Cellular Respiration Crossword Puzzle by Melissa Eggers Across 1. The word that means requires oxygen 2. How many ATP are produced during Electron Transport? 3. What did Hans Krebs discover? 4. When oxygen is not present, it is known as . 5. Where does the Krebs Cycle take place? 6. Nobel Prize for their . 7. What does ATP stand for? 8. What is the first stage of cellular respiration? 9. What is fermentation called in muscle cells? 10. How many ATP are produced during the Krebs Cycle? 11. What energy currency is used by all cells? 12. What is the third stage of cellular respiration? 13. Glucose _ molecules. 14. Acid and . Down 1. What does ATP supply you with? 2. Where does cellular respiration take place? (Both answers) 3. During what process is ATP made in? 4. What occurs when oxygen is not present? 5. Where does glycolysis take place? 6. What are the folds called in mitochondria? 7. The space inside the cristae is called
The Correct Answer and Explanation is:
Based on the provided cellular respiration crossword puzzle, here are the correct answers.
Across
- AEROBIC
- THIRTYFOUR
- CITRICACID
- ANAEROBIC
- MITOCHONDRIA
- HANSKREBS
- ADENOSINETRIPHOSPHATE
- GLYCOLYSIS
- LACTICACID
- TWO
- ATP
- ELECTRONTRANSPORT
- ATP (Note: This answer fits the clue but not the six-letter grid space, indicating an error in the puzzle’s design.)
Down
2. ENERGY
3. CYTOPLASMMITOCHONDRIA
5. RESPIRATION
7. FERMENTATION
9. CYTOPLASM
10. CRISTAE
17. MATRIX (Note: This correct biological answer conflicts with the letters from intersecting clues, indicating a structural flaw in the puzzle.)
Explanation
This crossword puzzle covers the fundamental concepts of cellular respiration, the process by which organisms convert biochemical energy from nutrients into adenosine triphosphate (ATP), the universal energy currency of all cells.
The answers reflect the three main stages of this process. The first stage, GLYCOLYSIS (14 Across), occurs in the CYTOPLASM (9 Down) and splits one glucose molecule into two molecules of pyruvic acid, producing a net gain of two ATP (16 and 18 Across). This process is ANAEROBIC (8 Across), meaning it does not require oxygen. When oxygen is absent, cells can undergo FERMENTATION (7 Down), such as the LACTICACID (15 Across) fermentation that occurs in muscle cells.
When oxygen is present, AEROBIC (1 Across) respiration proceeds. The second stage, discovered by HANSKREBS (12 Across), is the Krebs Cycle, also known as the CITRICACID (6 Across) cycle. This stage takes place inside the MITOCHONDRIA (11 Across). The third and final stage is the ELECTRONTRANSPORT chain (19 Across), which occurs across the inner mitochondrial folds, called CRISTAE (10 Down). This stage produces the most ATP, typically around THIRTYFOUR (4 Across) molecules, and provides the body with ENERGY (2 Down). The full name for ATP is ADENOSINETRIPHOSPHATE (13 Across).
It is important to note that the puzzle contains structural errors. For instance, the answer for 17 Down, MATRIX (the space inside the cristae), conflicts with the letters from 19 Across. Similarly, the six-letter space for 20 Across does not match its logical three-letter answer, ATP
