During anaerobic respiration, what is the net amount of ATP produced?
A) 4 ATP
B) 6 ATP
C) 20 ATP
D) 2 ATP
Answer: D) 2 ATP
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A postsynaptic neuron has three presynaptic inputs-from neurons X, Y, and Z. Stimulation of neuron X causes the postsynaptic neuron to depolarize by 0.5 mV. When X and Y are stimulated simultaneously, the postsynaptic neuron depolarizes by 1 mV. When X and Z are stimulated simultaneously, however, there is no change in the membrane potential of the postsynaptic neuron. What is most likely true about presynaptic neurons Y and Z?
A. Z is excitatory and Y is inhibitory. B. They are both inhibitory. C. They are both excitatory. D. Y is excitatory and Z is inhibitory.
The rate at which energy is expended by the body during both external and internal work is known as the:
a. heart rate b. respiratory rate c. digestive rate d. thermodynamic rate e. metabolic rate
If someone were to decrease their food intake and increase aerobic exercise, they might lose adipose tissue and condition their muscles. These changes would also influence their blood vessels, as there would be
A. angiogenesis in both adipose tissue and skeletal muscle. B. changes in the diameter of blood vessels, but no angiogenesis nor regression. C. regression of blood vessels in both adipose tissue and skeletal muscle. D. regression of blood vessels in adipose tissue and angiogenesis in skeletal muscle. E. angiogenesis in adipose tissue and regression of blood vessels in skeletal muscle.
Because a chemical we will smell needs to diffuse into the fluid surrounding the olfactory receptors, which of the following substances would not be able to be detected?
A. Sugars B. Amino acids C. Proteins D. Lipids