Evidence of a direct relationship between genes and enzymes, including development of the one geneone
enzyme hypothesis, came from studies conducted by ____ of arginine biosynthesis in mutant
stains of Neurospora.
a. Beadle and Tatum
b. Griffith
c. Watson and Crick
d. Garrod
e. Nirenberg and Leder
A
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The regular fluctuations in size of animal populations are termed _____
I) population cycles II) population dynamics III) growth factors A) only I B) only II C) only III D) only II and III E) I, II, and III
The chloroplast shares many similarities with which organelle?
a. mitochondrion b. rough endoplasmic reticulum c. nucleus d. Golgi complex e. lysosome
How was the virus detected?
A. by the presence of viral proteins B. by the presence of double-stranded RNA C. by the presence of antibodies to the virus D. by signs of infection E. by the ability to grow at 65°C
Compared to mammals and reptiles, what characteristic prevents amphibians from surviving far from water?
A) Their limbs are too weak to support their weight on land. B) They do not have any lungs and cannot breathe out of the water. C) Their eggs do not have an amnion which prevents them from drying out. D) Their cartilaginous endoskeleton would dry out on land.