Which of the following protein-functional categories is mismatched?
A. hexokinase-metabolic enzyme
B. tubulin-structural protein
C. insulin-motor protein
D. hemoglobin-transport protein
E. antibodies-protective protein
C. insulin-motor protein
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Sticky ends are so named because ____
a. they are single stranded and will base pair with complementary sequences b. covalent bonds spontaneously form between them to form a continuous DNA molecule c. primers hybridize to them during the first step of PCR d. they hybridize to a DNA sequence of interest e. they stick to invading viral DNA
Which organism would be classified as a chemoautotroph?
a. cactus b. lichen c. oak tree d. green algae e. nitrogen-fixing bacteria
Delayed hypersensitivity is ____ mediated.
A. humoral B. antibody C. cell
Bacteria in the phylum Firmicutes are distinguished from the phylum Actinobacteria on the basis of
A) their Gram stain reaction. B) the high G + C content of their DNA. C) their spiral shapes. D) the low G + C content of their DNA. E) the presence of LPS in their membranes.