The end products of the citric acid cycle include all of the following except

A) CO2.
B) pyruvate.
C) ATP.
D) FADH2.


Answer: B

Biology & Microbiology

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A fox consumes a meal containing 5000 J of energy, and loses 1800 J in feces. If the fox has a production efficiency rate of 2%, how much energy does it use in cellular respiration and maintenance?

A. 1104 J B. 2200 J C. 44 J D. 2156 J E. 394 J

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Why did the British naturalist Edward Forbes conclude that animal life could not exist in the sea below a depth of 55 meters?

What will be an ideal response?

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As soil acidity increases, the concentration of ________ increases

A) Ca2+ B) Al3+ C) Na+ D) NH4+

Biology & Microbiology

As an undergraduate research assistant, your duties involve measuring water potential in experimental soil-plant-atmosphere systems

Assume you make a series of measurements in a system under normal daylight conditions, with stomata open and photosynthesis occurring. Which of the following correctly depicts the trend your measurement data should follow if the cohesion-tension mechanism is operating? A) ?soil < ?roots = ?leaves < ?atmosphere B) ?atmosphere < ?leaves = ?roots < ?soil C) ?soil < ?roots < ?leaves < ?atmosphere D) ?atmosphere < ?leaves < ?roots < ?soil

Biology & Microbiology