Which statement about enzymes is FALSE?
A) Most enzymes can catalyze millions of reactions per minute.
B) Enzymes may be damaged by high temperature.
C) Enzymes may use coenzymes derived from vitamins or cofactors from metallic elements.
D) Enzymes require contact with substrate in order to assume their active form.
D
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Antigen-presenting cells usually display processed antigens to T cells in the ________
A) thymus B) liver C) blood plasma D) red bone marrow E) lymph nodes
Which is defined as the amount of air that remains in the lungs after a maximum exhalation?
A) minimal volume B) inspiratory reserve volume C) vital capacity D) expiratory reserve volume E) residual volume
A neuromuscular junction is where a ________ and a ________ come together.
A. neuron; myofibril B. muscle fiber; neuron C. T tubule; sarcoplasmic reticulum D. neuron; neuron