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During cellular respiration, NADH

delivers its electron load to the first electron carrier molecule

Looking at the biosphere as a whole...the
energy used by your cells to do work ULTIMATELY comes from

The sun

When our cells carry out anaerobic respiration they use which one of the following processes?

Lactic acid fermentation

The mitochondrial cristae are an
adaptation that

increases the space for more copies of the electron transport chain and ATP syntheses complexes.

Respiration __________, and cellular
respiration __________.

is gas exchange . . . produces ATP

A culture of bacteria growing aerobically is fed glucose containing radioactive carbon and is then examined. As the bacteria metabolize the glucose, radioactivity will appear first in

glucose 6-phosphate.

Which one of the following gets oxidized
in cellular respiration?


The functioning of an electron transport
chain is analogous to

a Slinky toy going down a flight of stairs

Which of the following statements is/are true about the energy yields from cellular respiration?

Cellular respiration is more efficient at harnessing energy from glucose than car
engines are at harnessing energy from gasoline.

Both photosynthesis and aerobic cellular

produce ATP by using electron transport chains

The overall equation for the cellular
respiration of glucose is

C6H12O6 + 6 O2 → 6 CO2 + 6H2O + energy.

During which of the following phases of
cellular respiration does substrate-level phosphorylation take place?

glycolysis and the citric acid cycle

Which one of the following is the correct
sequence of stages in cellular respiration?

glycolysis, the citric acid cycle, and oxidative phosphorylation

At the end of the citric acid cycle, most of the energy remaining from the original glucose is stored in


Some friends are trying to make wine in their basement. They've added yeast to a sweet grape juice mixture and have allowed the yeast to grow. After several days they find that sugar levels in the grape juice have dropped, but there's no alcohol in the mixture. The most likely explanation is that:

he mixture needs less oxygen. Yeast only produce alcohol in the absence of oxygen.

The term anaerobic means

without CO2

In the electron transport chain, the final electron acceptor is

An oxygen atom


Takes places in virtually all cells

During chemiosmosis

ATP is synthesized when H+ ions move through a channel provided by ATP synthase.

The enzymes of the citric acid cycle
cycle are located in the

mitochondrial matrix

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