Why are leaves red in the fall?(1 point) Responses Chlorophyll absorbs red in the fall, rather than green. Chlorophyll absorbs red in the fall, rather than green. Mitochondria break down because there's less sunlight. Mitochondria break down because there's less sunlight. Chlorophyll reflects green light in the fall. Chlorophyll reflects green light in the fall. Chlorophyll breaks down because there's less sunlight. Chlorophyll breaks down because there's less sunlight. Question 3 Which statement is true?(1 point) Responses The Calvin cycle is the light-dependent (does not need light) step of photosynthesis and happens in the stroma. The Calvin cycle is the light-dependent (does not need light) step of photosynthesis and happens in the stroma. The Calvin cycle is the light-dependent (does not need light) step of photosynthesis and happens in the thylakoid membrane. The Calvin cycle is the light-dependent (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-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 stroma. The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma. Question 4 The original energy for photosynthesis to begin comes from __. (1 point) Responses carbon dioxide molecules carbon dioxide molecules light light ATP ATP water molecules water molecules Question 5 Which equation best models cellular respiration?(1 point) Responses 6H2O 6 2 + 6CO2 6 2 + Energy → C6H12O6 6 12 6 + 6O2 6 2 6 cap h sub 2 cap o + 6 cap c cap o sub 2 + Energy → cap c sub 6 cap h sub 12 cap o sub 6 + 6 cap o sub 2 C6H12O6 6 12 6 + 6O2 6 2 + 6CO2 6 2 → 6H2O 6 2 + Energy cap c sub 6 cap h sub 12 cap o sub 6 + 6 cap o sub 2 + 6 cap c cap o sub 2 → 6 cap h sub 2 cap o + Energy C6H12O6 6 12 6 + 6O2 6 2 → 6H2O 6 2 + 6CO2 6 2 + Energy cap c sub 6 cap h sub 12 cap o sub 6 + 6 cap o sub 2 → 6 cap h sub 2 cap o + 6 cap c cap o sub 2 + Energy 6H2O 6 2 + 6CO2 6 2 → 6O2 6 2 C6H12O6 6 12 6 + Energy 6 cap h sub 2 cap o+ 6 cap c cap o sub 2 → 6 cap o sub 2 cap c sub 6 cap h sub 12 cap o sub 6 + Energy Question 6 Lactic acid fermentation can be modeled by which equation?(1 point) Responses Lactic acid + NADH → Pyruvic acid + NAD+ + Lactic acid + NADH → Pyruvic acid + cap n cap A cap d raised to the plus power Pyruvic acid + NAD+ + → Lactic acid + NADH Pyruvic acid + cap n cap A cap d raised to the plus power → Lactic acid + NADH Lactic acid + NAD+ + → Pyruvic acid + NADH Lactic acid + cap n cap A cap d raised to the plus power → Pyruvic acid + NADH Pyruvic acid + NADH → Lactic acid + NAD+ + Pyruvic acid + NADH → Lactic acid + cap n cap A cap d raised to the plus power Question 7 In the Krebs cycle, how is citric acid formed?(1 point) Responses Pyruvic acid molecules are broken down by an acetyl group. Pyruvic acid molecules are broken down by an acetyl group. Enzymes combine hydrogen ions, oxygen and electrons. Enzymes combine hydrogen ions, oxygen and electrons. Acetyl-CoA joins with a large molecule called oxaloacetic acid. Acetyl-CoA joins with a large molecule called oxaloacetic acid. Carbon dioxide bonds with a chain of coenzyme A. Carbon dioxide bonds with a chain of coenzyme A. Question 8 The following are steps of cellular respiration except:(1 point) Responses the Krebs cycle the Krebs cycle electrolysis electrolysis electron transport chain electron transport chain glycolysis glycolysis Question 9 Which molecule provides the activation energy that starts glycolysis? (1 point) Responses water water sugar sugar ATP ATP carbon dioxide carbon dioxide Question 10 During which phase of cellular respiration is a carbon dioxide released?(1 point) Responses Krebs cycle Krebs cycle glycolysis glycolysis digestion digestion electron transport chain electron transport chain Question 11 Which compound is a reactant in cellular respiration?(1 point) Responses water water oxygen oxygen carbon dioxide carbon dioxide ATP ATP Question 12 How many O2 2 molecules are required for two glucose molecules to undergo cellular respiration?(1 point) Responses 12 12 2 2 18 18 6 6 Question 13 Which statement is true?(1 point) Responses Endotherms can insulate (stop heat loss from) their bodies but can only control their body temperature by choice. Endotherms can insulate (stop heat loss from) their bodies but can only control their body temperature by choice. Ectotherms can insulate (stop heat loss from) their bodies and can control their body temperature by choice. Ectotherms can insulate (stop heat loss from) their bodies and can control their body temperature by choice. Ectotherms cannot insulate (stop heat loss from) their bodies and can only control their body temperature by choice. Ectotherms cannot insulate (stop heat loss from) their bodies and can only control their body temperature by choice. Endotherms cannot insulate (stop heat loss from) their bodies and can only control their body temperature involuntarily. Endotherms cannot insulate (stop heat loss from) their bodies and can only control their body temperature involuntarily. Question 14 Which activity uses ATP to raise body temperature?(1 point) Responses hibernating hibernating shivering shivering panting panting storing fats storing fats Question 15 Suppose cellular respiration occurs inside an insulated, sealed container. How does the container’s weight change during the reaction?