Which muscle contraction is involuntary?

A. Cardiac and smooth
B. Skeletal only
C. Cardiac, smooth, and skeletal
D. Smooth only
E. Cardiac only


Answer: A

Biology & Microbiology

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Based on the above information, in the early mornings when the bumblebee heats its body via

metabolic processes, it would be considered a(n) __________ and thus will have __________ oxygen demands.

a. ectotherm; higher b. endotherm; higher c. ectotherm; lower d. endotherm; lower

Biology & Microbiology

How do Na+ ions enter a neuron when an action potential is initiated

a) a voltage-gated Na+ facilitated transporter b) a voltage-gated Na+ channel c) the Na+/K+aATPase d) a gated Na+ pump e) the ligand-gated Na+ channel

Biology & Microbiology

For bacteria to continue growing rapidly when they shift from an aerobic environment to an anaerobic environment, they must

A) produce more ATP per molecule of glucose during glycolysis. B) increase the rate of glycolysis. C) increase the rate of glucose production. D) produce ATP using NADH. E) increase the rate of the Krebs cycle.

Biology & Microbiology

________ can be detected through a blood test that detects a specific antigen called PSA

Fill in the blank(s) with correct word

Biology & Microbiology