An important type of metabolic chemical that is not used up in the reactions it causes is:
a. hormones.
b. enzymes.
c. coenzymes.
d. neurotransmitters.
B
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Because they do not have mitochondria, red blood cells generate a lot of lactate from glycolysis, which they in turn must convert into glucose to meet their energy needs
Indicate whether the statement is true or false
Which of the following is NOT a primary cause of congestive heart failure?
a. Hypertension b. Ischemic heart disease c. Diabetes mellitus d. Valvular disease
The main product of alcohol metabolism is _____
a. VLDL b. acetaldehyde c. bilirubin d. ethanol e. acetate
Which of the following statements is false about fat-soluble vitamins?
A) Vitamin D can be synthesized from cholesterol, starting in the skin. B) Beta-carotene can be converted to active vitamin A inside the body. C) Vitamin E is widely distributed in plant and animal foods. D) Vitamin K deficiency causes hemorrhaging. E) There are many chemical forms of vitamins A, E, and K.