Scientists have found that humans and yeasts
a. have similar genes for the assembly of certain proteins
b. share all aspects of cellular structure
c. have nothing in common
d. cannot be evaluated for degree of relatedness
Ans: a. have similar genes for the assembly of certain proteins
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a. chemical substances. b. pressure changes. c. vibrational changes. d. light wavelengths. e. changes in solute concentration.
What is the term when one species benefits from an indirect interaction and the other has a neutral effect?
A) indirect competition B) indirect mutualism C) mutualism D) indirect commensalism
What is the purpose of the fragrant oils found in rosemary and thyme?
A) They encourage humans to pick them and spread their seeds. B) They protect the plants from fire. C) They help fuel fires, to which they've become adapted. D) They discourage humans from consuming the plants.
Binding of a signaling molecule to which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?
A) receptor tyrosine kinase B) G protein-coupled receptor C) ligand-gated ion channel D) intracellular receptor