BISC 1005 Mastering Biology chapter 8
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How many NADH are produced by glycolysis?
Ans: 2
In glycolysis, ATP molecules are produced by
Ans: substrate-level phosphorylation
Name products of glycolysis
Ans: NADH + H+, ATP, pyruvate, and water
In glycolysis what starts the process of glucose breakdown?
Ans: ATP
What enters the Krebs cycle also known as the citric acid cycle?
Ans: acetyl CoA
In the citric acid cycle (also called the Krebs cycle), ATP molecules are produced by
_____.
Ans: substrate-level phosphorylation
What are the products of the citric acid cycle (krebs cycle)?
Ans: ATP, NADH + H+, CO2, and FADH2
In cellular respiration, most ATP molecules are produced by _____.
Ans: oxidative phosphorylation
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For each glucose that enters glycolysis, _____ NADH enter the electron transport
chain.
Ans: For each glucose molecule that enters glycolysis, a total of 10 NADH are
produced -- 2 are produced in glycolysis, 2 are produced in acetyl CoA production,
and 6 are produced in the citric acid cycle.
The final electron acceptor of cellular respiration is _____.
Ans: oxygen
During electron transport, energy from _____ is used to pump hydrogen ions into
the _____.
Ans: NADH and FADH2 ... intermembrane space
The proximate (immediate) source of energy for oxidative phosphorylation is _____
Ans: kinetic energy that is released as hydrogen ions diffuse down their
concentration gradient
In muscle cells, fermentation produces _____.
Ans: lactate and NAD+
what is the correct sequence of steps as energy is extracted from glucose during
cellular respiration.
Ans: glycolysis → acetyl CoA → citric acid cycle → electron transport chain
Why do cells convert the energy stored in the bonds of glucose into energy stored
in the bonds of ATP?
Ans: Glucose is not a usable energy source for most enzymes.