The time from when pathogen first enters the body and begins to multiply, until symptoms first appear is the
A. incubation period.
B. convalescent stage.
C. prodromal stage.
D. period of invasion.
E. All of these choices are correct.
Answer: A
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The process of meiosis produces ____________________
a. four cells that have unique allele combinations b. two cells that are genetically identical c. four cells with an unequal number of chromosomes d. two cells that then undergo fertilization
Which statement is true?
a. Translation cannot proceed until eIF-2 is phosphorylated. b. eIF4F bonds to the 40S ribosome after GTP is hydrolyzed. c. Phosphorylation of a protein can alter RNA stability. d. GTP bonds to the 5’ cap of the mRNA during translation.
This diagram illustrates the action of a proteasome on protein marked with ubiquitin tags. What statement about this process is true?
a. Degradation of proteins results in the destruction of the proteasome.
b. Degradation of proteins in proteasomes produces a net output of energy.
c. Degradation of proteins in proteasomes requires a net input of energy.
d. Proteasomes absorb all non-amino acid components of proteins.
Which would create a more acute dietary shortage for human beings: the loss of monocot crops or the loss of dicot
crops? What will be an ideal response?