How many molecules of pyruvic acid are produced when a single glucose molecule undergoes glycolysis?(1 point)
Responses
2
2
0
0
4
4
1
2
The correct answer is 2. When a single glucose molecule undergoes glycolysis, it is broken down into two molecules of pyruvic acid.
To determine how many molecules of pyruvic acid are produced during glycolysis, we need to understand the process of glycolysis.
Glycolysis is the first step in cellular respiration, where glucose molecules are broken down into pyruvic acid molecules. Glycolysis occurs in the cytoplasm of the cell and does not require oxygen.
During glycolysis, one molecule of glucose, which contains 6 carbon atoms, is converted into two molecules of pyruvic acid, each containing 3 carbon atoms. This process involves a series of enzymatic reactions that result in the production of two molecules of ATP and two molecules of NADH.
Therefore, the correct answer is 2.
Order the atoms involved in cellular respiration from most prevalent to least.(1 point)
Responses
H, C, O
H, C, O
H, O, C
H, O, C
O, H, C
O, H, C
C, H, O
C, H, O
How many CO2 molecules are produced when three glucose molecules undergo cellular respiration?(1 point)
Responses
3
3
18
18
6
6
12
When three glucose molecules undergo cellular respiration, they are completely oxidized and produce a total of 6 CO2 molecules. Each glucose molecule produces 2 CO2 molecules during the process of aerobic respiration. Therefore, 3 glucose molecules would produce a total of 3 x 2 = 6 CO2 molecules.
Suppose cellular respiration occurs inside an insulated, sealed container. How does the container’s weight change during the reaction?(1 point)
Responses
stays the same
stays the same
increases
increases
decreases
decreases
fluctuates
fluctuates
The weight of the sealed container will stay the same during the cellular respiration reaction. The reaction involves the conversion of glucose and oxygen into carbon dioxide, water, and energy. The total mass of the reactants (glucose and oxygen) is equal to the total mass of the products (carbon dioxide, water, and energy). Therefore, there is no net change in the mass of the system, and the weight of the container remains the same.
How would a 3D model of glucose differ from the formula model?(1 point)
Responses
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 size of the glucose molecule, but the 3D model does not.
A formula model shows size of the glucose molecule, but the 3D 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 3D model shows the number of each type of atom, but the formula model does not