By the end of oogenesis, how many eggs are ready for fertilization?
a. 4
b. 3
c. 1
d. 2
c. 1
Biology & Microbiology
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To infect a cell, HIV must
A. bind both CD4 and a cytokine co-receptor. B. bind both CD8 and a cytokine co-receptor. C. bind both CD8 and a class I MHC protein. D. kill cytotoxic T cells and bind CD4.
Biology & Microbiology
Based on this diagram, which organisms evolved more recently?
a. humans and pigs b. moths c. tuna d. yeast
Biology & Microbiology
In the accompanying diagram, ____ is responsible for storing bile
a. F b. G c. H d. I e. J
Biology & Microbiology
Amino acids are linked by what kind of bonds to
form the primary structure of a protein? a. disulfide b. hydrogen c. ionic d. peptide e. none of these
Biology & Microbiology