Antibodies are
A. specific molecules, or parts of molecules, that the body recognizes as foreign.
B. enzymes secreted to destroy a pathogen's cell wall.
C. proteins on the surface of our cells to which pathogens attach.
D. cells that protect the body against invaders.
E. proteins the body produces against invading substances.
Ans: E. proteins the body produces against invading substances.
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________ molecules deliver amino acids to ribosomes during translation.
A. Ribosomal RNA (rRNA) B. Transfer RNA (tRNA) C. Messenger RNA (mRNA) D. Heterogeneous nuclear RNA (hnRNA)
All of the following are true about migration EXCEPT:
a. It is a seasonal activity. b. Animals move between habitats. c. The costs associated with the activity outweigh the benefits of moving. d. Movement occurs due to changes in the habitat
In the cell cycle, DNA is replicated during the G2 phase
__________________ Indicate whether the statement is true or false.
Diseases that are induced by modern medical procedures are referred to as ________ infections
A) iatrogenic B) exogenous C) opportunistic D) endogenous E) subacute