Codons
A. are each comprised of a triplet of nucleotides.
B. provide the instructions for synthesizing proteins.
C. are unambiguous.
D. All of the choices are correct.
Answer: D
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Scientists recently cloned Louis Pasteur and put him back to work in a modern lab. He promptly developed a gel that breaks down proteins. Since he hasn't been around for some time,
he's unsure what the best application for his invention might be. Help him out. What pathogenic item in this gel would be most effective and safe at eliminating? A. Viroids on the surface of agricultural plant tissues B. Prions inside the central nervous system of cows C. Viruses on the surface of the skin D. Bacteria in the intestines of human beings E. The fungus that causes athlete's foot between people's toes
What process is responsible for creating the material commonly known as wood?
a. apical dominance b. primary growth c. secondary growth d. transpiration
A substance that in some way harms the health, activities or survival of a population is a(n)
a. pollutant. b. nonrenewable resource. c. ecological footprint. d. reservoir. e. limiting factor.
What is the first step in producing a transgenic animal?
A. inject the desired gene(s) into a donor egg B. transgenic organism produces offspring that have the desired gene which can then produce more transgenic offspring C. implantation of a donor egg into the host mother D. transgenic eggs are harvested from the surrogate mother