Animal cells perform functions using energy that is derived from glucose(C6H12O6) Which molecule is required for animal cells to obtain the most energy possible from a molecule of glucose?
A water
B oxygen
C lactic acid
D carbon dioxide
Ans: B oxygen
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Why might rare species of plants be particularly valuable for discovering new medical treatments?
A. They are less likely to have been well-studied already. B. Plants with high levels of secondary metabolites are less likely to have large, successful populations. C. Only plants having trouble competing would waste energy on producing bioactive compounds. D. Rare plants are not valuable for medical treatments, but it is an effective way to get people to preserve biodiversity.
Why are trans fats more harmful for consumption than saturated fats?
a. Trans fats increase LDL cholesterol levels more than saturated fats. b. Trans fats decrease HDL cholesterol levels more than saturated fats. c. Saturated fats prevent LDL transport more than trans fats. d. Trans fats are often consumed with other food additives that increase fat absorption in the gut. e. Saturated fats are more natural, and better digested in the gut.
Energy is defined as
A. change. B. the capacity to do work. C. heat. D. movement.
What type of organisms could spoil macaroni and cheese stored in a closed container in the refrigerator, but are unlikely to infect humans?
A. Thermophiles B. Mesophiles C. Psychrophiles D. Psychrotolerant