A polycistronic mRNA with six protein coding genes would have:
A. 1 start codon and 1 stop codon.
B. 1 start codon and 6 stop codons.
C. 6 start codons and 1 stop codon.
D. 6 start codons and 6 stop codons.
E. 3 start codons and 3 stop codons.
Answer: D
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A. certain drugs. B. urea and uric acid. C. water molecules. D. glucose molecules. E. K+, H+, and other ions.
Temperature extremes, lack of water, and other environmental stresses trigger an increase in which hormone?
a. gibberellin b. auxin c. abscisic acid d. ethylene e. cytokinin
The dragline that is laid by many spiders serves as a means of:
A. capturing prey. B. capturing a mate. C. detecting the pull of gravity. D. communication. E. holding the eggs of spiders
In intracytoplasmic sperm injection (ICSI), a single sperm is injected into an egg in an attempt to create a zygote.
Answer the following statement true (T) or false (F)