiosis

prostate cancer

When appropriately prompted, diploid individuals of Ulva Prolifera form spores that germinate to become haploid individuals. How might diploid individuals be created to complete the life cycle

some individuals differentiate to become haploid gametes and then fuse to produce a diploid zygote

Which of the following cell types is produced by meiosis

sperm cells

When examining the rapidly dividing cells of a fish embryo, you notice a cell that seems to contain two nuclei. The middle of the cell is pinched inward. This cell must be in what stage of mitosis

telophase

Which of the following would promote a cell to move through the G2 checkpoint

the genetic information has been duplicated

Which of the following is true of the chromosomes in a homologous pair

they carry the same genes

The process shown in the figure could produce

two identical prokaryotic cells

The successful union of one make and one female gamete forms a new single cell known as a what

zygote


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