Phloem sap does not normally contain ____

a. carbohydrates
b. hormones
c. water
d. amino acids
e. nitrate


ANSWER: a

Biology & Microbiology

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Which of the following best describes the basis for separation of DNA fragments during agarose gel electrophoresis?

A. The largest fragments will migrate fastest. B. The fragments with the highest percentage of A and T will migrate fastest. C. The smallest fragments will migrate fastest. D. The fragments with the highest percentage of G and C will migrate fastest.

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In sequencing by synthesis (SBS) methods, the sequence of a sample is directly determined as nucleotides are incorporated into a DNA strand by DNA polymerase

Indicate whether the statement is true or false

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What percentage survived after treatment B?

a. 30 percent b. 50 percent c. 70 percent d. 75 percent

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If fermentation pathways follow glycolysis, ____

a. CO2 will be one of the products as pyruvate is converted to lactate b. the two NADH molecules produced during glycolysis will (depending on the organism) be used to reduce pyruvate to either lactate or ethanol and CO2 c. ATP will be required to convert pyruvate to either lactate or ethanol and CO2 d. oxidative phosphorylation occurs either on the plasma membrane or on derivatives of the plasma membrane e. ATP will be required to convert lactate to pyruvate and CO2

Biology & Microbiology