A collection of host cells that house cloned fragments representing expressed genes is a____.
A. cDNA library.
B. transcribed library.
C. genomic library.
D. RNA library.
E. plasmid library.
Answer: A
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The excretory system used by adult mollusks consists of tubules called ____
a. nephrons b. hepatic tubules c. metanephridia d. Malpighian tubules e. protonephridia
Nitrogen fixation and nitrification are directly important processes for:
a. heterotrophic animals. b. heterotrophic bacteria. c. autotrophic organisms. d. fungi. e. viruses.
What muscle is found on the anterior thigh and is a hip flexor/knee extensor?
Nearly half of the human genome is composed of a noncoding DNA that can move from one chromosomal location to another. This type of noncoding DNA is/are called
A. introns. B. pseudogenes. C. microRNA genes. D. transposons. E. tandem clusters.