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Cellular agents capable of causing infection of body cells include A - VCE - SSCE Biology - Question 1 - 2010 - Paper 1

Question 1

Cellular agents capable of causing infection of body cells include A. prions. B. toxins. C. DNA viruses. D. Gram-negative bacteria.

Worked Solution & Example Answer:Cellular agents capable of causing infection of body cells include A - VCE - SSCE Biology - Question 1 - 2010 - Paper 1

Step 1

A. prions.

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Answer

Prions are infectious agents composed solely of protein and are known to cause various neurodegenerative diseases. They can lead to cellular infection by inducing abnormal folding of normal cellular proteins.

Step 2

B. toxins.

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Answer

Toxins are harmful substances produced by organisms, but they do not directly cause infection in the same way pathogens do. Therefore, they are not considered cellular agents capable of causing infection.

Step 3

C. DNA viruses.

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Answer

DNA viruses are indeed cellular agents that can infect host cells and replicate within them, causing diseases in the infected organism.

Step 4

D. Gram-negative bacteria.

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Answer

Gram-negative bacteria can also infect cells and are capable of causing a wide range of diseases, making them cellular agents that can lead to infections.

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Cellular agents capable of causing infection of body cells include A - VCE - SSCE Biology - Question 1 - 2010 - Paper 1

Worked Solution & Example Answer:Cellular agents capable of causing infection of body cells include A - VCE - SSCE Biology - Question 1 - 2010 - Paper 1

A. prions.

B. toxins.

C. DNA viruses.

D. Gram-negative bacteria.

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