Biology test 2 Pearson Mastering Biology Ch. 8,9,10,12 Questions and Answers 100% Pass

Biology test 2 Pearson Mastering Biology Ch. 8,9,10,12 Questions and Answers 100% Pass A biochemist measures the amount of DNA in cells growing in the laboratory. The quantity of DNA in a cell would be found to double_________. - Correct Answer️️ - Between the G1 and G2 phases of the cell cycle A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes. How many chromatids does it contain altogether? - Correct Answer️️ -92 It is difficult to observe individual chromosomes with a light microscope during interphase because________. - Correct Answer️️ -They have uncoiled to form long, thin strands A cell entering the cell cycle with 32 chromosomes will produce two daughter cells, each with _____________. - Correct Answer️️ -32 chromosomes In some organisms, such as certain fungi and algae, cells undergo the cell cycle repeatedly without subsequently undergoing cytokinesis. What would result from this? - Correct Answer️️ -Large cells containing many nuclei The function of the cell cycle is to produce daughter cells that __________. - Correct Answer️️ -are genetically identical to the parent cell (assuming no mutation has occurred) In the telophase of mitosis, the mitotic spindle breaks down and the chromatins uncoils. This is essentially the opposite of what happens in ___________> - Correct Answer️️ - ProphaseSMART PDF You would recognize a dividing cell as a plant cell and not an animal cell if you saw that it had __________. - Correct Answer️️ -Formed a cell plate Cytochalasin B is a chemical that disrupts microfilament formation. This chemical would interfere with ________. - Correct Answer️️ -Cleavage What is the difference between a benign tumor and a malignant tumor? - Correct Answer️️ -Benign tumors do not metastasize; malignant tumors do. In humans, the _______ determines the sex of the offspring because ______________. - Correct Answer️️ -male... the male can contribute either an X or a Y chromosome, whereas the female can contribute on an X What is the normal result of a diploid cell undergoing meiosis? - Correct Answer️️ - Four haploid cells Mitosis and cytokinesis result in the formation of ___________; meiosis and cytokinesis result in the formation of _____________. - Correct Answer️️ -two diploids cells... Four haploid cells If the diploid member of chromosomes in a certain animal is 6 (2n=6), there are three sets of two homologous chromosomes each, or three Pais. How do these three pairs align and separate in meiosis? - Correct Answer️️ -They align and assort independently to form any of eight different combinations. The major contribution of sex to evolution has been_______> - Correct Answer️️ -to provide a method permitting the inheritance of somatic mutationsSMART PDF Prior to some recent studies, such as with bdelloid rotifers, scientists thought that organisms that reproduced solely by asexual reproduction were __________. - Correct Answer️️ -dead ends Which one of the following occurs in meiosis, but not in mitosis? - Correct Answer️️ - pairing of homologous chromosomes Both asexual and sexual reproduction rely on ___________. - Correct Answer️️ -cell division Which of the following statements describes a major difference between meiosis II and mitosis in a diploid animals? - Correct Answer️️ -Meiosis II occurs in