1. What is the original source of energy in the food you eat?
A. Photosynthesis
B. Sun
C. Plans
D. Sugar
2. Why are leaves red in the fall?
A. Chlorophyll breaks down because there's less sunlight.
B. Mitochondria breaks down because there's less sunlight.
C. Chlorophyll absorbs red in the fall, rather than green
D. Chlorophyll reflects green light in the fall.
3. Which statement is true?
A. The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the thylakoid membrane.
B. The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.
C. The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the thylakoid membrane.
D. The Calvin cycle is the light-dependent (needs light) step of photosynthesis and happens in the stroma.
4. Which equation best models cellular respiration?
A. 6H2O + 6CO2 → C6H12O6 + 6O2 + Energy
B. C6H12O6 + 6O2 + 6CO2 → 6H2O + Energy
C. 6H2O + 6CO2 + Energy → C6H12O6 + 6O2
D. C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy
5. The following are steps of cellular respiration except
A. electron transport chain
B. glycolysis
C. electrolysis
D. the Krebs cycle
6. Which molecule provides the activation energy that is required to start glycolysis?
A. Water
B. Sugar
C. Carbon dioxide
D. ATP
7. Which compound is a reactant in cellular respiration?
A. Carbon dioxide
B. ATP
C. Oxygen
D. Water
8. Choose true or false
True
False
The Light Cycle occurs in the thylakoid
The "Dark Cycle" aka the Calvin Cycle must occur in the dark.
Plants release CO2 during photosynthesis
The Calvin Cycle occurs in the mitochondria
9. Photosynthesis occurs in the----- Cellular respiration occurs in the---
Golgi apparatus
Chloroplast
Ribosome
Mitochondria
10. Which of these would be considered an ectotherm?
A. Poor bear
B. Red tailed hawk
C. Lion
D. Rattlesnake
11. The first step of photosynthesis is the---- the second step of photosynthesis is called the---- Once glucose is created from sunlight, water, and carbon dioxide, the plant can then perform cellular respiration to obtain ATP (energy) needed to live. The steps of cellular respiration are (IN ORDER)-------,--------and -------
light cycle
Krebs cycle
Glycolysis
Calvin cycle
Electron transport chain (ETC)
12. Where does the Calvin cycle occur?
A. Mitochondria
B. Ribosomes
C. Stroma
D. Thylakoid
13. If 1,000 calories = 1 kcal, and 1 kcal = 1 Cal, how many Cal are in 500 calories?
A. 500 Cal
B. 2 Cal
C. 200 Cal .
D. O.5 Cal
A. 500 Cal
1. B. Sun
2. A. Chlorophyll breaks down because there's less sunlight.
3. B. The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.
4. D. C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy
5. C. Electrolysis
6. D. ATP
7. C. Oxygen
8. False: The Light Cycle occurs in the thylakoid. False: The "Dark Cycle" aka the Calvin Cycle does not have to occur in the dark. False: Plants do not release CO2 during photosynthesis. False: The Calvin Cycle does not occur in the mitochondria.
9. Chloroplast; Mitochondria
10. D. Rattlesnake
11. First step of photosynthesis: Light cycle; Second step of photosynthesis: Calvin cycle; Steps of cellular respiration (in order): Glycolysis, Krebs cycle, Electron transport chain (ETC)
12. C. Stroma
13. C. 200 Cal
1. The original source of energy in the food you eat is A. Photosynthesis. Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose, which serves as a source of energy for other organisms.
2. Leaves turn red in the fall because of A. Chlorophyll breaks down because there's less sunlight. Chlorophyll, the pigment responsible for the green color of leaves, breaks down as days become shorter and there is less sunlight. This allows other pigments, such as red and orange carotenoids, to become more visible.
3. The correct statement is B. The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma. The Calvin cycle is a series of chemical reactions that occur in the stroma of chloroplasts, the organelles where photosynthesis takes place. It does not directly require light and is responsible for converting carbon dioxide into glucose.
4. The equation that best models cellular respiration is D. C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy. Cellular respiration is the process by which cells break down glucose and release energy for various cellular activities. The equation represents the overall reaction of cellular respiration, where glucose and oxygen are converted into carbon dioxide, water, and energy in the form of ATP (adenosine triphosphate).
5. The step of electrolysis is not a step in cellular respiration. The correct answer is C. electrolysis. Electrolysis is not involved in cellular respiration. The steps of cellular respiration include glycolysis, the Krebs cycle, and the electron transport chain.
6. The molecule that provides the activation energy required to start glycolysis is D. ATP. Glycolysis is the first step of cellular respiration, and it requires an input of energy to get started. ATP (adenosine triphosphate) is a molecule that provides this initial energy.
7. The compound that is a reactant in cellular respiration is C. Oxygen. Cellular respiration is a process that requires oxygen as a reactant to break down glucose and produce energy in the form of ATP.
8. The statements regarding the Light Cycle occurring in the thylakoid (True), The "Dark Cycle" (Calvin Cycle) occurring in the dark (False), Plants releasing CO2 during photosynthesis (True), and The Calvin Cycle occurring in the mitochondria (False) are False.
9. Photosynthesis occurs in the B. Chloroplast, while cellular respiration occurs in the D. Mitochondria. Chloroplasts are the organelles in plant cells where photosynthesis takes place, while mitochondria are the organelles in both plant and animal cells where cellular respiration occurs.
10. An ectotherm is an organism that relies on external sources of heat to regulate their body temperature. The option that would be considered an ectotherm is D. Rattlesnake. Ectotherms are cold-blooded animals that cannot generate their own body heat and rely on the environment to regulate their temperature.
11. The first step of photosynthesis is the A. light cycle. The second step of photosynthesis is called the D. Calvin cycle. The steps of cellular respiration, in order, are: B. Glycolysis, C. Krebs cycle, and E. Electron transport chain (ETC).
12. The Calvin cycle occurs in the C. Stroma. The Calvin cycle, also known as the light-independent reactions, takes place in the stroma of the chloroplasts during photosynthesis. It is the process where carbon dioxide is converted into glucose.
13. If 1,000 calories = 1 kcal, and 1 kcal = 1 Cal, then 500 calories would be equivalent to C. 200 Cal. 1 kcal is equal to 1 Cal, so dividing 500 calories by 1,000 would give us 0.5 kcal, which is then equal to 0.5 Cal or 200 calories.