Charles Darwin and his son experimented with which plant growth response?  

A.  gravitropism
B.  circadian rhythms
C.  phototropism
D.  heat shock
E.  thermotropism


C.  phototropism

Biology & Microbiology

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A thermal inversion refers to

a. a layer of cool air trapped underneath a warm-air layer. b. the temperature of the atmosphere above land as opposed to the temperature of the atmosphere above bodies of water. c. a temperature-induced change in weather patterns. d. the cooling of the atmosphere at night. e. abnormal temperature changes in a season.

Biology & Microbiology

In the lagging stand, the DNA is read from the parental DNA's 3' to 5' end.

a. true b. false

Biology & Microbiology

Which base in an anticodon will pair with the base adenine in a codon?

A. thymine B. uracil C. cytosine D. guanine

Biology & Microbiology

Why is the ratio of male to female births roughly 50:50?

a. half of all sperm cells carry a Y chromosome b. all eggs carry an X chromosome c. half of all egg cells carry a Y chromosome d. all sperm cells carry an X chromosome

Biology & Microbiology