Which of the following is a basic component of all of the others?
a. cells
b. organs
c. tissues
d. organism
e. organ systems
ANSWER: a
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Liquid media containing heat-sensitive components would best be sterilized by
A. ultraviolet (UV) light at 500 nm. B. freezing. C. lyophilization. D. membrane filtration.
What single, circular structure is found in prokaryotes such as bacteria?
What will be an ideal response?
Dividing adult eukaryotic cells spend most of their time in which of the following?
A) metaphase B) prophase C) telophase D) interphase E) anaphase
Which of the following statements is TRUE?
A) There are at least thirty complement proteins. B) All of the complement proteins are constantly active in serum. C) Factors B, D, and P cause cytolysis. D) Complement activity is antigen-specific. E) Complement increases after immunization.