The experiments that clearly distinguished DNA and not protein as the hereditary material were conducted by _____
a. Pauling
b. Hershey and Chase
c. Griffith
d. Watson and Crick
e. Avery
ANSWER: b
You might also like to view...
The antennae of insects have a function most similar to that of _____
A) rhinophores B) dorsal plummules C) cerata D) chemoreceptors
Endophytic fungi were originally discovered in pine trees
a. True b. False
Alcohol has diuretic effects, increasing urine output. By which one of the following is this mediated?
A) Alcohol increases the amount of sodium reabsorbed. B) Alcohol decreases the amount of sodium reabsorbed. C) Alcohol makes the renal tubules more permeable to water. D) Alcohol inhibits the release of ADH. E) Drinks with alcohol also contain a lot of water, and the kidneys excrete this.
Evidence shows that humans began to cultivate crops from approximately ____ years ago
a. 200,000 b. 100,000 c. 10,000 d. 2,000 e. 1,000