The membranes of cells are composed primarily of
A. oils.
B. phospholipids.
C. steroids.
D. triglycerides.
E. fats.
Answer: B
Biology & Microbiology
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Bacterial and archaeal ribosomes are known as ________ ribosomes, based on their sedimentation coefficient.
A. 70S B. 80S C. 50S D. 30S
Biology & Microbiology
Gene expression requires the participation of the
following three types of RNA: __________, __________and __________. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which of the following substances could be a cofactor?
A) a protein B) a polypeptide C) a zinc atom D) a ribosome
Biology & Microbiology
Which of the following protein classes are not found as membrane proteins?
A. receptors B. enzymes C. hormones D. transport channels E. identity markers
Biology & Microbiology