Answer the questions for Activity 2 and Activity 3 concerning viruses.

Here are the answers to Activity 2 and Activity 3.

Activity 2

2.1: A ONLY

2.2: BOTH A AND B

2.3: NONE

2.4: A ONLY

2.5: BOTH A AND B

Activity 3

3.1:

• a) A: Head
• b) B: Genetic material (DNA/RNA)
• c) C: Sheath
• d) D: Tail fibre

3.2: Viruses are referred to as acellular because they lack the basic components of a cell, such as cytoplasm, organelles, and a cell membrane. They are not made of cells.

3.3:

• a) Living things: They possess genetic material (DNA or RNA).
• b) Non-living things: They cannot carry out metabolic processes independently.

3.4: If a virus cannot find another living cell, it will not be able to replicate or carry out any life functions. It will remain dormant or eventually degrade, as viruses are obligate intracellular parasites and require a host cell to reproduce.