Carbon dioxide is released during the Krebs cycle.
During which phase of cellular respiration is carbon dioxide released?(1 point)
Responses
glycolysis
glycolysis
electron transport chain
electron transport chain
digestion
digestion
Krebs cycle
11 answers
How many glucose molecules can undergo cellular respiration when 13 O2 molecules are available to react?(1 point)
Responses
3
3
1
1
0
0
2
Responses
3
3
1
1
0
0
2
In cellular respiration, one glucose molecule (C6H12O6) requires 6 oxygen molecules (O2) to fully oxidize into carbon dioxide and water. Therefore, with 13 O2 molecules available, you can calculate how many glucose molecules can react as follows:
- Each glucose requires 6 O2, so you can calculate how many full sets of 6 fit into 13:
\[ 13 \text{ O2} \div 6 \text{ O2/glucose} = 2.1667 \]
This means that you can fully oxidize 2 glucose molecules with 12 O2 molecules, and you will have 1 O2 molecule left over.
So, the answer is 2.
How many O2 molecules are required for two glucose molecules to undergo cellular respiration?(1 point)
Responses
12
12
6
6
18
18
2
Responses
12
12
6
6
18
18
2
For one glucose molecule, 6 oxygen (O2) molecules are required for cellular respiration. Therefore, for two glucose molecules, the calculation would be:
\[ 2 \text{ glucose} \times 6 \text{ O2/glucose} = 12 \text{ O2} \]
So, the answer is 12.
Which activity uses ATP to lower body temperature?(1 point)
Responses
fluffing up feathers
fluffing up feathers
panting
panting
shivering
shivering
sheltering in the shade
Responses
fluffing up feathers
fluffing up feathers
panting
panting
shivering
shivering
sheltering in the shade
The activity that uses ATP to lower body temperature is panting. Panting helps increase evaporative cooling, which can reduce body temperature.
How can Gram staining be used to identify how some bacteria respond to their environmental conditions?(1 point)
Responses
Gram staining helps scientists visualize the composition of bacterial cells.
Gram staining helps scientists visualize the composition of bacterial cells.
Gram staining helps scientists visualize structures that aid bacterial motility.
Gram staining helps scientists visualize structures that aid bacterial motility.
Gram staining helps scientists visualize the thickness of bacteria.
Gram staining helps scientists visualize the thickness of bacteria.
Gram staining helps scientists visualize bacterial antibiotic resistance.
Responses
Gram staining helps scientists visualize the composition of bacterial cells.
Gram staining helps scientists visualize the composition of bacterial cells.
Gram staining helps scientists visualize structures that aid bacterial motility.
Gram staining helps scientists visualize structures that aid bacterial motility.
Gram staining helps scientists visualize the thickness of bacteria.
Gram staining helps scientists visualize the thickness of bacteria.
Gram staining helps scientists visualize bacterial antibiotic resistance.
The correct response is: Gram staining helps scientists visualize the composition of bacterial cells.
Gram staining differentiates bacteria based on the composition of their cell walls, which indicates how they may respond to environmental conditions, such as the presence of antibiotics or their ability to react to other chemical agents.
Which statement about protists is true?(1 point)
Responses
Protists can develop pseudopodia to move around.
Protists can develop pseudopodia to move around.
Protists have different structures, but similar ecological roles.
Protists have different structures, but similar ecological roles.
Protists can be plant-like, animal-like, or fungus-like, based on their morphology.
Protists can be plant-like, animal-like, or fungus-like, based on their morphology.
Protists are characterized by rigid cellular structures, like plants.
Responses
Protists can develop pseudopodia to move around.
Protists can develop pseudopodia to move around.
Protists have different structures, but similar ecological roles.
Protists have different structures, but similar ecological roles.
Protists can be plant-like, animal-like, or fungus-like, based on their morphology.
Protists can be plant-like, animal-like, or fungus-like, based on their morphology.
Protists are characterized by rigid cellular structures, like plants.
The true statement about protists is: Protists can be plant-like, animal-like, or fungus-like, based on their morphology.
This captures the diversity of protists and their classification based on characteristics and functions, rather than rigid cellular structures like those found in plants.
1 answer