A reversible reaction is one where
A) there are large changes in the net free energy from substrate to product.
B) there is no change in the net free energy from substrate to product.
C) there are small changes in the net free energy from substrate to product.
D) a reaction between products is unlikely due to the high activation energy.
C) there are small changes in the net free energy from substrate to product.
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Glands within the lamina propria of the respiratory mucosa secrete
A) hormones. B) saliva. C) mucus. D) sweat. E) acids.
As a result of playing tennis in the summer heat without proper hydration, you have become very dehydrated. You are now in hypernatremia, a condition where your blood sodium levels are too high. Your brain tells you to drink water and, as a result, your blood sodium and hydration levels go back to normal. This illustrates
A) positive feedback. B) stimulus reinforcement. C) negative feedback. D) diagnostic regulation. E) both positive and negative feedback loops.
Which of the following molecules can move across the phospholipid bilayer by simple diffusion?
A) lipids B) steroids C) lipids and water D) water E) All of the answers are correct.
which muscle extends the elbow?
a) biceps brachii b) triceps brachii c) brachialis d) brachioradialis