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
C. The product of photosynthesis are the reactants of respiration.
Explanation
The correct answer is "The product of photosynthesis are the reactants of respiration." This statement is true because during photosynthesis, plants produce glucose and oxygen as products. These products are then used as reactants during respiration, where glucose is broken down to release energy and oxygen is used to help in the process. Therefore, the products of photosynthesis (glucose and oxygen) are the reactants of respiration.
2.
What is the main difference between aerobic and anaerobic respiration?
Correct Answer
B. Aerobic uses oxygen, Anaerobic does not.
Explanation
Aerobic respiration refers to the process in which cells use oxygen to break down glucose and produce energy. On the other hand, anaerobic respiration occurs when cells break down glucose without the presence of oxygen. The main difference between the two is that aerobic respiration requires oxygen, while anaerobic respiration does not.
3.
Which of the following statements is most correct?
Correct Answer
B. Aerobic respiration occurs with oxygen and makes 36 ATP.
Explanation
Aerobic respiration is a metabolic process that occurs in the presence of oxygen. During this process, glucose is broken down to produce ATP, which is the energy currency of the cell. Aerobic respiration is more efficient than anaerobic respiration because it can produce a larger amount of ATP. The statement "Aerobic respiration occurs with oxygen and makes 36 ATP" is the most correct because it accurately describes the process and the amount of ATP produced.
4.
What products of photosynthesis and reactants for respiration belong in the box to complete the cycle?
Correct Answer
C. Glucose and oxygen
Explanation
During photosynthesis, plants use carbon dioxide and water to produce glucose and oxygen. Glucose is a sugar molecule that serves as a source of energy for the plant. Oxygen is released as a byproduct of photosynthesis. In respiration, glucose is broken down in the presence of oxygen to release energy for the plant's metabolic processes. Therefore, glucose and oxygen complete the cycle of 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
In bright sunlight, plants undergo photosynthesis, a process in which they convert carbon dioxide and water into glucose and oxygen. Oxygen is the gas given off by plants during photosynthesis. Therefore, the student would be collecting oxygen gas from the plant.
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, water, and carbon dioxide into oxygen and high-energy sugars and starches. Oxygen is produced as a byproduct of photosynthesis, which is released into the atmosphere. The high-energy sugars and starches, such as glucose, are stored by the plant for energy. This process is essential for the survival of plants and plays a crucial role in maintaining the balance of oxygen and carbon dioxide in the atmosphere.
7.
What does the Chloroplast do?
Correct Answer
B. Conduct photosynthesis
Explanation
Chloroplasts are responsible for conducting photosynthesis, a process in which they convert sunlight, water, and carbon dioxide into glucose and oxygen. This process is crucial for the production of energy and food for the plant. Chloroplasts contain chlorophyll, a pigment that captures sunlight and initiates the photosynthetic reaction. Therefore, the correct answer is conduct photosynthesis.
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 responsible for photosynthesis, the process by which plants convert sunlight into energy. They contain chlorophyll, a green pigment that captures light energy. Animal cells do not have chloroplasts because they do not undergo photosynthesis. Instead, animal cells obtain energy from food through cellular respiration.
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 using chloroplasts. Similarly, cellular respiration is the process by which cells convert energy from nutrients into a usable form. This process occurs in the mitochondria, which are known as the "powerhouses" of the cell. They generate ATP, the molecule that provides energy for cellular activities. Therefore, the correct answer is mitochondria.
10.
Which words are missing from the equation for photosynthesis?
carbon dioxide (CO2) + ________ + sunlight ---> sugar + __________
Correct Answer
C. Water, oxygen
Explanation
During photosynthesis, carbon dioxide (CO2) is combined with water and sunlight to produce sugar and oxygen. Water is necessary for the process as it provides the hydrogen atoms needed to form the sugar molecule. Oxygen is released as a byproduct of photosynthesis.
11.
The purpose of photosynthesis is to convert solar energy and CO2 to glucose for food
Correct Answer
A. True
Explanation
Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. Glucose is a type of sugar that serves as a source of energy for plants. Therefore, the purpose of photosynthesis is indeed to convert solar energy and CO2 into glucose, which is used as food for plants.
12.
Photosynthesis makes _____ gas, which we inhale to breathe with for cellular respiration to occur.
Correct Answer
C. Oxygen
Explanation
During photosynthesis, plants convert carbon dioxide and water into glucose and oxygen. Oxygen is released as a byproduct and is essential for cellular respiration to occur. In cellular respiration, oxygen is used by cells to break down glucose and produce energy in the form of ATP. Therefore, oxygen gas produced during photosynthesis is the correct answer as it is the gas we inhale to breathe and support cellular respiration.
