Independent assortment of homologous chromosomes occurs at
A. anaphase I.
B. anaphase II.
C. metaphase I.
D. interphase.
E. prophase I.
Answer: C
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Which class is made up of members commonly called chitons?
a. Cephalopoda b. Scaphopoda c. Polyplacophora d. Gastropoda
Each of the following statements concerning peptidoglycan is correct EXCEPT:
A. It has a backbone composed of alternating units of N-acetylmuramic acid and Nacetylglucoseamine B. It Cross-links between the tetrapeptides involve D-alanine C. It can be degraded by lysozyme D. It is thinner in gram-positive than in Gram-negative bacteria
Polymers are ______
broken down by hydrolysis macromolecules made by a dehydration process all of the above
There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells?
A. lysosome B. mitochondrion C. nucleus D. ribosome