Which of the following is a reactant of cellular respiration? (1 point)
Glucose
The reactants of cellular respiration are glucose (C6H12O6) and oxygen (O2).
To determine which substance is a reactant of cellular respiration, we need to understand the process of cellular respiration. Cellular respiration is the metabolic process through which cells convert glucose (a type of sugar) and oxygen into energy, carbon dioxide, and water. It occurs in the mitochondria of cells.
Given the reaction equation for cellular respiration:
Glucose + Oxygen → Carbon Dioxide + Water + Energy
From the equation, it is clear that glucose and oxygen are the reactants. Therefore, the correct answer is glucose.
Which of the following is a reactant of cellular respiration? (1 point)
Responses
energy.
energy.
carbon dioxide.
carbon dioxide.
water.
water.
oxygen.
The correct answer is oxygen.
What is the definition of cellular respiration?(1 point)
Responses
the process of using the chemical energy from hydrogen and oxygen molecules to power life processes
the process of using the chemical energy from hydrogen and oxygen molecules to power life processes
the process of capturing the sun’s energy, converting it into oxygen, and releasing it into the atmosphere
the process of capturing the sun’s energy, converting it into oxygen, and releasing it into the atmosphere
the process of using the chemical energy from food and oxygen molecules to power life processes
the process of using the chemical energy from food and oxygen molecules to power life processes
the process of capturing the sun’s energy, converting it into sugar, and storing it in tissues
The correct answer is:
the process of using the chemical energy from food and oxygen molecules to power life processes
Which statement is true?(1 point)
Responses
Cellular respiration takes place in the cytoplasm and mitochondria.
Cellular respiration takes place in the cytoplasm and mitochondria.
Cellular respiration takes place in the cytoplasm and the Golgi apparatus.
Cellular respiration takes place in the cytoplasm and the Golgi apparatus.
Cellular respiration takes place in the cytoplasm and the nucleus.
Cellular respiration takes place in the cytoplasm and the nucleus.
Cellular respiration takes place in mitochondria and chloroplasts.
The correct statement is:
Cellular respiration takes place in the cytoplasm and mitochondria.
Which statement correctly classifies ATP, cytoplasm, and mitochondria?(1 point)
Responses
ATP is found in the cytoplasm, and cytoplasm is found in the mitochondria.
ATP is found in the cytoplasm, and cytoplasm is found in the mitochondria.
Mitochondria are found in the cytoplasm, and cytoplasm is found in ATP.
Mitochondria are found in the cytoplasm, and cytoplasm is found in ATP.
Cytoplasm is found in ATP, and ATP is found in the mitochondria.
Cytoplasm is found in ATP, and ATP is found in the mitochondria.
ATP is found in mitochondria, and mitochondria are found in the cytoplasm.
The correct statement is:
ATP is found in mitochondria, and mitochondria are found in the cytoplasm.
If one molecule of glucose undergoes the reaction of glycolysis, what is produced?(1 point)
Responses
1 ATP, 3 NADH, and 1 Pyruvate
1 ATP, 3 NADH, and 1 Pyruvate
3 NADH and 1 FADH2
3 NADH and 1 FADH2
4 ATPs, 6 NADH, and 2 FADH2
4 ATPs, 6 NADH, and 2 FADH2
2 ATPs, 2 NADH, and 2 Pyruvate
If one molecule of glucose undergoes the reaction of glycolysis, the following is produced:
2 ATPs, 2 NADH, and 2 Pyruvate.
What are the functions of the high-energy electrons in the electron transport chain?(1 point)
Responses
They hold water bonds.
They hold water bonds.
They make ATP from ADP.
They make ATP from ADP.
They create ATP synthase.
They create ATP synthase.
They carry NADH and FADH2.
The correct answer is:
They make ATP from ADP.
High-energy electrons in the electron transport chain are used to power the pumping of protons across the inner mitochondrial membrane, creating a proton gradient. This gradient is then used by ATP synthase to generate ATP from ADP and inorganic phosphate.
How many electrons must move down the Electron Transport Chain before energy is made?(1 point)
Responses
4
4
3
3
5
5
2
The correct answer is 2.
Two electrons must move down the Electron Transport Chain to generate energy.
During cellular respiration, the covalent bonds of a molecule are broken down to make products. Which molecule is broken down?(1 point)
Responses
water
water
carbon dioxide
carbon dioxide
ADP
ADP
sugar
sugar
The correct answer is sugar.
During cellular respiration, four total ATP are produced when pyruvic acid is created. What else is produced as a result of this reaction?(1 point)
Responses
water
water
oxygen
oxygen
sugar
sugar
heat
The correct answer is heat.
Why does hydrogen bond so tightly to oxygen during cellular respiration?(1 point)
Responses
It is less electronegative than oxygen.
It is less electronegative than oxygen.
It is more electronegative than oxygen.
It is more electronegative than oxygen.
It is not electronegative, but oxygen is.
It is not electronegative, but oxygen is.
It is electronegative, but oxygen is not.
The correct answer is:
It is more electronegative than oxygen.
Hydrogen is less electronegative than oxygen, which means it is more willing to share its electrons with oxygen. This creates a strong attraction between the two atoms, resulting in a tight bond during cellular respiration.
dentify the byproduct of lactic acid fermentation.(1 point)
Responses
lactic acid
lactic acid
oxygen
oxygen
carbon dioxide
carbon dioxide
pyruvic acid
The correct answer is:
lactic acid
When a reaction releases more energy than it uses, it is called(1 point)
Responses
emeritus
emeritus
exothermic
exothermic
catalyst
catalyst
lactic
The correct answer is:
exothermic
How many molecules of pyruvic acid are produced when a single glucose molecule undergoes glycolysis?(1 point)
Responses
1
1
4
4
2
2
0
The correct answer is:
2
When a single glucose molecule undergoes glycolysis, it is broken down into two molecules of pyruvic acid.
Order the atoms involved in cellular respiration from most prevalent to least.(1 point)
Responses
O, H, C
O, H, C
C, H, O
C, H, O
H, C, O
H, C, O
H, O, C
The correct answer is:
C, H, O
In cellular respiration, the carbon (C) atoms are the most prevalent, followed by hydrogen (H) atoms, and then oxygen (O) atoms.
How many CO2 molecules are produced when three glucose molecules undergo cellular respiration?(1 point)
Responses
12
12
3
3
18
18
6
6
When three glucose molecules undergo cellular respiration, the correct answer is:
18 CO2 molecules.
Suppose cellular respiration occurs inside an insulated, sealed container. How does the container’s weight change during the reaction?(1 point)
Responses
decreases
decreases
fluctuates
fluctuates
stays the same
stays the same
increases
The container's weight stays the same during the reaction.
How would a 3D model of glucose differ from the formula model?(1 point)
Responses
A 3D model shows the number of each type of atom, but the formula model does not
A 3D model shows the number of each type of atom, but the formula model does not
A 3D model shows how the different atoms are arranged, but the formula model does not.
A 3D model shows how the different atoms are arranged, but the formula model does not.
A formula model shows which atoms are larger but the 3D model does not.
A formula model shows which atoms are larger but the 3D model does not.
A formula model shows size of the glucose molecule, but the 3D model does not.
The correct answer is:
A 3D model shows how the different atoms are arranged, but the formula model does not.
A 3D model of glucose would depict the spatial arrangement of the atoms, allowing us to see how they are connected and the overall shape of the molecule. On the other hand, a formula model simply represents the chemical formula of glucose, indicating the types and quantities of atoms involved.