Nutritional mutations can be described as ________
A) those mutations that change the composition of the medium
B) those mutations that do not allow a bacterium or fungus to grow on minimal medium but do allow growth on complete medium
C) all strains that are not auxotrophic
D) those mutations belonging to the group called prototrophs
E) those mutations caused by site-specific mutagenesis
B
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How are hormones produced by endocrine glands typically transported to target cells?
a. in the blood b. through the air c. across a synapse d. via direct contact e. in interstitial fluid
In this generalized illustration of gametogenesis, the
four cells in the right column should be labeled a. sperm. b. eggs. c. ovum and three polar bodies. d. secondary spermatocytes. e. diploid.
Lichens reproduce sexually via soredia
____________________ Indicate whether the statement is true or false.
Which of the following stimuli do vertebrates not have a specialized receptor for?
A. Smell B. Humidity C. Vision D. Hearing E. Taste