Question

graphical representation of cellular respiration
nadh
cellular respiration
nadh
nadh
and
fadh,
glucose → pyruvate
preparatory
reaction
krebs
cycle
occurs in the

Explanation:

Step1: Identify the process before pyruvate

The first blank (above "Occurs in the ____") is related to the process that breaks down glucose into pyruvate. This is glycolysis. Glycolysis occurs in the cytoplasm (so the "Occurs in the ____" is cytoplasm).

Step2: Identify the process for the preparatory reaction input

The preparatory reaction (link reaction) takes pyruvate and converts it, but before that, the process that produces pyruvate from glucose is glycolysis, and the input for preparatory reaction (after glycolysis) - wait, no, the preparatory reaction's input is pyruvate, but the blank before preparatory reaction (the one with the arrow up) - actually, the preparatory reaction (link reaction) occurs in the mitochondrial matrix, but the blank below the preparatory reaction arrow: no, let's re - look. Wait, the first big blank on the left (above "Occurs in the ____") is glycolysis. Then "Occurs in the ____" for glycolysis is cytoplasm. Then the blank below the preparatory reaction (the arrow coming up to preparatory reaction) - no, maybe the labels:

1. The leftmost blank (above "Occurs in the ____"): Glycolysis (process that converts glucose to pyruvate).
2. "Occurs in the ____" for glycolysis: Cytoplasm.
3. The blank below the preparatory reaction (arrow pointing up to preparatory reaction) - no, the preparatory reaction (link reaction) converts pyruvate to acetyl - CoA, but the input for preparatory reaction is pyruvate, but the blank with the arrow up to preparatory reaction: maybe it's about the product? No, let's focus on the standard cellular respiration steps:

- Glycolysis: Glucose → Pyruvate, occurs in cytoplasm.
- Preparatory reaction (Link reaction): Pyruvate → Acetyl - CoA, occurs in mitochondrial matrix (but the blank with arrow up to preparatory reaction - maybe it's the location? No, the arrow is pointing to preparatory reaction, maybe the input? No, pyruvate is the input. Wait, maybe the labels are:

Left blank (process): Glycolysis

"Occurs in the ____": Cytoplasm

Blank below preparatory reaction (arrow up): maybe it's the location of preparatory reaction? No, preparatory reaction is in mitochondrial matrix. Wait, the diagram has:

- Glucose → [Glycolysis] → Pyruvate, occurs in cytoplasm (so the first blank is Glycolysis, the "Occurs in the ____" is cytoplasm)

- Preparatory reaction (Link reaction): Pyruvate → Acetyl - CoA, occurs in mitochondrial matrix (but the blank with arrow up to preparatory reaction - maybe it's the product? No, the arrow is pointing to preparatory reaction, so maybe it's the location? No, the preparatory reaction is in the mitochondrial matrix, but the arrow is coming from below. Wait, maybe the other blanks:

The big blank in the middle (below preparatory reaction, arrow up) - no, let's think of the standard cellular respiration flow:

Glycolysis (cytoplasm) → Pyruvate → Preparatory reaction (mitochondrial matrix) → Acetyl - CoA → Krebs cycle (mitochondrial matrix) → NADH/FADH₂ → Electron Transport Chain (ETC) (inner mitochondrial membrane)

So:

1. Leftmost blank (process): Glycolysis

2. "Occurs in the ____" (for glycolysis): Cytoplasm

3. The blank below preparatory reaction (arrow up) - maybe it's the location of preparatory reaction? No, the arrow is pointing to preparatory reaction, so maybe it's the product? No, pyruvate is the input. Wait, maybe the labels are:

- The left blank (above "Occurs in the ____"): Glycolysis

- "Occurs in the ____": Cytoplasm

- The blank with arrow up to preparatory reaction: maybe it's the location of preparatory reaction? No, preparatory reaction is in mitochondrial matrix. Wait, the ETC (Electron Transport Chain) is the last part, where NADH and FADH₂ donate electrons, and the products are ATP, H₂O. The Krebs cycle (Citric Acid Cycle) produces NADH, FADH₂, and CO₂.

So let's list the blanks:

1. Left blank (process): Glycolysis

2. "Occurs in the ____": Cytoplasm

3. Blank below preparatory reaction (arrow up): maybe it's the location of preparatory reaction? No, the preparatory reaction (link reaction) occurs in mitochondrial matrix, but the arrow is pointing to preparatory reaction, so maybe it's the input? No, pyruvate is the input. Wait, maybe the diagram has:

- Glycolysis (left blank)

- Occurs in cytoplasm (below glycolysis)

- Preparatory reaction: input is pyruvate, output is acetyl - CoA (but the blank with arrow up to preparatory reaction - maybe it's the location? No, the arrow is from below, so maybe it's the product? No.

Wait, maybe the key blanks:

- The left - most blank (the rectangle above "Occurs in the ____"): Glycolysis (the process that converts glucose to pyruvate)

- "Occurs in the ____" (below the left - most blank): Cytoplasm (where glycolysis occurs)

- The blank with the arrow pointing up to the "Preparatory reaction" rectangle: maybe it's the location of the preparatory reaction? No, preparatory reaction is in mitochondrial matrix. Wait, the ETC is the right - most big blank (where NADH and FADH₂ donate electrons), and the products of ETC are ATP and H₂O. The Krebs cycle produces CO₂, NADH, FADH₂, and ATP (a little).

Let's correct:

1. Left blank (process): Glycolysis

2. "Occurs in the ____" (for glycolysis): Cytoplasm

3. The blank below the "Preparatory reaction" (arrow up): maybe it's the location of the preparatory reaction? No, the preparatory reaction (link reaction) occurs in the mitochondrial matrix, so maybe that blank is "Mitochondrial matrix" (but the arrow is pointing to preparatory reaction, so maybe it's the location of preparatory reaction).

4. The blank in the Krebs cycle output (the small blank below Krebs cycle arrow): CO₂ (Krebs cycle produces CO₂)

5. The blank to the right of that (next small blank): ATP (Krebs cycle produces some ATP)

6. The big blank in the middle - right (where NADH and FADH₂ go): Electron Transport Chain (ETC)

7. The top - right blank (above ETC): ATP (product of ETC)

8. The blank below ETC (the other small blank): H₂O (product of ETC, from O₂ + electrons + protons)

But let's focus on the main ones:

- The left blank (process): Glycolysis

- "Occurs in the ____": Cytoplasm

- The blank with arrow up to preparatory reaction: Mitochondrial matrix (location of preparatory reaction)

- The small blank below Krebs cycle: CO₂

- The next small blank: ATP

- The big middle - right blank: Electron Transport Chain (ETC)

- The top - right blank: ATP

- The bottom - right small blank: H₂O

Answer:

• Leftmost blank (process): Glycolysis
• "Occurs in the ____": Cytoplasm
• Blank below preparatory reaction (location): Mitochondrial matrix
• Small blank below Krebs cycle: $\ce{CO_2}$
• Next small blank: ATP
• Big middle - right blank: Electron Transport Chain (ETC)
• Top - right blank: ATP
• Bottom - right small blank: $\ce{H_2O}$