The ability to determine an object's location using high frequency sound waves is exhibited by
A. bats flying in darkness.
B. owls hunting at night.
C. whales and dolphins at sea.
D. amphibians underwater.
Ans:
A. bats flying in darkness.
C. whales and dolphins at sea.
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Of the following list, which antibiotics affect protein synthesis?
A. Penicillin B. Ciprofloxacin C. Chloramphenicol D. Tetracycline E. Both tetracycline and chloramphenicol are correct.
The type of muscle that typically surrounds hollow tubes and organs like the stomach is
A. cardiac muscle. B. striated muscle. C. smooth muscle. D. skeletal muscle. E. voluntary muscle.
DNA microarrays use enzymes to convert mRNA obtained from the cell into cDNA. This cDNA is hybridized with known DNA from specific genes isolated from the organism. If hybridization occurs, what does this mean?
A. It means the DNA has transformed into another type of DNA and the corresponding genes are present in the cell. B. It means the DNA has not transformed into another type of DNA and the corresponding genes are not present in the cell. C. It means the cDNA has bound to complementary DNA on the microarray, indicating that the corresponding gene is being expressed in the cell. D. It means the cDNA has not bound to the complementary DNA on the microarray, indicating that the corresponding gene is not being expressed in the cell.
________ is an example of an element
A) Water B) Carbon C) Glucose D) Salt