The World of Viruses

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Which of the following is NOT a component of a virus?

Nucleic acids

Proteins

Carbohydrates (correct)

Lipids

How do viruses reproduce?

By consuming nutrients from the environment

By injecting their genetic material into living cells (correct)

By dividing like cells

By undergoing photosynthesis

What is the size of viruses?

Visible under a compound microscope

Visible under a light microscope

Visible under an electron microscope (correct)

Visible to the naked eye

What is the protein coat surrounding a virus called?

Capsid Signup and view all the answers

How do viruses enter human or animal cells?

By fusing with the cell membrane Signup and view all the answers

Match the following descriptions with their corresponding terms related to viruses:

Non-living particle made of proteins, nucleic acids, and sometimes lipids = Virus The process by which viruses reproduce by infecting living cells = Viral infection The protective protein coat of a virus = Capsid A cell that viruses can infect = Host cell Signup and view all the answers

Match the following terms with their definitions in the context of viruses:

Virus = A non-living particle that can only reproduce by infecting living cells Capsid = The protein coat surrounding a virus Viral genes = Genes of a virus that are expressed once inside a cell Host cell = A human or animal cell that a virus enters and takes over Signup and view all the answers

Match the characteristics with their corresponding virus-related terms:

Can only be viewed with an electron microscope = Virus Cannot grow or multiply on its own = Virus Contains only a few genes in the simplest form = Virus May destroy the cell once inside = Viral genes Signup and view all the answers

Match the following terms to their definitions related to virus structure and composition:

Proteins that trick the cell to take in the virus = Receptor proteins A protective layer surrounding a virus = Capsid The smallest unit of a virus containing only a few genes = Simplest virus A cell that is taken over by a virus to help it multiply = Host cell Signup and view all the answers

Match the following virus-related terms with their descriptions:

Virus = A particle that is not alive and can only reproduce by infecting living cells Capsid = The protein coat surrounding a virus Viral genes = They are expressed once the virus is inside a cell and may destroy the cell Host cell = A cell that is invaded by a virus in order for the virus to multiply Signup and view all the answers