When a single glucose molecule undergoes glycolysis, it is converted into 2 molecules of pyruvic acid. Therefore, the correct response is:
2
How many molecules of pyruvic acid are produced when a single glucose molecule undergoes glycolysis?(1 point)
Responses
1
1
0
0
4
4
2
7 answers
Order the atoms involved in cellular respiration from most prevalent to least.(1 point)
Responses
O, H, C
O, H, C
H, C, O
H, C, O
H, O, C
H, O, C
C, H, O
Responses
O, H, C
O, H, C
H, C, O
H, C, O
H, O, C
H, O, C
C, H, O
In cellular respiration, the most prevalent atoms in terms of quantity involved are typically in the order of:
- H (Hydrogen)
- O (Oxygen)
- C (Carbon)
This ordering reflects the fact that while glucose (which contains carbon) is used in the process, the overall reaction involves more hydrogen atoms and oxygen as they are released during metabolic processes, particularly in the form of water and carbon dioxide.
Therefore, the correct response is:
H, O, C
How many CO2 molecules are produced when three glucose molecules undergo cellular respiration?(1 point)
Responses
3
3
12
12
6
6
18
Responses
3
3
12
12
6
6
18
During cellular respiration, each glucose molecule produces 6 molecules of carbon dioxide (CO2) when completely metabolized.
If three glucose molecules are used, the total amount of CO2 produced would be:
\[ 3 \text{ glucose} \times 6 \text{ CO2/glucose} = 18 \text{ CO2} \]
Therefore, the correct response is:
18
Suppose cellular respiration occurs inside an insulated, sealed container. How does the container’s weight change during the reaction?(1 point)
Responses
decreases
decreases
increases
increases
stays the same
stays the same
fluctuates
Responses
decreases
decreases
increases
increases
stays the same
stays the same
fluctuates
In a sealed, insulated container where cellular respiration occurs, the weight of the container will stay the same.
This is because while glucose and oxygen are consumed and carbon dioxide and water are produced, the total mass of the reactants and products remains constant due to the law of conservation of mass. The gases produced (like CO2 and water vapor) are still contained within the sealed container, so there is no loss of mass.
Therefore, the correct response is:
stays the same.