The most basic essence of life is ____
a. reproduction of a keystone species
b. reproduction of genetic information
c. reproduction of cells
d. photosynthesis
e. redox reactions
ANSWER: b
Biology & Microbiology
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The pyrimidine bases are _______
A. cytosine, thymine, and uracil B. adenine and guanine C. adenine and thymine D. cytosine and guanine
Biology & Microbiology
Foreign particles circulating in the blood are filtered out by which of the following?
a. lymph b. lymph nodes c. mucosa-associated lymphoid tissue (MALT) d. spleen
Biology & Microbiology
What was the dominant life form of the Mesozoic era?
a. fish b. reptiles c. mammals d. amphibians e. vascular plants
Biology & Microbiology
Amino acids are monomers used to build:
A) polysaccharides. B) nucleic acids. C) triglycerides. D) proteins.
Biology & Microbiology