If the product of a functional gene is not a protein, what other product(s) might be encoded by the gene?
A. tRNA and rRNA
B. mRNA, tRNA, and RNA
C. tRNA and mRNA
D. mRNA and rRNA
Answer: A
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Although the actinomycetes are generally nonmotile, the spores may be flagellated and, therefore, motile.
Answer the following statement true (T) or false (F)
The coelacanth (Latimeria) is ________
a. an Australian lungfish b. an extinct lobe-finned fish c. the only living lobe-finned fish d. an early amphibian
Which statement is true?
a. The anterior pituitary gland is essentially nervous tissue. b. The anterior pituitary gland secretes only two hormones. c. Only the posterior part of the pituitary gland could be called the "master gland." d. The posterior pituitary gland only stores hormones produced by the hypothalamus. e. The anterior pituitary gland is conencted to the hpothalamus via the infindibulum.
The gas exchange system that depends least on blood perfusion is the system found in _________.
A. birds B. amphibians C. insects D. humans