Jaylah and Simon are in the same classes at school. In their Science class, they read the following passage.Plants and animals need to be able to use food in order to survive. One of the processes used to break down molecules from food is called cellular respiration. When cellular respiration takes place, the overall reaction is represented by this chemical equation: C6H12O6 + 6O2 → 6CO2 + 6H2O. The substances on the left, glucose (a type of sugar) and oxygen gas, are the reactants needed for cellular respiration to take place. The substances on the right, carbon dioxide and water, are the substances produced by the reaction. If either one of the reactants is not available, the reaction can't proceed. When cellular respiration happens, glucose is broken down; in addition, some of the energy is used in a related process, and the energy storage molecule called ATP is produced.After class, Jaylah and Simon were discussing what they learned.. Jaylah asked Simon the following question, "If oxygen is removed from a plant's environment, what would you expect to happen to the plant's ability to break down glucose sugar and produce the energy molecule of ATP?"6. What is the correct response that Simon should give Jaylah? Read all possible answer choices carefully.

Question

The plant's ability to break down glucose sugar and produce the energy molecule of ATP would not be affected because cellular respiration should occur normally.

The plant's ability to break down glucose sugar and produce the energy molecule of ATP would be affected because photosynthesis would not have a needed reactant to undergo all the chemical reactions.

The plant's ability to break down glucose sugar and produce the energy molecule of ATP would not be affected because photosynthesis should occur normally.

The plant's ability to break down glucose sugar and produce the energy molecule of ATP would be affected because cellular respiration would not have a needed reactant to undergo all the chemical reactions.

Answer 1

The correct response that Simon should give Jaylah is:

"The plant's ability to break down glucose sugar and produce the energy molecule of ATP would be affected because cellular respiration would not have a needed reactant to undergo all the chemical reactions."

This response accurately reflects that oxygen is a necessary reactant for cellular respiration, and without it, the process cannot proceed, which means the plant would struggle to break down glucose and produce ATP.

Answer 2

1A pigment is a substance that absorbs light of particular wavelengths. 2Plants contain multiple types of pigments, such as chlorophyll and carotenoids. 3If you see a leaf that is green or green-yellow in color, that is due to a pigment in the leaf called chlorophyll. 4Sunlight, which is categorized as "white" light, contains all of the colors of the spectrum. 5When it shines on the plant leaf, the chlorophyll absorbs some wavelengths and reflects other wavelengths. 6That is why you see specific colors. 7There are two different forms of chlorophyll (chlorophyll a and chlorophyll b), and they each absorb and reflect different ranges of wavelengths.8A spectrophotometer is an instrument that can be used to measure the amount of light absorbed by a pigment. 9The graph below shows the percent of light energy absorbed for the different light wavelengths. 10The highest peaks represent the colors that the chlorophyll absorbs the most; therefore, the highest peaks are the colors that are seen the least. 11The green line is for the chlorophyll a pigment. 12It tends to have a green or blue-green appearance. 13Chlorophyll a is the primary pigment used for photosynthesis.14The red line is for the chlorophyll b pigment. 15It tends to have a more yellow-green or olive green appearance. 16Chlorophyll b is a secondary pigment used for photosynthesis. 17Because it absorbs light in slightly different wavelengths, it increases the amount of useful light plants can employ when performing photosynthesis, especially in shaded areas.

1. Sentence number ______ explains that a spectrophotometer measures _______.

2. Why is chlorophyll b useful?

It is located in a different organelle.

It absorbs slightly different wavelengths than chlorophyll a.

It absorbs slightly different wavelengths than chlorophyll a.

It lasts for a longer time than chlorophyll a.

It lasts for a longer time than chlorophyll a.

It does exactly the same thing as chlorophyll a.

3. Which sentences tell you how chlorophyll a and chlorophyll b are different?

1 and 5

1 and 5

7 and 17

7 and 17

8 and 14

8 and 14

3 and 9

Answer 3

1. Sentence number 8 explains that a spectrophotometer measures the amount of light absorbed by a pigment.

2. Why is chlorophyll b useful?

It absorbs slightly different wavelengths than chlorophyll a.

(You listed this option twice, so there's just one correct answer.)

3. Which sentences tell you how chlorophyll a and chlorophyll b are different?

7 and 17

These sentences describe the differences in absorption and appearance between chlorophyll a and chlorophyll b.