For a cell to take up sugar from the bloodstream,
a. sugars must bind to receptors on cells of the
pancreas.
b. a person must have had a meal with sugar within
the last twenty-four hours.
c. homeostatic mechanisms must activate the
blood-brain barrier.
d. glycogen must be broken down to provide a
supply of glucose.
e. the pancreas must supply the appropriate
enzymes to make sugar available.
Answer: a
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The green alga Botryococcus braunii is a candidate for production of biofuel due to its ability to produce
A) and withstand large amounts of alcohols. B) hydrogen gas. C) long-chain (C30â€"C36) hydrocarbons. D) short-chain (C8â€"C14) hydrocarbons.
A fruit is a mature:
A. ovary. B. ovule. C. stigma. D. stem. E. pollen grain.
What do we call populations of organisms that are usually near the carrying capacity?
A. K-selected B. r-selected C. predators D. parasites E. perennials
What is the best way to protect the population against Haemophilus influenza type b infections?
A) Since the chances of complications are rare, no treatment is required. B) antibiotic treatment after onset of symptoms C) antitoxin treatment when exposure has occurred D) use of the Hib vaccine in young children E) IV fluids are commonly prescribed due to loss of fluids.