Multiple ChoiceCells spend the majority of their time in which one of the following phases of the cell cycle?2395views15rank
Multiple ChoiceWhich pair includes a phase of the cell cycle and a cellular process that occurs during that phase?3634views11rank
Multiple ChoiceWhat is the name of the microtubule-organizing center found in animal cells as an identifiable structure present during all phases of the cell cycle?2792views19rank
Multiple ChoiceA biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in the cells doubled __________. 1698views3rank
Multiple ChoiceA cell biologist carefully measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G2 phase of the cell cycle contained 200 units of DNA. What would be the amount of DNA at G1 of the cell cycle in one of the grasshopper daughter cells? 1442views
Multiple ChoiceDuring interphase, the genetic material of a typical eukaryotic cell is __________. 1416views
Multiple ChoiceIf a human somatic cell is just about to divide, it has __________ chromatids. 1126views
Multiple ChoiceHow many maternal chromosomes are present in a somatic human cell when it is not engaged in cell division? 938views
Textbook QuestionAfter S phase, what makes up a single chromosome? a. two daughter chromosomes b. a double-stranded DNA molecule c. two single-stranded DNA molecules d. two sister chromatids1271views
Textbook QuestionIt is difficult to observe individual chromosomes during interphase because a. the DNA has not been replicated yet. b. they are in the form of long, thin strands. c. they leave the nucleus and are dispersed to other parts of the cell. d. homologous chromosomes do not pair up until division starts.1083views
Textbook QuestionWhich of the following occurs during S phase? (A) condensation of the chromosomes (B) replication of the DNA (C) separation of sister chromatids (D) spindle formation1601views
Textbook QuestionCell A has half as much DNA as cells B, C, and D in a mitotically active tissue. Cell A is most likely in a. G1. b. G2. c. prophase. d. metaphase.1802views
Textbook QuestionA biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in a cell doubled a. between prophase and anaphase of mitosis. b. between the G1 and G2 phases of the cell cycle. c. during the M phase of the cell cycle. d. between prophase I and prophase II of meiosis.751views
Textbook QuestionA particular cell type spends 4 hours in G1 phase, 2 hours in S phase, 2 hours in G2 phase, and 30 minutes in M phase. If a pulse–chase experiment were performed with radioactive thymidine on an asynchronous culture of such cells, what percentage of mitotic cells would be radiolabeled 9 hours after the pulse? a. 0 percent b. 50 percent c. 75 percent d. 100 percent802views
Textbook QuestionIf a cell at G1 contains four picograms of DNA, how many picograms of DNA will it contain at the end of the S phase of the cell cycle? a. 0; b. 2; c. 4; d. 82942views
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