The original source of energy in the food you eat is the sun. Through the process of photosynthesis, plants convert sunlight into chemical energy, which is then passed through the food chain.
What is the original source of energy in the food you eat?(1 point)
Responses
sun
sun
photosynthesis
photosynthesis
sugar
sugar
plants
plants
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11 answers
Why are leaves red in the fall?(1 point)
Responses
Chlorophyll breaks down because there's less sunlight.
Chlorophyll breaks down because there's less sunlight.
Mitochondria breaks down because there's less sunlight.
Mitochondria breaks down because there's less sunlight.
Chlorophyll reflects green light in the fall.
Chlorophyll reflects green light in the fall.
Chlorophyll absorbs red in the fall, rather than green.
Responses
Chlorophyll breaks down because there's less sunlight.
Chlorophyll breaks down because there's less sunlight.
Mitochondria breaks down because there's less sunlight.
Mitochondria breaks down because there's less sunlight.
Chlorophyll reflects green light in the fall.
Chlorophyll reflects green light in the fall.
Chlorophyll absorbs red in the fall, rather than green.
Leaves are red in the fall because chlorophyll breaks down because there's less sunlight. As chlorophyll fades, other pigments, such as anthocyanins, become more visible, giving leaves their red, orange, and yellow hues.
Which statement is true?(1 point)
Responses
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the stroma.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the stroma.
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Responses
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the thylakoid membrane.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the stroma.
The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the stroma.
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The true statement is: The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.
The original energy for photosynthesis to begin comes from:(1 point)
Responses
carbon dioxide molecules
carbon dioxide molecules
water molecules
water molecules
light
light
ATP
Responses
carbon dioxide molecules
carbon dioxide molecules
water molecules
water molecules
light
light
ATP
The original energy for photosynthesis to begin comes from light.
Which equation best models cellular respiration?(1 point)
Responses
6H2O + 6CO2 → C6H12O6 + 6O2 + Energy
6H 2 O + 6CO 2 → C 6 H 12 O 6 + 6O 2 + Energy
6H2O + 6CO2 + Energy → C6H12O6 + 6O2
6H 2 O + 6CO 2 + Energy → C 6 H 12 O 6 + 6O 2
C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy
C 6 H 12 O 6 + 6O 2 → 6H 2 O + 6CO 2 + Energy
C6H12O6 + 6O2 + 6CO2 → 6H2O + Energy
Responses
6H2O + 6CO2 → C6H12O6 + 6O2 + Energy
6H 2 O + 6CO 2 → C 6 H 12 O 6 + 6O 2 + Energy
6H2O + 6CO2 + Energy → C6H12O6 + 6O2
6H 2 O + 6CO 2 + Energy → C 6 H 12 O 6 + 6O 2
C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy
C 6 H 12 O 6 + 6O 2 → 6H 2 O + 6CO 2 + Energy
C6H12O6 + 6O2 + 6CO2 → 6H2O + Energy
The equation that best models cellular respiration is:
C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy.
This represents glucose and oxygen being converted into water, carbon dioxide, and energy (usually in the form of ATP).
Lactic acid fermentation can be modeled by which equation?(1 point)
Responses
Lactic acid + NADH → Pyruvic acid + NAD+
Lactic acid + NADH → Pyruvic acid + NAD+
Lactic acid + NADH → Pyruvic acid NADH
Lactic acid + NADH → Pyruvic acid NADH
Pyruvic acid + NADH → Lactic acid + NAD+
Pyruvic acid + NADH → Lactic acid + NAD+
Pyruvic acid + NAD+ → Lactic acid + NADH
Responses
Lactic acid + NADH → Pyruvic acid + NAD+
Lactic acid + NADH → Pyruvic acid + NAD+
Lactic acid + NADH → Pyruvic acid NADH
Lactic acid + NADH → Pyruvic acid NADH
Pyruvic acid + NADH → Lactic acid + NAD+
Pyruvic acid + NADH → Lactic acid + NAD+
Pyruvic acid + NAD+ → Lactic acid + NADH
Lactic acid fermentation can be modeled by the equation:
Pyruvic acid + NADH → Lactic acid + NAD+.
This represents the conversion of pyruvic acid into lactic acid with the reduction of NADH to NAD+.
31 answers