Molecules that absorb light are called
A. absorbers.
B. enzymes.
C. pigments.
D. electron carriers.
E. photosynthesizers.
Answer: C
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Endoplasmic reticulum (ER) with many ribosomes attached is called ________ ER, whereas endoplasmic reticulum that is mostly devoid of ribosomes is called ________ ER.
Fill in the blank(s) with the appropriate word(s).
Behavioral trends in primate evolution include
a. longer life spans. b. a longer learning period and dependence on parents. c. a lower reproductive rate. d. longer periods between pregnancies. e. all of these.
Which statement about obesity is FALSE?
a. The number of fat cells in an adult is determined by the amount of fat stored during childhood. b. Genetics, not overeating, is responsible for obesity. c. Obesity can result from an increase in the size and/or number of fat cells. d. Many of the factors involved in obesity are inherited. e. To lose weight, energy intake must be less than energy output.
power plant of cells:
a. ribosomes b. ATP c. mitochondria