Which method CANNOT be used to culture viruses in a laboratory?
a. Nutrient agar culture medium
b. Live animals
c. Embryonated eggs
d. Tissue culture
e. Primates
Ans: a. Nutrient agar culture medium
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A situation in which the birth rate equals the death rate is called
a. an intrinsic limiting factor. b. exponential growth. c. saturation. d. zero population growth. e. geometric growth.
Amniocentesis poses increased risks to the fetus and mother
a. True b. False
What is the correct order of events in mitosis?
A) anaphase, metaphase, prophase, telophase B) anaphase, prophase, metaphase, telophase C) metaphase, prophase, telophase, anaphase D) prophase, metaphase, anaphase, telophase
Which of the following organisms is using sulfur as a source of energy?
A) Thiobacillus: H2S ? S0 B) Desulfovibrio: SO42- ? H2S C) Proteus: Amino acids ? H2S D) Redwood tree: SO42- ? Amino acids E) Photosynthetic bacteria: H2S ? S0