Biology Test 1 2011 - Question 1 Your answer is INCORRECT....

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Question 1 Your answer is INCORRECT. The data above shows the total amount of cellular DNA present during different phases of the cell cycle; data from two successive cycles is shown. According to the data in the figure above, two cells are produced at the end of which number? A) I B) II C) III D) IV E) V Question 2 Your answer is INCORRECT. During which phases of mitosis are chromosomes composed of two fully formed chromatids? A) from G1 of interphase through the end of anaphase B) from G1 of interphase through the end of metaphase C) from metaphase through the end of telophase D) from anaphase through the end of telophase E) from end of S phase of interphase through the end of metaphase Question 3 Your answer is CORRECT.
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The unlettered circle at the top of the figure shows a diploid nucleus with four chromosomes. There are two pairs of homologous chromosomes, one long and the other short. One set is symbolized as black and the other set is gray. Choose the correct chromosomal condition among A - E that would correspond to one of the nuclei of this cell if it was in telophase: A) A B) B C) C D) D E) E Question 4 Your answer is INCORRECT. During mitosis, kinetochore proteins, centrosomes containing centrioles, and microtubules are required for all of the following, except : A) the formation of the mitotic spindle B) separation of chromatids C) chromosome replication D) alignment of chromosomes E) There are no exceptions; A-D all require these components. Question 5 Your answer is CORRECT. What is a chromatid? A) a chromosome in G1 of the cell cycle
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B) a replicate chromosome C) a chromosome found outside the nucleus D) a special region that holds two centromeres together E) another name for the chromosomes found in genetics Question 6 Your answer is CORRECT. If there are 20 chromatids in a cell at metaphase, how many chromosomes are there in each daughter cell following cytokinesis? A) 10 B) 20 C) 30 D) 40 E) 80 Question 7 Your answer is CORRECT. The replication of the genetic material, segregation of the genetic material, and partitioning of the cytoplasm occurs in eukaryotic cells and prokaryotic cells; however the process by which this is carried out is quite different in each cell type. A) True B) False Question 8 Your answer is CORRECT. Which of the following correctly describe(s) cyclin-dependent kinase (Cdk)? A) Cdk is inactive, or "turned off," in the absence of cyclin. B) Cyclin levels fluctuate depending on the presence of external signals such as growth factors. C) Activated Cdk attaches phosphate groups to other proteins. D) A, B, and C are true. E) Both B and C are true. Question 9 Your answer is INCORRECT. Microscopic observation of a plant tissue reveals numerous cells in different phases of mitosis, very few cells are observed to be in interphase. From this data, one can conclude that this tissue is not actively growing. A)
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This note was uploaded on 03/06/2011 for the course BIOLOGY 1362 taught by Professor Knapp during the Spring '11 term at University of Houston.

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Biology Test 1 2011 - Question 1 Your answer is INCORRECT....

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