The warming action on Earth's atmosphere is referred to as ____
a. respiration accumulation
b. the greenhouse effect
c. the smog problem
d. the blanket phenomenon
e. ozone depletion
ANSWER: b
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Conversion of excess amino acids into carbohydrate and fats during the absorptive state takes place in the
A. liver. B. brain. C. intestine. D. kidney. E. heart.
Which molecules are the most important for a cell to protect from damage if the cell is to stay alive and reproduce?
a. proteins b. lipids c. nucleic acids d. carbohydrates e. amino acids
Threatened species
A. are species likely to become endangered in the future. B. are found only in captivity. C. will be extinct within 100 years. D. are rare species that are exploited by humans. E. are currently in danger of extinction throughout all or most of their range.
Which process provides the energy needed for DNA replication?
a. the breaking of the hydrogen bonds between base pairs b. the DNA polymerase c. the unwinding of the DNA double helix d. the hydrolysis of pyrophosphate