Bovine spongiform encephalopathy, or mad cow disease, is caused by a

A) bacterium. B) prion. C) virus. D) viroid. E) fungus.


B

Biology & Microbiology

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The map distances for four linked genes are as follows: A is 22mu from B, B is 7mu from C, C is 9mu

from D, B is 2mu from D, A is 20mu from D, and A is 29mu from C. Based on these data, what is the order of these four genes on the chromosome?

a. ABCD b. ADBC c. ABDC d. BADC e. CADB

Biology & Microbiology

In the pulmonary circuit, pulmonary ____________________ carry oxygen poor blood to lungs and pulmonary ____________________ return oxygenated blood to the heart

Fill in the blank(s) with correct word

Biology & Microbiology

A hormone-receptor complex that stimulates the

formation of a second messenger is indicated by a. B. b. C. c. E. d. F. e. G.

Biology & Microbiology

The experiments that clearly distinguished DNA and not protein as the hereditary material were conducted by _____.

A. Pauling B. Hershey and Chase C. Griffith D. Watson and Crick E. Avery

Biology & Microbiology