What is the fundamental source of energy in the food you eat?
plants
sun***
sugar
photosynthesis
Positive hydrogen ions form during intermediate stages of photosynthesis. What is the composition of these ions?
a proton and two electrons
a proton and an electron
two protons and an electron
a single proton***
Which statement is true?
The Calvin cycle is the light-independent stage of photosynthesis and occurs in the thylakoid membrane.
The Calvin cycle is the light-independent stage of photosynthesis and occurs in the stroma.***
The Calvin cycle is the light-dependent stage of photosynthesis and occurs in the stroma.
The Calvin cycle is the light-dependent stage of photosynthesis and occurs in the thylakoid membrane
Higher energy contained in the sugar molecules produced by photosynthesis comes from
water molecules.
ATP.
light.***
carbon dioxide molecules
Which equation best summarizes cellular respiration?
C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy***
6H2O + 6CO2 → C6H12O6 + 6O2 + Energy
C6H12O6 + 6O2 + 6CO2 → 6H2O + Energy
6H2O + 6CO2 + Energy → C6H12O6 + 6O2
Which statement is true?
Proteins and carbohydrates have the same amount of energy.***
Carbohydrates have a higher amount of energy than proteins.
Fats and proteins have the same amount of energy.
Fats have a lower amount of energy than carbohydrates.
In the Krebs cycle, how is citric acid formed?
Enzymes combine hydrogen ions, oxygen, and electrons.
Pyruvic acid molecules are broken down by an acetyl group.
Acetyl-CoA joins with a large molecule called oxaloacetic acid.***
Carbon dioxide bonds with a chain of coenzyme A.
The following are components of cellular respiration except
glycolysis.
electron transport chain.
electrolysis.***
the Krebs cycle.
Which macromolecule provides the energy that starts glycolysis?
sugar
ATP***
water
carbon dioxide
During which phase of cellular respiration is carbon dioxide released?
electron transport chain***
digestion
Krebs cycle
glycolysis
Which compound is a reactant in cellular respiration?
carbon dioxide
water
oxygen***
ATP
How many O2 molecules are required for two glucose molecules to undergo cellular respiration?
6
18
12***
2
Which statement is true?
Endotherms can insulate their bodies but can only self-regulate their body temperature voluntarily.
Ectotherms can insulate their bodies and can self-regulate their body temperature voluntarily and involuntarily.
Ectotherms cannot insulate their bodies and can only self-regulate their body temperature voluntarily.***
Endotherms cannot insulate their bodies and can only self-regulate their body temperature involuntarily.
Which activity uses ATP to raise body temperature?
shivering***
panting
storing fats
hibernating
3 answers
1 answer