bio review tests

bio review tests - Correct Most of an organism's DNA is...

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   Correct Most of an organism's DNA is carried by its _____. (8.1) Your Answer: chromosomes 2.     Correct Who put forth the important biological principle that all cells come from cells? (8.2) Your Answer: Virchow 3.     Correct The term "binary fission" is best applied to _____. (8.3) Your Answer: prokaryotes 4.     Correct Binary fission in bacterial cells involves ____________. (8.3) Your Answer: distribution of a copy of the single parental chromosome to each daughter cell 5.     Incorrect A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes. How many chromatids does it contain altogether? (8.4) Your Answer: 23 The Correct Answer: 92 6.     Correct It is difficult to observe individual chromosomes with a light microscope during interphase because _____. (8.4) Your Answer: they have uncoiled to form long, thin strands 7.     Incorrect Sister chromatids _____. (8.4) Your Answer: have matching copies of the chromosome's DNA The Correct Answer: all of the above 8.     Incorrect A cell entering the cell cycle with 32 chromosomes will produce two daughter cells, each with _____. (8.4) Your Answer: 16 chromosomes The Correct Answer: 32 chromosomes 9.     Incorrect Chromatids are _____. (8.4) Your Answer: held together by the centrioles The Correct Answer: identical copies of each other if they are part of the same chromosome 10.     Incorrect A cell biologist carefully measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G 2 phase of the cell cycle contained 200 units of DNA. What would be the amount of DNA in one of the grasshopper daughter cells? (8.5) Your Answer: 200 units The Correct Answer: 100 units 11.     Correct DNA replication occurs _____. (8.5) Your Answer: in the S phase of interphase 12.     Incorrect Chromatids form _____. (8.5) Your Answer: at the start of mitosis The Correct Answer: during the S phase 13.     Correct In some organisms such as certain fungi and algae, cells undergo mitosis repeatedly without subsequently undergoing cytokinesis. What would result from this? (8.5) Your Answer: large cells containing many nuclei 14.     Correct The function of the cell cycle is to produce daughter cells that _____. (8.5) Your Answer: are genetically identical to the parent cell (assuming no mutation has occurred)
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15.     Incorrect Cytokinesis refers to _____. (8.5) Your Answer: division of the entire cell The Correct Answer: division of the cell outside the nuclear material 16.     Correct In the telophase of mitosis, the mitotic spindle breaks down and the chromatin uncoils. This is essentially the opposite of what happens in _____. (8.6) Your Answer: prophase 17.     Correct At which point in the cell cycle do centrosomes begin to move apart to two poles of the cell in a dividing human liver cell? (8.6) Your Answer: prophase 18.     Correct The phase of mitosis during which the chromosomes move toward separate
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This note was uploaded on 04/07/2008 for the course BIO 100 taught by Professor Zhongma during the Spring '08 term at Truman State.

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bio review tests - Correct Most of an organism's DNA is...

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