13.
The green pigment in the chloroplast is called _________________.
Correct Answer
A. Chlorophyll
Explanation
Chlorophyll is the green pigment found in the chloroplasts of plants. It is responsible for capturing light energy during photosynthesis and converting it into chemical energy. Chlorophyll absorbs light in the red and blue regions of the electromagnetic spectrum, while reflecting green light, giving plants their characteristic green color. It plays a crucial role in the process of photosynthesis by allowing plants to convert sunlight into glucose, which is used as a source of energy for growth and development.
14.
In cellular respiration what is the correct equation
(click all that apply)
Correct Answer
A. 6O2+c6H12O6->6CO2+6H2O+energy
Explanation
The correct equation for cellular respiration is 6O2+c6H12O6->6CO2+6H2O+energy. This equation represents the process of breaking down glucose (C6H12O6) and oxygen (O2) to produce carbon dioxide (CO2), water (H2O), and energy. This equation shows the balanced stoichiometry of the reactants and products involved in cellular respiration.
15.
Which is the correct equation for photosynthesis?
(click all that apply)
Correct Answer(s)
A. CO2+H2O -> C6H12O6+O2
C. CO2+H2O -> C6H12O6+O2
Explanation
The correct equation for photosynthesis is CO2+H2O -> C6H12O6+O2. This equation represents the process of photosynthesis, where carbon dioxide (CO2) and water (H2O) combine with the help of sunlight to produce glucose (C6H12O6) and oxygen (O2). This equation is a simplified representation of the overall process of photosynthesis, which occurs in plants and some microorganisms, and is essential for the production of oxygen and energy-rich molecules.
16.
Cellular respiration occurs in which cell type?
(click all that apply)
Correct Answer(s)
A. Plant
B. Animal
Explanation
Cellular respiration is the process by which cells convert glucose and oxygen into carbon dioxide, water, and energy in the form of ATP. This process occurs in both plant and animal cells. Plant cells carry out cellular respiration in their mitochondria, just like animal cells. However, rocks do not have cells and therefore cannot carry out cellular respiration.
17.
Cellular respiration energy can be released by breaking down which molecule?
Correct Answer
A. Glucose
Explanation
Glucose is the correct answer because it is the molecule that is broken down during cellular respiration to release energy. This process occurs in the mitochondria of cells and involves a series of chemical reactions that convert glucose into ATP (adenosine triphosphate), the main energy currency of cells. Through the breakdown of glucose, cells are able to produce ATP, which is used for various cellular processes and functions.
18.
Cellular aerobic respiration takes place in the presence of _______
Correct Answer
oxygen
Explanation
Cellular aerobic respiration is a metabolic process that occurs in the presence of oxygen. During this process, cells break down glucose molecules to produce energy in the form of ATP. Oxygen acts as the final electron acceptor in the electron transport chain, which is a critical step in aerobic respiration. Without oxygen, cells would not be able to efficiently generate ATP through aerobic respiration and would instead rely on anaerobic processes, such as fermentation, which produce less energy. Therefore, the presence of oxygen is essential for cellular aerobic respiration.
19.
Many plants in the room will decrease the level of ________ from the air, but increase the level of _____________.
Correct Answer
A. Carbon dioxide, oxygen
Explanation
Plants perform photosynthesis, a process in which they take in carbon dioxide and release oxygen. Therefore, having many plants in a room will decrease the level of carbon dioxide from the air and increase the level of oxygen.
20.
Cellular respiration occurs in what organelle?
Correct Answer
mitochondria
Explanation
Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water. This energy is produced in the form of ATP, which is the main energy currency of cells. Mitochondria are the organelles responsible for carrying out cellular respiration. They have an inner and outer membrane, and contain enzymes and proteins necessary for the different stages of respiration, such as glycolysis, the Krebs cycle, and oxidative phosphorylation. Therefore, the correct answer is mitochondria.
21.
Anaerobic respiration occurs without oxygen and makes how many ATP?
Correct Answer
2
Explanation
Anaerobic respiration is a metabolic process that occurs in the absence of oxygen. During anaerobic respiration, glucose is broken down to produce energy in the form of ATP. However, since this process does not involve the electron transport chain, which is dependent on oxygen, the amount of ATP produced is limited. In anaerobic respiration, only a net gain of 2 ATP molecules is produced per glucose molecule. Therefore, the correct answer is 2.