Q: The eighth image shows the overall equation for photosynthesis. Which of the following correctly represents the balanced equation for photosynthesis?

$$6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{light energy} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2$$

Q: The ninth image shows the overall equation for cellular respiration. Which of the following correctly represents the balanced equation for cellular respiration?

$$\text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2 \rightarrow 6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{ATP} + \text{Heat}$$

Question 1

Which process is illustrated by the first image, showing a car and a cell both converting fuel into energy, and what is a key similarity between these two processes?

Accepted Answer

Cellular respiration; both processes convert chemical energy in fuel into usable energy and release heat as a byproduct.

Question 2

In the second image, the energy diagram shows a large drop in free energy from reactants to products. What type of reaction does this represent, and what is the significance of the yellow starburst?

Accepted Answer

Exergonic reaction; the starburst represents energy released during the reaction.

Question 3

The third image shows an energy diagram with a higher energy product than reactant. What does this indicate about the reaction, and what is required for it to proceed?

Accepted Answer

It is an endergonic reaction; it requires an input of energy to proceed.

Question 4

The fourth image depicts a chain of molecules with a blue oval (enzyme) facilitating a reaction. What is the role of the enzyme in this process?

Accepted Answer

The enzyme lowers the activation energy, speeding up the reaction without being consumed.

Question 5

The fifth image shows three types of cellular work powered by ATP. Which of the following is NOT a type of work powered by ATP in cells?

Accepted Answer

Thermal work, such as maintaining body temperature directly.

Question 6

The sixth image illustrates the ATP cycle. Which part of the cycle is exergonic, and what does this mean for the cell?

Accepted Answer

ATP hydrolysis; it releases energy that can be used to drive endergonic reactions.

Question 7

The seventh image shows two graphs of Gibbs free energy. Which graph represents an exergonic reaction, and what is the value of $$\Delta G$$?

Accepted Answer

The right graph; $$\Delta G \u003c 0$$

Question 8

The eighth image shows the overall equation for photosynthesis. Which of the following correctly represents the balanced equation for photosynthesis?

Accepted Answer

$$6 	ext{CO}_2 + 6 	ext{H}_2	ext{O} + 	ext{light energy} ightarrow 	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6 	ext{O}_2$$

Question 9

The ninth image shows the overall equation for cellular respiration. Which of the following correctly represents the balanced equation for cellular respiration?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6 	ext{O}_2 ightarrow 6 	ext{CO}_2 + 6 	ext{H}_2	ext{O} + 	ext{ATP} + 	ext{Heat}$$

Question 10

The tenth image shows the cycling of energy between chloroplasts and mitochondria. What is the main relationship between these two organelles in plant cells?

Accepted Answer

Chloroplasts convert light energy to chemical energy, and mitochondria convert chemical energy to ATP.

Question 11

The eleventh image shows a runner and a diagram of gas exchange. What is the primary role of the lungs in cellular respiration?

Accepted Answer

To supply oxygen for cellular respiration and remove carbon dioxide produced by cells.

Question 12

The twelfth image shows energy expenditure for various activities. Why does running consume more calories per hour than sitting or walking?

Accepted Answer

Running requires more muscle contractions, increasing the rate of cellular respiration and energy expenditure.

Question 13

The thirteenth image shows the three main stages of cellular respiration. Which stage produces the most ATP, and where does it occur?

Accepted Answer

Oxidative phosphorylation; inner mitochondrial membrane

Question 14

The fourteenth image shows the process of glycolysis. What are the net products of glycolysis per molecule of glucose?

Accepted Answer

2 ATP, 2 NADH, and 2 pyruvate

Question 15

The fifteenth image shows NADH donating electrons to the electron transport chain. What is the final electron acceptor in the electron transport chain of cellular respiration?

Accepted Answer

Oxygen ($$	ext{O}_2)$$

Question 16

The sixteenth image shows the process of oxidative phosphorylation. What is the main function of ATP synthase in this process?

Accepted Answer

To use the energy of the proton gradient to synthesize ATP from ADP and $$	ext{P}_i$$

Cellular Energy Transformations and Cellular Respiration

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