Q: Which of the following best represents the formula for photosynthesis?

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2O + \text{light energy} \rightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2$$

Question 1

Which of the following best describes the overall chemical equation for cellular respiration?

Accepted Answer

$$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2 ightarrow 6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2O + 	ext{ATP}$$

Question 2

Where does the Citric Acid Cycle (Krebs Cycle) occur within a eukaryotic cell?

Accepted Answer

Mitochondrial matrix

Question 3

Which process directly produces the most ATP during cellular respiration?

Accepted Answer

Oxidative phosphorylation (ETC and chemiosmosis)

Question 4

In a lab experiment, pinto beans are placed in a sealed container and the CO$$_2$$ concentration is measured over time. What does an increase in CO$$_2$$ indicate about the metabolic activity of the beans?

Accepted Answer

The beans are undergoing cellular respiration

Question 5

Which of the following is a correct description of the relationship between cellular respiration and photosynthesis?

Accepted Answer

Photosynthesis stores energy in glucose, while cellular respiration releases energy from glucose

Question 6

Which pigment is primarily responsible for absorbing light energy during photosynthesis?

Accepted Answer

Chlorophyll a

Question 7

A student uses chromatography to separate pigments from a spinach leaf. Which pigment would you expect to travel the farthest up the chromatography paper?

Accepted Answer

Carotenoids

Question 8

Which of the following best represents the formula for photosynthesis?

Accepted Answer

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2O + 	ext{light energy} ightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2$$

Question 9

Which step of cellular respiration occurs in the cytosol and produces a net gain of 2 ATP and 2 NADH per glucose molecule?

Accepted Answer

Glycolysis

Question 10

During the light reactions of photosynthesis, what is the primary function of water?

Accepted Answer

To provide electrons to the electron transport chain

Question 11

A plant is exposed only to green light. What is the most likely effect on the rate of photosynthesis?

Accepted Answer

The rate will decrease

Question 12

Which of the following best explains why phenol red turns yellow in the presence of CO$$_2$$?

Accepted Answer

CO$$_2$$ decreases the pH, making the solution more acidic

Question 13

Which of the following is a product of the Calvin Cycle?

Accepted Answer

Glucose

Question 14

If a mutation prevents the formation of NADH during glycolysis, which process would be directly affected?

Accepted Answer

The electron transport chain

Question 15

Which of the following best describes the role of accessory pigments in photosynthesis?

Accepted Answer

They absorb light energy at wavelengths not absorbed by chlorophyll a

Question 16

A student calculates the $$R_f$$ value for a pigment in a chromatography experiment. If the pigment moved 2.5 cm and the solvent front moved 5.0 cm, what is the $$R_f$$ value?

Accepted Answer

$$R_f = 0.5$$

Question 17

Which of the following is NOT a product of the Citric Acid Cycle per glucose molecule?

Accepted Answer

6 O$$_2$$

Question 18

Which part of the mitochondrion is the site of the electron transport chain?

Accepted Answer

Inner membrane

Question 19

Which of the following wavelengths of light is LEAST effective for driving photosynthesis?

Accepted Answer

550 nm (green)

Question 20

In the experiment measuring CO$$_2$$ and O$$_2$$ with pinto beans, what would you expect to happen to O$$_2$$ levels if the beans were boiled before the experiment?

Accepted Answer

O$$_2$$ levels would remain constant

Cellular Respiration and Photosynthesis: Core Concepts and Laboratory Applications

Study Guide - Practice Questions

Study Guide - Flashcards