Cell Theory

Q.

What are the $5$ characteristics of a virus?

Q.

Why are viruses not classified living?

Q.

What are the main features of cell theory ?

Q.

Viruses are dead when it is outside a host cell. They are alive only inside a host cell.

1. True

2. False

Q.

Do Viruses feed on sugar?

Q.

Are viruses smaller than bacteria?

Q.

Give the general characters of Viruses.

Q.

What life characteristics do viruses have?

Q.

Cell arises from preexisting cell was stated by_________.

Q.

Cell arises from pre-existing cell was stated by :

1. Haeckel

2. Virchow

3. Hooke

4. Schleiden

Q.

Which of the following is/are not the points of the cell theory?

1. The cell is the smallest unit of structure of all living things.

2. The cell is the unit of function of all living things.

3. Cells do not arise from pre-existing cells.

4. Some living organisms are not made up of cells

Q.

Name the scientist who coined the term cell for the smallest unit observed in a cork.

1. Robert Hooke

2. Robert Koch

3. Carl Linnaeus

4. Chales Darwin

Q. _________ was the first one to observe free living cells. The term cell was given by ___________ . Cell theory was proposed by _________ and ________ . All cells arise from pre-existing cells was suggested by ____________ .
Select the correct sequence of names to complete the above paragraph.

1. Robert Hooke, Virchow, Anton von Leeuwenhoek, Schleiden, Schwann
2. Anton von Leeuwenhoek, Robert Hooke, Schleiden, Schwann, Virchow
3. Robert Hooke, Virchow, Schleiden, Schewann, Anton von Leeuwenhoek
4. Anton von Leeuwenhoek, Virchow, Schleiden, Schewann, Robert Hooke

Q.

Who purposed that all cells arise from pre-existing cells?

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

Q. Who made the statement 'new cells arise from pre-existing cells'?

1. Haeckel
2. Virchow
3. Hooke
4. Schleiden

Q.

Cell theory was given by :

1. Schleiden and Schwann

2. Virchow

3. Hooke

4. Haeckel

Q.

The cell theory is not applicable to

1. Algae

2. Virus

3. Bacteria

4. Fungi

Q.

How are virus different from other microbes?

Q. What is borderline of viruses

Q.

can a virus as big as a human

Q.

Fill in the blanks:

All types of cells come from _____ cells.

Q.

Who made the famous statement 'Cells arise from pre-existing cells'.

1. Hooke

2. Schleiden

3. Haeckel

4. Virchow