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a. Write the word or chemical equation for aerobic cellular respiration - VCE - SSCE Biology - Question 7 - 2011 - Paper 1
Question 7
a. Write the word or chemical equation for aerobic cellular respiration. b. Cyanide inactivates metabolic reactions at the cristae of mitochondria. Cyanide poisonin... show full transcript
Worked Solution & Example Answer:a. Write the word or chemical equation for aerobic cellular respiration - VCE - SSCE Biology - Question 7 - 2011 - Paper 1
Step 1
Write the word or chemical equation for aerobic cellular respiration.
Answer
The chemical equation for aerobic cellular respiration can be represented as:
ightarrow 6CO_2 + 6H_2O + ext{ATP}$$ In words, glucose reacts with oxygen to produce carbon dioxide, water, and energy in the form of ATP.Step 2
Explain why cyanide poisoning often results in death.
Answer
Cyanide inhibits the electron transport chain, specifically at the cytochrome c oxidase complex. This disruption prevents the transfer of electrons, which is essential for the synthesis of ATP. Without ATP, cellular processes cannot function effectively, leading to cell death. Consequently, vital organs fail, resulting in mortality.
Step 3
Describe the chemical changes that occur at location X when light is present.
Answer
At location X in the chloroplast, light energy is used to split water molecules (photolysis) into oxygen, protons, and electrons:
ightarrow 4H^+ + 4e^- + O_2$$ This process generates oxygen as a byproduct and provides the electrons needed for the formation of NADPH and ATP through the light-dependent reactions of photosynthesis.