Give the three structural features found in all virus particles and describe the function of one of these features - AQA - A-Level Biology - Question 1 - 2023 - Paper 1
Question 1
Give the three structural features found in all virus particles and describe the function of one of these features.
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Function of one named feature
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Worked Solution & Example Answer:Give the three structural features found in all virus particles and describe the function of one of these features - AQA - A-Level Biology - Question 1 - 2023 - Paper 1
Step 1
Give the three structural features found in all virus particles
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Answer
Genetic material (RNA or DNA)
Capsid (protein coat)
Attachment proteins
Step 2
Function of one named feature
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Answer
The function of the attachment proteins is to bind to specific receptors on the host cell's surface, facilitating the entry of the virus into the host cell.
Step 3
Explain why viruses are described as acellular and non-living
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Viruses are acellular because they do not have a cell structure or membrane, distinguishing them from living organisms that are cellular in nature.
They are considered non-living as they do not exhibit metabolism, cannot replicate or reproduce independently, and require a host cell for these processes.
Step 4
Give one reason why antibiotics are not effective against viruses
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Antibiotics are not effective against viruses because viruses do not have bacterial structures or metabolic processes that antibiotics target.
