The anterior pituitary gland receives hormone messages from the hypothalamus via ________.
a. a capillary network
b. neurons that extend from the hypothalamus to the pituitary
c. Schwann cells
d. both a & b
Answer: a. a capillary network
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The antibiotics streptomycin and erythromycin function by inhibiting the function of ____ in
prokaryotes but not eukaryotes.
a. RNA polymerases b. aminoacyl-tRNA synthetases c. spliceosomes d. DNA polymerases e. ribosomes
Which of the following statements accurately reflects the differences between Batesian mimicry and Müllerian mimicry?
A. In Batesian mimicry the model must behave differently than the mimic; in Müllerian mimicry they behave the same. B. In Batesian mimicry the model must be more dangerous than the mimic; in Müllerian mimicry they are both dangerous. C. Batesian mimicry does not differ from Müllerian mimicry. Two different scientists discovered these two types at the same time, and they disagreed on what to call it. D. Batesian mimicry differs from Müllerian mimicry in that they occur on different continents—Batesian on the North American and Müllerian on the European. E. Batesian mimicry involves invertebrates; Müllerian mimicry involves vertebrates.
An F1 plant with the genotype DdGg is mated to a ddgg plant. The resulting seeds are planted and the following phenotypes produced in these numbers:
DG 47 Dg 396 dG 412 dg 55 a. What were the genotypes of the parental strains that produced the F1? b. What is the distance between the genes?
What would happen if the sensory neurons in your hand could not transmit a signal?
A) You could feel something touch your fingers but you could not move them. B) You could move your fingers but you could not feel something touch them. C) You could not move your fingers or feel something touching them. D) You could still feel something touching your fingers and still be able to move them.