AIDS kills about ____ million people each
year.
a. 2,000
b. 20,000
c. 200,000
d. 2,000,000
e. 2,000,000,000
D
Biology & Microbiology
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Which organism is a nitrogen-fixing symbiont of legumes?
A. Clostridium B. Nitrobacter C. Pseudomonas D. Rhizobium
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Outline the two parts of the eukaryotic cell cycle and describe the three main checkpoints in cell cycle regulation. What will be an ideal response?
Biology & Microbiology
During which mitotic phases are duplicated chromosomes present?
(a) all but telophase (b) prophase and anaphase (c) all but anaphase and telophase (d) only during metaphase at the metaphase plate (e) both b and b are correct
Biology & Microbiology
Hormones secreted by endocrine glands belong to all the following chemical categories except
A. glycoproteins. B. steroids. C. polypeptides. D. amines. E. carbohydrates.
Biology & Microbiology