Cada pregunta de este test está cronometrada.
1000 Calories make up 1 calorie.
Cellular respiration starts with a pathway called .
The carriers for energy and high energy electrons during GLYCOLYSIS are
ATP
NADH
FADH2
NADPH
If oxygen is NOT present, glycolysis is followed by
Krebs cycle
Electron transport chain
Fermentation
Aerobic respiration
Fill in the chemical equation for cell respiration.
+ → + +
The 3-carbon molecule produced when glucose is broken in half during glycolysis is called
lactic acid
acetyl-CoA
pyruvic acid (pyruvate)
citric acid
Glycolysis results in the net gain of 4 electrons.
What role does O2 play in aerobic respiration?
It combines with acetyl-CoA at the start of the Krebs cycle
It combines with H2O to help drive the formation of ATP
It is the final electron acceptor at the end of the electron transport chain
It plays no role
NADH is produced during
glycolysis
oxidation of pyruvate
the Krebs cycle
all of the above
What substance is regenerated by fermentation?
O2
NAD+
Which of the following are produced during the Krebs Cycle? (Check ALL that apply)
CO2
Which stage of cell respiration produces the most ATP?
electron transport chain
fermentation
Which of the following happens as electrons pass down the Electron Transport Chain? (Check ALL that apply)
Energy from the moving electrons transports H+ ions into the intermembrane space
Carbon dioxide is released
Energy from H+ ions crossing back into the matrix causes ATP synthase to make ATP
Water is produced
Describe which type of fermentation takes place in the following examples.
a. Yeast use this to make bread dough rise. ❌ b. Your muscles use this during rapid exercise when oxygen is low. ❌
A net 32 34 36 38( 32, 34, 36, 38 ) ATP molecules are formed during cellular respiration.
Name the ? molecule that joins in this reaction to make Acetyl-CoA.
NADP+
Coenzyme A
Citric acid
If oxygen is present, what will happen to the NADH produced in this reaction?
Its electrons will enter the electron transport chain
It will donate its H+ ions to make glucose
It will join with ATP to make citric acid
It will join with oxygen to make CO2
What is the 6-carbon molecule that form when acetyl-CoA joins its 2 carbons to a 4-carbon molecule during the Krebs Cycle?
Pyruvic acid
Glucose
Citric Acid
Place where glycolysis happens.
A
B
C
D
E
Which of the following are true about label C in the diagram? (Check ALL that apply)
Place where enzymes for the electron transport chain are located
Place where ADP and P join to make ATP
Place where oxygen joins as the final electron acceptor
It is known as the matrix
It is an inner membrane called cristae
In which order do the stages of aerobic cellular respiration occur?
glycolysis, citric acid cycle, pyruvate oxidation, electron transport chain.
citric acid cycle, glycolysis, electron transport chain, pyruvate oxidation.
glycolysis, citric acid cycle, electron transport chain, pyruvate oxidation.
glycolysis, pyruvate oxidation, citric acid cycle, electron transport chain.
This diagram is of a mitochondrion. Select the correct labels from the following.
A: outer membrane, B: intermembrane space, C: crista, D: matrix
A: outer membrane, B: crista, D: matrix, E: outer membrane
A: intermembrane space, B: inner membrane, C: crista, D: matrix
A: inner membrane, B: intermembrane space, D: matrix, E: outer membrane
Photosynthesis Cellular respiration( Photosynthesis, Cellular respiration ) releases oxygen into the atmosphere, and cellular respiration photosynthesis( cellular respiration, photosynthesis ) uses the oxygen to release energy from food.
Which of the following is NOT a stage of cellular respiration?
Electron transport
Glycolysis