Which regulatory mechanism is important in keeping glycolysis and the citric acid cycle in relative balance to each other?

A. Citrate inhibits phosphofructokinase 1.
B. ADP up-regulates phosphofructokinase 1.
C. ATP inhibits phosphofructokinase 1.
D. AMP inhibits phosphofructokinase 1.


A

Biology & Microbiology

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A dipoid organism that you are studying has 17 chromosomes. How many total chromosomes are found in a somatic cell from this organism? A sperm cell? An egg cell?

A. 17; 16; 16 B. 17; 17; 17 C. 34; 17; 34 D. 34; 17; 17

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The major cost to plants for having cuticle-covered epidermis in the shoot system to reduce water loss is reduced ____

uptake.

a. carbon dioxide b. potassium c. nitrogen d. calcium e. oxygen

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Two snakes that have similar bright color patterns are exhibit aposematic coloration

Indicate whether the statement is true or false.

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Which membranes line the passageways that open to the exterior of the body, including those of the respiratory, digestive, reproductive, and urinary systems in the body?

A) cutaneous B) basement C) mucous D) serous

Biology & Microbiology