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Biology: Viruses and Protozoa

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Questions and Answers

What distinguishes viruses from other microorganisms in terms of their biological activity?

Viruses require living cells to multiply and use their biochemical machinery. (correct)

Viruses have rigid cell walls that determine their shape.

Viruses have a complex metabolism allowing them to produce energy.

Viruses are capable of reproducing independently of living cells.

Which of the following statements about protozoa is correct?

Protozoa are multicellular organisms and possess cell walls.

All protozoa are harmful and cause diseases in humans.

All protozoa are motile and have complex anatomical features.

Protozoa can be classified based on their mode of locomotion. (correct)

What is a common characteristic of viruses that complicates treatment options?

They do not exhibit metabolic activities. (correct)

They can be targeted by antibiotics.

They produce toxins that harm human cells.

They have a well-defined metabolic pathway.

Which method of movement is NOT used by some protozoa?

<p>Photosynthetic movement</p> Signup and view all the answers

Which of the following diseases is associated with protozoan infection?

<p>Malaria</p> Signup and view all the answers

Study Notes

Viruses

Viruses are extremely small particles made of genetic material (DNA or RNA) enclosed in a protein coat.
Sometimes, viruses have a membrane around the protein coat.
Viruses lack metabolic processes.
This makes it hard to target them with drug treatments.
Viruses replicate inside living cells, using the cell's own machinery.

Protozoa

Protozoa are single-celled eukaryotic organisms.
Many protozoa can move, using different methods.
Some use flagella.
Some use cilia.
Others use pseudopodia.
Some species do not move.
Protozoa come in a wide range of shapes because they lack cell walls.
Some protozoa cause diseases in humans (malaria, sleeping sickness, dysentery, toxoplasmosis).

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Description

Explore the fascinating world of viruses and protozoa in this quiz. Learn about the characteristics, structures, and pathogenic aspects of these microscopic entities. Test your knowledge on their differences and roles in disease.