It is thought that viruses may have originated from cells because ____
a. of their small size
b. they are pathogens
c. they can only replicate within a host cell
d. they do not have organelles
e. of their genetic material
ANSWER: c
You might also like to view...
What common life characteristic would cells from a daisy, an apple and a dog all have?
A. DNA B. tissues C. organs D. viruses
Which type of meristem is only found in monocots?
a. apical b. lateral c. intercalary d. permanent
The techniques by which DNA sequence information is used for deriving the three-dimensional
structure of proteins is called ____________________ genomics. Fill in the blank(s) with the appropriate word(s).
Proteins digested by trypsin in the stomach are broken down to amino acids in
A. hydrolysis reactions. B. anabolic reactions. C. dehydration reactions. D. denaturation reactions.