Which of the following choices is not a sac fungus?
a. truffles
b. baking yeast
c. puffballs
d. morels
c
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Your liver produces 90% of the cholesterol found in your body. When cholesterol levels get too high, the first enzyme in the pathway of cholesterol synthesis is inhibited. This is an example of:
A. Denaturation B. Equilibrium C. Feedback inhibition D. A coenzyme E. Positive feedback
Which of the following statements accurately describes ALL viruses:
A. Virus particles are metabolically inactive. B. All viral genomes are DNA. C. Virus growth is exponential. D. Viruses use their own ribosomes for protein synthesis. E. Viruses like other microbes divide by binary fission
You spray your lawn with a pesticide. The concentration of the pesticide in the tissues of the grass on your lawn is 10?6 parts per million (ppm). Grasshoppers eat the grass and are in turn eaten by rats, which are then eaten by owls. At each
successive trophic level, the concentration of pesticides increases. The term for this process is A) extirpation. B) biological magnification. C) habitat loss. D) climate change.
Essential fatty acids that cause a decrease in blood clotting are
a. omega-3. b. omega-6. c. omega-9. d. prostacyclins.