Question 1

Which organelle is responsible for photosynthesis in plant cells, and what pigment does it contain to absorb light energy?

Accepted Answer

Chloroplast; chlorophyll

Question 2

What is the balanced chemical equation for photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow 6O_2 + C_6H_{12}O_6$

Question 3

During photosynthesis, which molecule is considered a waste product and is expelled through the stomata?

Accepted Answer

Oxygen

Question 4

Which structure on the underside of leaves regulates the exchange of gases such as CO$$_2$$ and O$$_2$$?

Accepted Answer

Stomata

Question 5

What are the reactants required for photosynthesis?

Accepted Answer

Water, carbon dioxide, and sunlight

Question 6

Which of the following best describes the relationship between photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis produces glucose and oxygen, which are used in cellular respiration

Question 7

What is the main product of cellular respiration that provides energy for cellular activities?

Accepted Answer

ATP (Adenosine Triphosphate)

Question 8

Which equation represents cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + 36ATP$$

Question 9

Which process occurs in the mitochondria and involves glycolysis, the Krebs cycle, and ATP synthase action?

Accepted Answer

Cellular respiration

Question 10

If a plant is placed in a sealed container with only sunlight and water, which gas will accumulate inside the container as a result of photosynthesis?

Accepted Answer

Oxygen

Question 11

Which factor does NOT directly affect the rate of photosynthesis according to the provided graph?

Accepted Answer

Wind speed

Question 12

Why does the rate of photosynthesis increase in the summer compared to winter?

Accepted Answer

Plants have more leaves to capture sunlight

Question 13

Which of the following is a waste product of cellular respiration in animals?

Accepted Answer

Carbon dioxide

Question 14

Matter and energy are cycled in photosynthesis and cellular respiration. Which law explains why the total amount of matter and energy remains constant?

Accepted Answer

Law of Conservation of Energy and Matter

Question 15

During intense exercise, the body switches from aerobic to anaerobic respiration. What is a likely consequence of this switch?

Accepted Answer

Accumulation of lactic acid in muscles

Question 16

Forests are often referred to as the 'lungs of the Earth.' What is the primary reason for this analogy?

Accepted Answer

Forests remove CO$$_2$$ from the air and release O$$_2$$

Question 17

Which molecule is broken down during glycolysis in cellular respiration?

Accepted Answer

Glucose

Question 18

If atmospheric CO$$_2$$ levels continue to rise due to human activities, what is a likely impact on the global carbon cycle?

Accepted Answer

Climate change will accelerate

Question 19

Which of the following is a correct description of the short-term carbon cycle?

Accepted Answer

Carbon flows between plants, animals, atmosphere, and soil

Question 20

A scientist wants to measure the effect of light intensity on photosynthesis. Which variable should be kept constant to ensure a fair experiment?

Accepted Answer

Amount of water

Photosynthesis and Cellular Respiration: The Flow of Energy in Living Systems

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