Organelles

Q.

Algae have cell walls made up of:

1. Cellulose, hemicellulose, and pectins

2. Cellulose, galactose, and mannans

3. Hemicellulose, pectins, and proteins

4. Pectins, cellulose, and proteins

Q.

What is cell sap ?

Q.

Which of the following cell organelles are found only in animal cell?

1. Plastids
2. Mitochondria
3. Cell membrane
4. Centrioles

Q.

Define nucleoplasm.

Q.

What is the main function of peptidoglycan?

Q. Which part of the cell separate it from its external environment?

1. Nucleus
2. Cell membrane
3. Endoplasmic reticulum
4. Vacuole

Q. Cell is the smallest unit of a living organism.

1. True
2. False

Q. Name the jelly-like substance present between the cell membrane and nucleus.​
​

1. Nuclear membrane
2. Centriole
3. Cytoplasm
4. Nucleolus

Q. Ribosome is the organelle that is responsible for ___________.​

1. Transport of substances​
2. Protein synthesis ​
3. Energy production
4. Photosynthesis ​

Q. Name the scientist who invented the first microscope.

Q.

Membrane-bound structures that are present within a cell are called as ___.

1. cell wall
2. cell membrane
3. cytoplasm
4. cell organelles

Q. Name the three essential parts of a cell. Briefly describe the structure of cell-membrane.

Q. Briefly describe the structure of the nucleus and mention its two functions.

Q. Select the correct option.
1. Ribosomes are called "protein factories" of the cell.
2. Mitochondria are called "suicide bags" of the cell.

1. Both 1 and 2 are false

2. Both 1 and 2 are true

3. 1 is false and 2 is true

4. 1 is true and 2 is false

Q.

The site of protein synthesis in plants is the _______.

1. chloroplast

2. ribosomes

3. lysosome

4. mitochondria

Q. The polar head of the phospholipid is made up of?

Q. Put a tick mark (✓) against the most appropriate alternative in the following statements.
The organelle that controls all activities in a cell:

1. cytoplasm
2. plastids
3. nucleus
4. vacuole

Q.

Life on Earth started from a single cell.

1. False

2. True

Q. I am a colloid, found in the plasma membrane. I have two components of the cell namely the cytoplasm and the nucleus. Who am I?

1. Lysosome
2. Ribosome
3. Protoplasm
4. Mitochondria

Q. The organelles of both plants and animals cells are

[Review question: Pg. No: 66]

Q.

Same organelles perform _____ function in all organisms.

Q. Define cell membrane and state its functions.

Q. What is the basic unit of life?

1. Body
2. Water
3. Cell
4. Tissue

Q.

What are the parts of the cell?

Q. Make a comparison and write down ways in which plant cells are different from animal cells.

Q. Cell is the smallest unit of a living organism.

1. True
2. False

Q. Write short notes on the following -
(a) Vacuole
(b) Robert Hooke

Q.

Where are proteins synthesized inside the cell?

Q. what id cromatography

Q. Identify the non-membranous cell organelle that helps in cell division.

1. Centriole
2. Mitochondrion
3. Lysosome
4. Chloroplast