Which factor has the LEAST effect on the amount of incoming light that strikes an area?
a. latitude
b. temperature
c. the tilt of Earth’s axis
d. the amount of cloud cover
e. season
ANSWER: b
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Simple sequence repeat loci are highly variable because of what process?
A) repair of double strand breaks that result from exposure to X-rays B) exposure to DNA damaging chemicals found in food and water C) the formation of thymine dimers by ultraviolet light D) slipped mispairing during DNA replication
In a signal transduction pathway involving cAMP as a second messenger, after a G protein is
activated, the activated G protein then activates:a. phospholipase C. b. adenylyl cyclase. c. calmodulin. d. protein kinase. e. diacylglycerol.
This organism is associated with commonly causing urinary tract infections in sexually active young adult and adolescent females
A. Staphylococcus aureus B. Staphylococcus epidermidis C. Staphylococcus saprophyticus D. Streptococcus pyogenes E. Streptococcus agalactiae
Which of the following is NOT a possible restriction enzyme recognition site?
A: 5'GAAATTTC-3' B: 5'ACGTACGT-3' C: 5'AATTTTAA-3' D: 5'AAAATTTT-3' E: All of the above are possible recognition sites.