In the name Staphylococcus aureus, aureus is the
A) genus.
B) domain name.
C) species.
D) kingdom.
E) family name.
C
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Which ion channel is primarily responsible for the action potential?
A. the voltage-gated sodium channel B. the voltage-gated potassium channel C. the ligand-gated sodium channel D. the ligand-gated potassium channel E. the non-gated sodium channel
The DNA strands that will be together in the new
DNA molecules are a. A – D and B – C. b. A – B and C – D. c. A – C and B – D. d. A – D – B and A – D – C. e. A – B – C - D.
The refractory period of an action potential
A. has no effect on direction of action potential propagation. B. allows bidirectional flow of the action potential. C. prevents flow of action potential towards cell body. D. is not a component of every action potential.
Aminoglycosides
A) Are metabolic analogs of PABA and block folic acid synthesis. B) Block peptidases that cross-link glycan molecules. C) Interfere with elongation of peptidoglycan. D) Damage cell membranes. E) Attach to the 30S ribosomal subunit and disrupt protein synthesis.