Based on the function of mitochondria, what substance is able to pass through the outer membrane of the mitochondria easily?
A. Oxygen
B. Sugars
C. Amino acids
D. Potassium ions
A
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Molecules that absorb light are called
A. enzymes. B. electron carriers. C. pigments. D. photosynthesizers. E. absorbers.
The probability of a couple having either a boy or a girl is ½. However, many families have more boys than girls and VICE VERSA. Why is the observed ratio of boys to girls in typical families different than the predicted ratio?
A. There is a large random sampling error due to the small size of families. B. There is a small random sampling error due to the small size of families. C. Humans are more heterozygous than is predicted by random sampling. D. The sex of each child is determined independently. E. Two of the answers are correct. There is a large random sampling error due to the small size of human families and the sex of each child is determined independently.
An insect-pollinated plant would be likely to have
A. small flowers and no odor. B. large flowers and no odor. C. small flowers and a fragrant odor. D. showy petals and fragrant odor.
__________ are asymmetrical and do not have tissues or organs.
Fill in the blank(s) with the appropriate word(s).