Write 13 Conceptual Multiple Choice Questions and Included Your Answer Key for T
ID: 220434 • Letter: W
Question
Write 13 Conceptual Multiple Choice Questions and Included Your Answer Key for Two Pictures Below NarQ (sensor kinase Nitrate or nitrite Transporters Cell division and epidermal growth factor ATP Phosphate ADP EGF molecules NarL (response MRNA ulator) Chromosomal DNA (bacterial receptoe subunit Newly made proteins involved with cell division Relay Metabolic I 2 Nitrate or nitrite binds to NarQ, which uses ATP and phosphorylates itself and then transfers the phosphate to NarL The phosphorylated form of NarL activates many genes that encode proteins involved with nitrate and nitrite uptake and metabolism Protein kinase cascade MAP (mitogen-activated protein) kinasesExplanation / Answer
1. The DNA content is doubled in which of the following stages?
a) G1 b) G2 c) S phase d) metaphase [answer: c]
2. The number of chromonemata in each chromosome during synapsis is:
a) 2 b) 4 c) 8 d) many [answer: a]
3. Synapsis is a characteristic of:
a) Leptotene b) Zygotene c) Diplotene d) Pachytene [answer: b]
4. Crossing over during meiosis occurs in:
a) Diakinesis b) Leptotene c) Diplotene d) Pachytene [answer: c]
5. If the DNA is damaged then at which cell cycle checkpoint is the cell cycle halted?
a) G1-S b) S-G2 c) G2-M d) G0-G1 [answer: a]
6. Which molecule provides the stimulation of a cell to enter the cell cycle?
a) Cdk b) Tyrosine kinases c) Cyclins d) Cytokines and growth factors [answer: d]
7. In MAP kinases pathway, the Ras is activated by?
a) Protein kinase C b) Protein kinase B c) Protein kinase A d) GTPase activating protein [answer: d]
8. BCL2 is an oncogene and functions in:
a) preventing DNA repair b) intrinsic apoptotic pathway preventing cell death c) promoting mitogen signaling d) none of these [answer:b]
9. Which of the following leads to the association of a protein with proteasome?
a) acetylation b) methylation c) ubiquitination d) all of these [answer:c]
10. Which of the following would inhibit the onset of mitosis?
a)phosphorylation of Wee1 by Cdk b) binding of M cyclin to Cdk c) phosphorylation of Cdk by Wee1 d) None of these [answer: c]
11. To produce 128 cells from a single cell how many numbers of the mitotic division is required?
a) 7 b) 8 c) 16 d) 32 [answer: a]
12. A cell divides in every one minute. If kept in a beaker of 100 ml it can fill in one hour, so how much time will it take to fill 50 ml beaker?
a) 30 mins b) 60 mins c) 59mins d) one hour [answer: c]
13. Sometimes there is a failure in the separation of sister chromatids during cell division, this event is called as:
a) Non disjunctional b) fusion c) coincidence d) interference [answer: a]
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