In the presence of infection, white blood cells release endogenous chemicals called _________, which produce fever.
A) pyrogens
B) histamines
C) leukotrienes
D) catecholamines
Answer: A) pyrogens
Biology & Microbiology
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When ____ is incorporated into DNA or RNA during synthesis, it will create a(n) ____
a. carbon; base analog b. oxygen; base analog c. 5-bromouracil; nucleotide substitution mutation d. 5-bromouracil; frameshift mutation e. oxygen; nucleotide substitution mutation
Biology & Microbiology
Where is the histone tail located?
a. at the GPI anchor b. at the C-terminus c. at the N-terminus d. between peptides
Biology & Microbiology
Red blood cells are biconcave. Their shape is determined by interior proteins anchored to the membrane termed
A. phospholipids. B. clathrins. C. actin filaments. D. cytoskeleton. E. spectrins.
Biology & Microbiology
Which of the following are cellular digestion centers?
What will be an ideal response?
Biology & Microbiology