What is the substrate of the first step in the citric acid cycle?
A. Pyruvate
B. Coenzyme A
C. Fructose bisphosphate
D. Oxaloacetate
E. Citrate
Answer: D
Biology & Microbiology
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A group of organisms of the same genus within a community is called a ________.
A. habitat B. biome C. population D. niche E. community
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Fertilization is completed when the sperm nucleus fuses with the ________
Fill in the blank(s) with correct word
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Cell adhesion molecules can be divided into four major groups. Which of the following is not one of those groups?
a. Selectins b. Integrins c. Collagens d. Immunoglobulin superfamily
Biology & Microbiology
The streptomycetes form spores by division of the cells of the aerial mycelia in
A. two division planes consecutively. B. multiple division planes. C. a single division plane. D. two division planes simultaneously.
Biology & Microbiology