Structure and Characteristics of Virus

Q.

Why viruses are in the border line of living and non living organisms

Q.

Which of the following is NOT true about viruses?

1. Viruses have either DNA or RNA as the genetic material.
2. Viruses do not infect bacteria, fungi and algae.
3. Viruses use host machinery to produce more of their kind.
4. Viruses are useful in the preparation of vaccines.

Q.

Which of the following statement(s) is/are true about viruses?

i. Viruses are the smallest among the microorganisms

ii. Viruses can live freely

iii. Viruses use the host cell to reproduce

iv. Viruses do not have DNA or RNA

1. i and iii

2. iii and iv

3. ii and iv

4. i

Q.

Viruses are 1000 times larger than bacteria. True or false?

1. True

2. False

Q. Which of the following statement(s) is/are true about viruses?
(i) Viruses are smallest among all microorganisms.
(ii) Viruses can live freely.
(iii) Viruses use the host cell to reproduce.
(iv) Viruses do not have DNA or RNA.

1. (i) and (iii)
2. (ii) and (iv)
3. Only (i)
4. (iii) and (iv)

Q. Which of the following statement(s) is/are true about viruses?
(i) Viruses are smallest among all microorganisms.
(ii) Viruses can live freely.
(iii) Viruses use the host cell to reproduce.
(iv) Viruses do not have DNA or RNA.

1. (i) and (iii)
2. (ii) and (iv)
3. Only (i)
4. (iii) and (iv)

Q. How are viruses different from other microbes

Q.

Viruses are _____________ organisms.

Q. Which of the following is NOT true about viruses?

1. Viruses have either DNA or RNA as the genetic material.
2. Viruses do not infect bacteria, fungi and algae.
3. Viruses use host machinery to produce more of their kind.
4. Viruses are useful in the preparation of vaccines.

Q. Is there any non living microbes in this universe?

Q. Viruses are capable of multiplying only inside the host.

1. True
2. False

Q.

Which of the following disease is caused by a virus?

1. Tuberculosis
2. Dengue
3. Cholera
4. Typhoid

Q. Viruses are neither living nor non-living.

1. True
2. False

Q. Which of the following is NOT true about viruses?

1. Viruses have either DNA or RNA as the genetic material.
2. Viruses do not infect bacteria, fungi and algae.
3. Viruses are useful in the preparation of vaccines.
4. Viruses use host machinery to produce more of their kind.

Q. What is the name of micro-organisms which reproduce only inside the living cells of other organisms?
[1 mark]
[Lakhmir Singh]
[Viruses]

Q. Typhoid is a disease caused by virus.

1. False
2. True

Q. Which of the following statement(s) is/are true about viruses?
(i) Viruses are smallest among all microorganisms.
(ii) Viruses can live freely.
(iii) Viruses use the host cell to reproduce.
(iv) Viruses do not have DNA or RNA.

1. (i) and (iii)
2. (ii) and (iv)
3. Only (i)
4. (iii) and (iv)

Q. Antibiotics are ineffective against which of the following microorganisms?

1. Viruses
2. Protozoa
3. Bacteria
4. Fungi

Q. Female mosquitoes suck blood because they need the protein in blood to produce eggs.

1. False
2. True

Q. Viruses multiply only inside the host.

1. False
2. True