Microorganisms that live in severe habitats, such as very hot, acidic, or salty environments, are called ________.
A. halophiles
B. thermophiles
C. extremophiles
D. barophiles
E. psychrophiles
Answer: C
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The nitrogen in our atmosphere is only usable to us after it is converted to
A. ammonia. B. amino acids. C. fertilizer. D. nitrous oxide.
rRNA differs from other types of RNA in what
way or ways?
a. it acts as an enzyme. b. it carries amino acids. c. it is complexed with a protein. d. it carries the complete instructions for making a protein. e. it is different in more than one of these ways.
The total variation in a trait is known as the ________
A) phenotypic variation B) genetic variation C) environmental variation D) broad-sense heritability E) narrow-sense heritability
What evidence supports the idea that members of the plant kingdom evolved from ancestral green algae?
What will be an ideal response?