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1.3 Respiration

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Question 43

During prolonged, low-intensity aerobic exercise, the body shifts from metabolising glucose to oxidising lipids, such as palmitic acid (

C16H32O2 \text{C}_{16}\text{H}_{32}\text{O}_2 C16​H32​O2​

). What is the balanced chemical equation for the complete aerobic respiration of one molecule of palmitic acid?

A
C16H32O2+16O2→16CO2+16H2O \text{C}_{16}\text{H}_{32}\text{O}_2 + 16\text{O}_2 \rightarrow 16\text{CO}_2 + 16\text{H}_2\text{O} C16​H32​O2​+16O2​→16CO2​+16H2​O
B
C16H32O2+23O2→16CO2+16H2O \text{C}_{16}\text{H}_{32}\text{O}_2 + 23\text{O}_2 \rightarrow 16\text{CO}_2 + 16\text{H}_2\text{O} C16​H32​O2​+23O2​→16CO2​+16H2​O
C
C16H32O2+24O2→16CO2+16H2O \text{C}_{16}\text{H}_{32}\text{O}_2 + 24\text{O}_2 \rightarrow 16\text{CO}_2 + 16\text{H}_2\text{O} C16​H32​O2​+24O2​→16CO2​+16H2​O
D
C16H32O2+23O2→16CO2+32H2O \text{C}_{16}\text{H}_{32}\text{O}_2 + 23\text{O}_2 \rightarrow 16\text{CO}_2 + 32\text{H}_2\text{O} C16​H32​O2​+23O2​→16CO2​+32H2​O
Markscheme

1.3 Respiration Questions

  1. GCSE
  2. /Biology
  3. /1.3 Respiration

113 exam-style questions on OCR GCSE Biology 1.3 Respiration, covering 1.3.1 Cellular respiration supplies ATP, 1.3.2 Aerobic and anaerobic respiration, 1.3.3 Sugars and carbohydrates, 1.3.4 Amino acids and proteins, and 1.3.5 Fatty acids and lipids. Each one has a worked solution and a mark scheme showing where the marks go.

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