BIOL 1201 : Quiz And Pretest Questions For Biology

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azuremammoth471

15 Mar 2019

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Nucleoli are present during _____. prometaphase anaphase prophase metaphase interphase telophase anaphase metaphase interphase prometaphase prometaphase anaphase prophase interphase metaphase. During prophase, the chromatin fibers become discrete chromosomes. Centromeres divide and sister chromatids become full-fledged chromosomes during _____. During anaphase, sister chromatids separate and daughter chromosomes migrate to opposite poles. Attachment of spindle fibers to kinetochores is one of the events of prometaphase. During anaphase centromeres come apart, and sister chromatids become full-fledged chromosomes, which migrate to opposite poles of the cell. Cytokinesis in animal cells involves the formation of a cleavage furrow. anaphase metaphase prometaphase interphase telophase telophase metaphase interphase prometaphase anaphase the mitotic phase. Events of prophase include the condensation of chromatin and the dispersal of nucleoli. During metaphase chromosomes align along the metaphase plate. The events of prometaphase include the attachment of spindle fibers to kinetochores. Cytokinesis in plant cells involves the formation of a cell plate. During telophase both nuclear envelopes and nucleoli re-form.

Related Questions

Question 10

A microscope image of a cell in interphase is treated with dyes to stain the nucleic acids (DNA and RNA). This image probably displays ______.

		visible nucleoli
		separate visible chromosomes
		visible spindle fibers

1 points

Question 11

To observe plant cells undergoing mitosis, the best plant tissue to isolate would be ______.

		a section of the root tip
		a section of the mature fruit
		a section of the main stem

1 points

Question 12

Owen observes a slide containing whitefish blastula sections. He finds a cell with visible spindle lines extending from two points on opposite sides of the cell and chromosomes as small black Xs halfway between the two poles. What stage of the cell cycle is Owen observing?

		anaphase
		metaphase
		prometaphase

1 points

Question 13

What structural feature can you use to distinguish between DNA-stained onion cells in anaphase and telophase?

		Sister chromatids separate as anaphase ends and telophase begins.
		The vesicles forming a cell plate appear around the onset of telophase.
		The chromosomes are clustered at visible spindle poles during anaphase.

1 points

Question 14

A carcinogen is any substance or environmental condition that ______.

		increases the frequency of mutation
		causes direct damage to DNA
		inhibits mitosis in cancer cells

1 points

Question 15

Angelina observes a slide containing whitefish blastula sections. She finds a cell with visible spindle lines extending from two points on opposite sides of the cell and chromosomes as small black Xs halfway between the two poles. What intracellular structure forms each of the two points on opposite sides of this cell?

		a metaphase plate
		a cell plate
		a pair of centrioles

1 points

Question 16

Which of the following best describes the relationship between interphase and the cell cycle?

		Interphase is a gap between rounds of cell division.
		Interphase comprises a large majority of the cell cycle in almost all cells.
		Interphase comprises a large majority of the cell cycle in slowly and non-dividing cells.

Question 17

Radiation therapy and chemotherapy are cancer treatments that primarily attack cancer cells through ______.

		activating apoptosis in any rapidly dividing cells to kill off tumor cells
		destroying the blood vessels in cancerous tumors to block the flow of nutrients
		damaging DNA to the extent that cells die if they cannot repair the damage

yellowcat500

Lab 11 Mitosis

Interphase - Chromosomes are not visible because they areuncoiled

Prophase- The chromosomes coil. The nuclear membranedisintegrates. Spindle fibers (microtubles) form. The drawing showsa cell with 8 chromosomes. Each chromosome has 2 chromatids for atotal of 16 chromatids.

Prometaphase

Metaphase - The chromosomes become aligned. The drawing shows acell with 8 chromosomes. Each chromosome has 2 chromatids for atotal of 16 chromatids.

Anaphase- The chromatids separate; the number of chromosomesdoubles. The drawing shows a cell with 16 chromosomes. Eachchromosome has 1 chromatid for a total of 16chromatids

Telophase- The cell divides into two. The chromosomes uncoil.The nucleus reforms. The spindle apparataus disassembles. Thedrawing shows a cell with 16 chromosomes. Each chromosome has 1chromatid for a total of 16 chromatids.

Ques(ons

1. What stage were most of the onion root p cells in? Does thismake sense?

2. As a cell grows, what happens to its surface area : volumerao? (Think of a balloon being blown up). How is this changing raonrelated to cell division?

3. What is the function of mitosis in a cell that is about todivide?

4. How accurate were your met predictions for each stage of thecell cycle?

5. Discuss one observation that you found interesting whilelooking at the onion root p cells.

6. What would happen if mitosis were uncontrolled?

for escience lab 11 bio 113

burgundyspider301

Lab 11 Mitosis

Interphase - Chromosomes are not visible because they areuncoiled

Prometaphase

Metaphase - The chromosomes become aligned. The drawing shows acell with 8 chromosomes. Each chromosome has 2 chromatids for atotal of 16 chromatids.

Anaphase- The chromatids separate; the number of chromosomesdoubles. The drawing shows a cell with 16 chromosomes. Eachchromosome has 1 chromatid for a total of 16chromatids

Ques(ons

1. What stage were most of the onion root p cells in? Does thismake sense?

2. As a cell grows, what happens to its surface area : volumerao? (Think of a balloon being blown up). How is this changing raonrelated to cell division?

3. What is the function of mitosis in a cell that is about todivide?

4. How accurate were your met predictions for each stage of thecell cycle?

5. Discuss one observation that you found interesting whilelooking at the onion root p cells.

6. What would happen if mitosis were uncontrolled?

for escience lab 11 bio 113

coffeeporpoise248

BIOL 1201 : Quiz And Pretest Questions For Biology

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