Which stretch of double-stranded DNA is most likely to be recognized as a restriction enzyme cutting site?

A. 5?-GAATCG-3?
3?-CTTAGC-5?.
B. 5?-TCCGGA-3?
3?-AGGCCT-5?.
C. 5?-ACCCCT-3?
3?-TGGGGA-5?.
D. 5?-TTTTTT-3?
3?-AAAAAA-5?.
E. 5?-GTTCAT-3?
3?-CAAGTA-5?.


B. 5?-TCCGGA-3?
3?-AGGCCT-5?.

Biology & Microbiology

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When utilizing fats as an energy source, the glycerol portion enters the ________ when it has been converted to ________.

A) TCA cycle; pyruvate B) glycolysis; fructose-6-phosphate C) TCA cycle; acetyl CoA D) electron transport system; CoQ E) glycolysis; dihydroxyacetone phosphate

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Amniocentesis is not performed on mothers over the age of thirty-five

a. True b. False Indicate whether the statement is true or false

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To reproduce sexually, bryophytes require  

A.  heterospory. B.  free water external to the plant. C.  high temperatures. D.  solar energy. E.  insect pollination.

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Which of the following animals is generating (producing) body heat to warm itself?

A) a beetle that absorbs solar radiation B) a moth that shivers its wings before flight C) a lizard that lies on a warm rock D) a turtle that moves to a warm, shallow part of a pond

Biology & Microbiology