Westonci.ca is the Q&A platform that connects you with experts who provide accurate and detailed answers. Experience the convenience of finding accurate answers to your questions from knowledgeable professionals on our platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

Which substance is represented by [tex]\( X \)[/tex] in the word equation below?

glucose [tex]\( + X \rightarrow \)[/tex] enzymes [tex]\( \rightarrow \)[/tex] water + carbon dioxide + ATP

1. alcohol
2. chlorophyll
3. oxygen
4. lactic acid


Sagot :

To determine which substance is represented by [tex]\(X\)[/tex] in the word equation:

[tex]\[ \text{glucose} + X \rightarrow \text{enzymes} \rightarrow \text{water} + \text{carbon dioxide} + \text{ATP} \][/tex]

we need to analyze the equation and understand the biological process it represents.

### Step-by-Step Solution:

1. Identify the process:
- The equation involves glucose reacting with a substance [tex]\(X\)[/tex] in the presence of enzymes to produce water, carbon dioxide, and ATP (adenosine triphosphate).
- This set of products is characteristic of cellular respiration, a process that generates energy for cells.

2. Understand Cellular Respiration:
- Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), water, and carbon dioxide.
- The general chemical equation for cellular respiration can be represented as:
[tex]\[ \text{glucose} + \text{oxygen} \rightarrow \text{water} + \text{carbon dioxide} + \text{ATP} \][/tex]

3. Substitute the known details:
- Given the equation in the problem, glucose is a reactant.
- The products (water, carbon dioxide, and ATP) are consistent with what cellular respiration produces.

4. Determine [tex]\(X\)[/tex]:
- In the context of cellular respiration, the missing reactant [tex]\(X\)[/tex] must be oxygen because oxygen is essential for breaking down glucose during this process.

5. Match the choices with the substance:
- Let's review the choices provided:
1. Alcohol
2. Chlorophyll
3. Oxygen
4. Lactic acid
- Cellular respiration specifically requires oxygen. Therefore, the correct answer must be oxygen.

Therefore, the substance represented by [tex]\(X\)[/tex] in the word equation is oxygen.

The correct choice is:
3) oxygen