A substance that is a solid
A. contains a large amount of oxygen.
B. contains molecules that are packed tightly together and vibrate in place.
C. is bonded very tightly (covalent).
D. contains a large amount of hydrogen bonds.
B. contains molecules that are packed tightly together and vibrate in place.
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Virtually all enzymes are:
A) carbohydrates. B) nucleic acids. C) proteins. D) substrates.
All of the following are found in eukaryotic cells EXCEPT
a. a nucleus. b. a mitochondrion. c. a nucleoid. d. ribosomes.
Figure _________ represents meiosis II for an organism with a diploid number of 4.
A. A
B. B
C. C
D. D
Yeasts are advantageous for studying secretory pathways because
a. they secrete more proteins per cell than animal cells. b. one can easily isolate Golgi apparatuses. c. they are amenable to genetic analysis. d. they have only one simple pathway for secreted proteins.