The major function of adhesion proteins such as fibronectin is to
a. link epithelial cell layers.
b. link collagen, proteoglycans, and cells containing integrins.
c. seal cell layers at tight junctions.
d. support communication between adjacent cells.
Ans: b. link collagen, proteoglycans, and cells containing integrins.
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All of the terms listed below occur during interphase except
a. G1 phase. b. cytokinesis. c. chromosome replication. d. G2 phase. e. S phase.
A. What type of enzyme is used to cleave DNA?B. What type of "ends" are produced?C. How do the "ends" function in cloning DNA?
What will be an ideal response?
Humans incorporate nitrogen into their bodies ____
a. by nitrification b. through ammonification c. by assimilation and biosynthesis d. via denitrification e. by the process of decomposition
The "backbone" of a nucleic acid molecule is made of
A) lipids. B) NAD+ and FAD. C) amino acids. D) ATP molecules. E) sugar and phosphate groups.