# Photosynthesis And Respiration: MCQ Quiz!

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Efleck
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Quizzes Created: 1 | Total Attempts: 128
Questions: 10 | Attempts: 129

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• 1.

### Respiration only occur in hetrotrophs?

• A.

True

• B.

False

B. False
Explanation
Respiration does not only occur in heterotrophs. It is a process that takes place in all living organisms, including autotrophs. Autotrophs, such as plants, also undergo respiration to generate energy from glucose. Therefore, the statement that respiration only occurs in heterotrophs is incorrect.

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• 2.

### 6CO2 + 6H2O ------->                     + 6O2                       SUNLIGHT

• A.

C12H6O2

• B.

C6H12O2

• C.

6CO2

• D.

6O6H12O

• E.

C6H12O6

E. C6H12O6
Explanation
The given equation represents the process of photosynthesis, where carbon dioxide (CO2) and water (H2O) are converted into glucose (C6H12O6) and oxygen (O2) in the presence of sunlight. Glucose is a simple sugar that serves as a source of energy for plants and other organisms. Therefore, the correct answer is C6H12O6.

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• 3.

### Glucose + oxygen ------->                        + Water

carbon dioxide, C6H12O6, 6O2, SUNLIGHT, 6CO2, 6H2O
Explanation
The given answer is the balanced chemical equation for the process of photosynthesis. In this process, glucose and oxygen are converted into carbon dioxide and water using sunlight as the energy source. The equation shows that 6 molecules of carbon dioxide, 6 molecules of water, and sunlight are required to produce 1 molecule of glucose and 6 molecules of oxygen. Therefore, the answer correctly represents the reactants and products involved in photosynthesis.

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• 4.

### Where does photosynthesis occur?

• A.

Stomata

• B.

Stem

• C.

Roots

• D.

Mitochondria

• E.

Chloroplasts

E. Chloroplasts
Explanation
Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose and oxygen. This process occurs in the chloroplasts, which are specialized organelles found in plant cells. Chloroplasts contain chlorophyll, a pigment that absorbs sunlight and initiates the conversion of light energy into chemical energy. The other options listed, such as stomata, stem, roots, and mitochondria, are not directly involved in the process of photosynthesis.

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• 5.

### Where does respiration occur?

• A.

Chloroplasts

• B.

Leaf

• C.

Animal

• D.

Mitochondria

• E.

Cytoplasm

D. Mitochondria
Explanation
Respiration occurs in the mitochondria. Mitochondria are known as the powerhouses of the cell because they are responsible for producing energy in the form of ATP through the process of cellular respiration. This process involves breaking down glucose and other molecules to release energy. The mitochondria have specialized enzymes and proteins that carry out the different steps of respiration, including glycolysis, the Krebs cycle, and the electron transport chain. Therefore, the correct answer is mitochondria.

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• 6.

### What is the 1st step of photosynthesis?

• A.

Making food

• B.

Storing glucose

• C.

Capturing the sun's energy

• D.

Making energy

• E.

Breaking down food

C. Capturing the sun's energy
Explanation
The first step of photosynthesis is capturing the sun's energy. This is done through the process of photosynthesis where plants use specialized pigments, such as chlorophyll, to absorb sunlight. This captured energy is then used to convert carbon dioxide and water into glucose and oxygen, which are essential for the plant's growth and survival.

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• 7.

### What would happen if all plants died?

• A.

We wouldn't have food

• B.

All animals would die

• C.

There would be no oxygen

• D.

All of the above

D. All of the above
Explanation
If all plants died, it would have several consequences. Firstly, we wouldn't have food because plants are the primary source of food for humans and animals. Secondly, all animals would die as they rely on plants either directly or indirectly for their survival. Lastly, there would be no oxygen as plants play a crucial role in producing oxygen through photosynthesis. Therefore, all of the given options would be true if all plants died.

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• 8.

### Glucose is sugar/ food made by autotrophs that they make by using the sun's

energy
Explanation
Autotrophs are organisms that can produce their own food through the process of photosynthesis, using sunlight as a source of energy. Glucose is a type of sugar that is produced during photosynthesis. Therefore, the correct answer is "energy" because autotrophs use the sun's energy to make glucose, which serves as their food.

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• 9.

### What are all the parts of an animal cell?

• A.

Mitochondria

• B.

Vacuoles

• C.

Cell wall

• D.

Nucleus

• E.

Chloroplasts

A. Mitochondria
B. Vacuoles
D. Nucleus
Explanation
The parts of an animal cell include mitochondria, vacuoles, and nucleus. Mitochondria are responsible for producing energy in the form of ATP. Vacuoles are storage compartments that store water, nutrients, and waste. The nucleus is the control center of the cell, containing the genetic material and regulating cell activities.

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• 10.

### Which are big 6 nutrients?

• A.

Protien

• B.

Fruits

• C.

Fat

• D.

Oils

• E.

Minerals

A. Protien
C. Fat
E. Minerals
Explanation
The correct answer is protein, fat, and minerals. These three nutrients are considered essential for the body's proper functioning and overall health. Protein is crucial for building and repairing tissues, while fat provides energy and helps absorb certain vitamins. Minerals, on the other hand, are necessary for various bodily functions, such as maintaining strong bones and regulating muscle contractions. Fruits and oils are not part of the big six nutrients, although they do offer other important vitamins and nutrients.

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• Jan 02, 2024
Quiz Edited by
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• Nov 18, 2009
Quiz Created by
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