____ molecules pass through a cell membrane most easily by diffusion
a. ionic
b. large, polar
c. large, hydrophilic
d. small, hydrophobic
e. large, hydrophobic
D
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When the replication machinery encounters a single-strand break, the replication fork collapses resulting in a double-strand break. Which of the following would be the fourth step in repairing this damage?
A. The 3' single-strand overhang invades the intact portion of the chromosome, pairs with its complementary strand, and displaces the other. B. Once the strand invasion is complete, branched migration occurs. C. The broken ends are processed, with the 5' ending strand selectively degraded to create 3' overhangs. D. Branch migration creates Holliday intermediates that are resolved by the enzyme resolvase. E. Resolution of the Holliday intermediate is followed by ligation and replication is restarted.
DNA can be found in all of the following cellular locations EXCEPT the
A. mitochondria. B. chloroplast. C. nucleus. D. golgi apparatus. E. plant cell.
What cell type develops into plasma cells?
A) T cells B) macrophages C) helper T cells D) mast cells e) B cells
The ____ grows into the spinal cord while the ____ grows from it.
A. Dorsal Root; Ventral Root B. Dorsal Root; Dorsal Ramus C. Ventral Root; Dorsal Ramus D. Ventral Root; Dorsal Root E. Ventral Root; Ventral Ramus