1.
Plants and animals exchange materials through the processes of photosynthesis and respiration. Which of these statements is true about the way these two processes are related?
Correct Answer
D. The product of pHotosynthesis are the reactants of respiration.
Explanation
The correct answer is "The product of photosynthesis are the reactants of respiration." This means that the oxygen produced during photosynthesis is used as a reactant in the process of respiration, while the carbon dioxide produced during respiration is used as a reactant in the process of photosynthesis. This shows a reciprocal relationship between the two processes, where the products of one process serve as the reactants of the other process.
2.
What is the main difference between aerobic and anaerobic respiration?
Correct Answer
C. Aerobic uses oxygen, Anaerobic does not.
Explanation
The main difference between aerobic and anaerobic respiration is that aerobic respiration requires the presence of oxygen, while anaerobic respiration does not. Aerobic respiration is a more efficient process and produces a higher amount of ATP (energy) compared to anaerobic respiration.
3.
Which of the following statements is most correct?
Correct Answer
B. Aerobic respiration occurs with oxygen and makes 36 ATP.
4.
What products of photosynthesis and reactants for respiration belong in the box to complete the cycle?
Correct Answer
D. Glucose and oxygen
Explanation
Glucose and oxygen are the products of photosynthesis and the reactants for respiration. During photosynthesis, plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. Glucose is then used as a source of energy during cellular respiration, where it is broken down to release energy in the form of ATP. Oxygen is also required for cellular respiration, as it acts as the final electron acceptor in the electron transport chain. Therefore, glucose and oxygen complete the cycle between photosynthesis and respiration.
5.
A student is collecting the gas given off from a plant in bright sunlight at a temperature at 27c. Which gas would the student be collecting?
Correct Answer
C. Oxygen
Explanation
The student would be collecting oxygen gas. In the process of photosynthesis, plants produce oxygen as a byproduct. Bright sunlight and a temperature of 27°C are favorable conditions for photosynthesis to occur, leading to the release of oxygen gas.
6.
Photosynthesis uses sunlight to convert water and carbon dioxide into:
Correct Answer
D. Oxygen and high- energy sugars and starches
Explanation
Photosynthesis is the process by which plants convert sunlight into energy. In this process, water and carbon dioxide are combined to produce oxygen and high-energy sugars and starches. The oxygen is released into the atmosphere as a byproduct, while the sugars and starches are stored as energy for the plant to use. Therefore, the correct answer is "Oxygen and high-energy sugars and starches."
7.
What does the Chloroplast do?
Correct Answer
B. Moves the energy into the cell
Explanation
The chloroplast is responsible for converting light energy into chemical energy through the process of photosynthesis. This energy is then used by the cell for various cellular activities such as growth, reproduction, and metabolism. Therefore, the chloroplast moves the energy into the cell, making it the correct answer.
8.
What is found in a plant cell but not in an animal cell?
Correct Answer
C. Chloroplasts
Explanation
Chloroplasts are found in plant cells but not in animal cells. Chloroplasts are specialized organelles that are responsible for photosynthesis, the process by which plants convert sunlight into energy. They contain a pigment called chlorophyll, which gives plants their green color. Chloroplasts are not present in animal cells because animals do not carry out photosynthesis. Instead, animals obtain energy through other means, such as consuming plants or other animals. Therefore, the presence of chloroplasts is a characteristic feature of plant cells.
9.
Photosynthesis is to chloroplasts as cellular respiration is to:
Correct Answer
C. Mitochondria
Explanation
Photosynthesis is the process by which plants convert sunlight into energy, and it occurs in chloroplasts. Similarly, cellular respiration is the process by which cells convert energy stored in glucose into usable energy, and it occurs in mitochondria. Both chloroplasts and mitochondria are organelles involved in energy conversion in cells. Therefore, the correct answer is mitochondria.