Chapter 06 Core Content
What molecules belong in spaces E and F?
carbon dioxide and water
What process occurs within Box B?
citric acid cycle
What is the name of the process in which pyruvic acid is converted to lactic acid?
fermentation
Chemical reactions that require oxygen are called _____ while those that do not require oxygen are considered
aerobic ... anaerobic
What molecules belong in space A and B?
glucose and oxygen
What process occurs in Box A?
glycolysis
Which of the following processes takes place in the cytosol of a eukaryotic cell?
glycolysis
The main function of cellular respiration is
making ATP to power cell activities
In what organelle would you find acetyl CoA formation, the citric acid cycle, and the electron transport chain?
mitochondrion
What organelle is indicated by the letter C?
mitochondrion
In cellular respiration, most ATP molecules are produced by _
oxidative phosphorylation
The final electron acceptor of cellular respiration is
oxygen
What process occurs in structure H?
photosynthesis
In glycolysis, ATP molecules are produced by
substrate-level phosphorylation
The electron transport chain is a series of electron carrier molecules. Where are these molecules located in eukaryotic cells?
the inner membrane of the mitochondria
For each glucose that enters glycolysis, _____ NADH enter the electron transport chain.
10
In the absence of oxygen the net gain of ATP for each glucose molecule during glycolysis is approximately _
2 ATPs
In glycolysis, what starts the process of glucose breakdown?
ATP
Structure A is
ATP synthase
What is the correct general equation for cellular respiration?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy
Which of these is NOT a product of glycolysis?
FADH2
A glucose molecule is completely broken down upon completion of glycolysis and the citric acid cycle. However, these two processes yield only a few ATPs. What other energy carrier(s) that can be used to synthesize more ATPS is/are also generated during these processes?
NADH and FADH2
During electron transport, energy from _____ is used to pump hydrogen ions into the ____
NADH and FADH2 ... intermembrane space
What molecule is indicated by the letter D?
Oxygen
In muscle cells, fermentation produces
lactate and NAD+
Which statement describes the citric acid cycle?
This process produces some ATP and carbon dioxide in the mitochondrion.
Which statement describes glycolysis?
This process splits glucose in half and produces 2 ATPs for each glucose.
Which statement describes the electron transport chain?
This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration
Glycolysis occurs in almost all organisms on Earth. From this we might conclude that
glycolysis evolved very early in ancestors that are common to all the domains of life
Drag the labels onto the diagram to identify the stages of cellular respiration.
glycolysis → acetyl CoA → citric acid cycle → electron transport chain
Select the correct sequence of steps as energy is extracted from glucose during cellular respiration.
glycolysis → acetyl CoA → citric acid cycle → electron transport chain
The proximate (immediate) source of energy for oxidative phosphorylation is
kinetic energy that is released as hydrogen ions diffuse down their concentration gradient
How many NADH are produced by glycolysis?
two
In glycolysis there is a net gain of _____ ATP.
two
An important end product of cellular respiration is _
water