(1 point) Responses does not increase or decrease does not increase or decrease increases, then decreases increases, then decreases decreases decreases increases increases Question 16 What is the correct order of steps for cellular respiration?(1 point) Responses electron transport chain → glycolysis → Krebs cycle electron transport chain → glycolysis → Krebs cycle glycolysis → electron transport chain → Krebs cycle glycolysis → electron transport chain → Krebs cycle glycolysis → Krebs cycle → electron transport chain glycolysis → Krebs cycle → electron transport chain Krebs cycle → glycolysis → electron transport chain Krebs cycle → glycolysis → electron transport chain Question 17 Bats shiver when they are cold and sweat when they are too hot to keep a consistent internal body temperature. Bats are ___. (1 point) Responses endoplasmic reticulum endoplasmic reticulum ectoplasm ectoplasm ectotherms ectotherms endotherms endotherms Question 18 Photosynthesis causes the amount of carbon dioxide to change depending on the season. What would be true for the Northern hemisphere (where we live)?(3 points) Responses Carbon dioxide in the atmosphere would be highest in the fall and lowest in early spring because photosynthesis takes carbon dioxide out of the atmosphere. Carbon dioxide in the atmosphere would be highest in the fall and lowest in early spring because photosynthesis takes carbon dioxide out of the atmosphere. Carbon dioxide in the atmosphere would be highest in early spring and lowest in the fall because photosynthesis puts carbon dioxide into the atmosphere. Carbon dioxide in the atmosphere would be highest in early spring and lowest in the fall because photosynthesis puts carbon dioxide into the atmosphere. Carbon dioxide in the atmosphere would be highest in early spring and lowest in the fall because photosynthesis takes carbon dioxide out of the atmosphere. Carbon dioxide in the atmosphere would be highest in early spring and lowest in the fall because photosynthesis takes carbon dioxide out of the atmosphere. Carbon dioxide in the atmosphere would be highest in the fall and lowest in early spring because photosynthesis releases carbon dioxide into the atmosphere. Carbon dioxide in the atmosphere would be highest in the fall and lowest in early spring because photosynthesis releases carbon dioxide into the atmosphere. Question 19 An orchid growing in a rain forest and a cactus growing in a desert live in different environments. Which statement is the best explanation of the different factors that would affect the two plants?(3 points) Responses An orchid growing in a rain forest would have more oxygen, so it could grow slower than a cactus growing in a desert. An orchid growing in a rain forest would have more oxygen, so it could grow slower than a cactus growing in a desert. A cactus growing in a desert would have less sunlight, so it could grow faster than an orchid growing in a rain forest. A cactus growing in a desert would have less sunlight, so it could grow faster than an orchid growing in a rain forest. An orchid growing in a rain forest would have more water, so it could grow faster than a cactus growing in a desert. An orchid growing in a rain forest would have more water, so it could grow faster than a cactus growing in a desert. A cactus growing in a desert would have more carbon dioxide, so it could grow faster than an orchid growing in a rain forest. A cactus growing in a desert would have more carbon dioxide, so it could grow faster than an orchid growing in a rain forest. Question 20 Which statement is true about what happens to glucose during cellular respiration?(3 points) Responses Glucose is broken apart and energy is released during cellular respiration. Glucose is broken apart and energy is released during cellular respiration. Glucose is a product of cellular respiration and energy is stored when it is made. Glucose is a product of cellular respiration and energy is stored when it is made. Glucose is a product of cellular respiration and energy is released when it is made. Glucose is a product of cellular respiration and energy is released when it is made. Glucose is broken apart and energy is stored during cellular respiration. Glucose is broken apart and energy is stored during cellular respiration. Question 21 Which statement best explains why dragonflies stand on branches with their head down and abdomen in the air when it is hot during the summer? (3 points) Responses Dragonflies are endotherms, so they can't sweat to control their body temperature. Dragonflies are endotherms, so they can't sweat to control their body temperature. Dragonflies are ectotherms, so they can't sweat to control their body temperature. Dragonflies are ectotherms, so they can't sweat to control their body temperature. Dragonflies are endotherms, so they store energy in layers of fat and can control their body temperature. Dragonflies are endotherms, so they store energy in layers of fat and can control their body temperature. Dragonflies are ectotherms, so they store energy in layers of fat and can control their body temperature. Dragonflies are ectotherms, so they store energy in layers of fat and can control their body temperature. Skip to navigation PreviousRevi
