Cells

Q.

Name the largest cell and smallest cell?

Q.

why is cell called structural unit of life

Q.

What is polymorphism in lysosome?

Q.

If the organization of a cell is destroyed due to some physical or chemical influence, what will happen?

Q. Name the different parts of the buccal cavity.

Q. Every human being starts with just one cell.

1. True
2. False

Q.

The bodies of living organisms are made of tiny units called __

Q. Which of the following statements are correct about prokaryotic cells?

1. They do not have a well defined nucleus.
2. They do not have membrane bound organelles.
3. Their genetic material is called a nucleiod.
4. Their outermost layer is called plasma membrane.

Q. The largest muscle of the human body is (i) __________. The smallest muscle of the human body is known as (ii) _________.

1. (i) Leg Muscle (ii) Nose Muscle
2. (i) Thigh Muscle (ii) Nose Muscle
3. (i) Leg Muscle (ii) Ear Muscle
4. (i) Thigh Muscle (ii) Ear Muscle

Q.

Cell wall is made up of

Q.

All living things are composed of cells.

1. True

2. False

Q. WHY DO PLANT CELLS HAVE A CELL WALL?

Q.

What is it's exact life span of ameoba

Q.

Draw a well-labelled diagram of plant and animal cells.

Q.

The method in which amoeba eat food is called

1. Phagocytosis

2. Pseudopodia

3. Potocytosis

4. None of the above

Q.

Why the cell theory is important?

Q. Stomata and________ help in the exchange of gases in plants.

1. Mitochondria
2. Lenticels
3. Hydathodes
4. Lysosomes

Q.

The fundamental unit of life is

1. Organ System

2. Cell

3. Tissue

4. Organ

Q.

Match the discoveries with the scientists who have made it.

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{a. Anton Van Leeuwenhoek}& \text{i. All animals are made of cells}\\ \text{b. Robert Hooke}& \text{ii. Father of microbiology}\\ \text{c. Theodor Schwann}& \text{iii. Cork has boxed structures}\\ \text{d. Matthias Schleiden}& \text{iv. All plants are made of cells}\end{array}$

1. a-ii, b-iii, c-iv, d-i

2. a-ii, b-i, c-iv, d-iii

3. a-iii, b-i, c-iv, d-ii

4. a-iii, b-ii, c-iv, d-i

Q.

The process through which an amoeba eats its food is known as:

1. Pinocytosis

2. Phagocytosis

3. Pseudocytosis

4. Cytokinesis

Q. The process of cell death is known as ___.

Q.

What is the unit of the nervous system?

Q.

The DNA in a non-dividing cell is usually present as a part of the thread-like ___material.

Q. How can we see micro organisms through microscope?

Q.

Cells organize to form organs.

1. True

2. False

Q.

There is no division of labour inside a cell.

1. True

2. False

Q.

All cells perform the same function.

1. False

2. True

Q.

Where are the Nissls granules found?

Q.

Life of every human being starts from a single cell.

1. True
2. False

Q.

Which of the following statement is INCORRECT?

1. Nerve cells are some of the smallest cells

2. Bacteria are 3 to 5 $\mu m$ in size

3. Mycoplasma is the smallest cell $\left(0.3\mu m\right)$

4. The largest cell is the egg of an ostrich