Microtubules have an inner diameter of ________ and an outer diameter of ________.
A) 15 mm; 25 mm
B) 8 nm; 12 nm
C) 25 nm; 30 nm
D) 15 nm; 25 nm
E) 7 mm; 14 mm
D) 15 nm; 25 nm
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In the cultivation of microaerophilic and anaerobic bacteria,
A. a(n) candle/anaerobe jar is sufficient. B. atmospheric oxygen in a(n) candle/anaerobe jar is converted to water. C. a packet containing chemicals that generate carbon dioxide and hydrogen is used in a(n) candle/anaerobic jar. D. oxidizing agents are incorporated into the media that react with oxygen.
A plant embryo (young sporophyte) packaged with a food supply in a tough outer coat is a:
a. Gemmae b. Pollen grain c. Seed d. Sperm e. Fruit
An injection of ACTH would cause an increase in the release of which of the following hormones?
A) antidiuretic hormone B) growth hormone C) thyroxin D) glucocorticoids
Which of the following is a by-product of the catabolism of proteins?
A. lactic acid B. acetyl-CoA C. proteases D. ammonia E. carbon dioxide