Macrophages are large white blood cells that
A - VCE - SSCE Biology - Question 16 - 2005 - Paper 1
Question 16
Macrophages are large white blood cells that
A. give rise to monocytes.
B. engulf bacteria and destroy them.
C. produce proteins called ‘complement proteins’.
D. sec... show full transcript
Worked Solution & Example Answer:Macrophages are large white blood cells that
A - VCE - SSCE Biology - Question 16 - 2005 - Paper 1
Step 1
A. give rise to monocytes.
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Answer
This statement is incorrect. While macrophages originate from monocytes, they do not give rise to them; rather, monocytes differentiate into macrophages.
Step 2
B. engulf bacteria and destroy them.
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Answer
This statement is also not accurate. Although macrophages are phagocytic cells that can engulf bacteria, their primary function is to destroy pathogens, not simply engulf them.
Step 3
C. produce proteins called ‘complement proteins’.
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Answer
This is the correct answer. Macrophages are known to produce complement proteins which play a critical role in enhancing the immune response.
Step 4
D. secrete bacterial-destroying enzymes into the bloodstream.
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Answer
This statement is misleading. Macrophages do secrete enzymes, but these are typically released at the site of infection rather than into the bloodstream directly.
