Biologists will eventually shift from a super tree to a tree based on analyses of whole genomes
a. true
b. false
Answer: a. true
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In RNA editing:
A. spliceosomes change the base sequence of the primary transcript and therefore the protein for which it codes. B. different spliceosomes in different cells create different RNA sequences from the same primary transcript. C. enzymes change the base sequence of the primary transcript and therefore the protein for which it codes. D. different enzymes in different cells create different primary RNA transcripts from the same DNA sequence. E. a combination of spliceosomes and enzymes creates different primary RNA transcripts from the same DNA sequence.
The cell in micrograph "II" is at which stage of
the cell cycle?
a. prophase b. telophase c. interphase d. anaphase e. metaphase
Which of the following is not a characteristic of B cells?
A) They carry out cell-mediated immunity. B) They originate in bone marrow. C) They are responsible for the memory response of humoral immunity. D) They are responsible for antibody formation. E) They have antibodies on their surfaces.
The presence of trans fats in membranes ________ (increases or decreases) membrane fluidity and ________ (increases or decreases) the membrane transition temperature
Fill in the blank with correct word.