Biology

The Fundamental Unit of Life

Question:

Which cell organelle is called 'transport system'?

Answer:

Endoplasmic Reticulum
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The Fundamental Unit of Life

Q 1.

Who proposed fluid-mosaic model of cell or plasma membrane?

Q 2.

Name the biggest cell in human body.

Q 3.

What are chromosomes?

Q 4.

Identify cell organelle and write down its name:
Present in some animal cells, help in locomotion.

Q 5.

Who expanded cell theory by suggesting that all cells arise from pre-existing cells?

Q 6.

Name the cell organelles which their own DNA and Ribosomes.

Q 7.

What are the components nucleus?

Q 8.

What is osmoregulation?

Q 9.

Name the cell type that have internal membranes which compartmentalize their functions.

Q 10.

When chromosomes are visible in the nucleus?

Q 11.

What is the full form of DNA and RNA?

Q 12.

Identify cell organelle and write down its name:
A fluid-filled space surrounded by a membrane. Generally contains salts and sugars in plants.

Q 13.

Define Cell

Q 14.

What is diffusion?

Q 15.

Who discovered Virus?

Q 16.

Identify cell organelle and write down its name:
A partially permeable layer prevents cell contents from escaping controls what substances enter and leave the cell. Identify?

Q 17.

Who is known as Father of Biology?

Q 18.

Will the temperature have any effect on the process of the osmosis?

Q 19.

What is cytoskeleton?

Q 20.

Name the longest cell in human body.

Q 21.

What are centrosomes? What functions do they perform?

Q 22.

What is the function of nucleoplasm?

Q 23.

Identify cell organelle and write down its name:
Thread like structures made up of in DNA and proteins. Converts to chromosomes when cell is dividing.

Q 24.

Identify cell organelle and write down its name:
Powehouse of cell

Q 25.

Who coined the term 'protoplasm'?

Q 26.

Name the smallest cell in human body.

Q 27.

Which cell organelle is known as 'protein factory'?

Q 28.

Why is mitochondria absent in red blood cells?

Q 29.

Identify cell organelle and write down its name:
Called 'suicide bags' of a cell.

Q 30.

Is plasma membrane permeable or selectively permeable?

Q 31.

Identify cell organelle and write down its name:
Appear brown dots either present freely in cell or bound to a membrane and make proteins.

Q 32.

Identify cell organelle and write down its name:
Digestive organelle where macromolecules are hydrolyzed

Q 33.

Identify cell organelle and write down its name:
A structure involved in production of ribosomes, present inside a nucleus.

Q 34.

What will happen if a de-shelled egg in a concentrated salt solution for 5 minutes?

Q 35.

Identify cell organelle and write down its name:
Jelly like substance containing particles and other organelles. What is it?

Q 36.

Identify cell organelle and write down its name:
A network of flattened cavities surrounded by a membrane, which links with the nuclear membrane. Help in packaging proteins.

Q 37.

Identify cell organelle and write down its name:
Detoxify drugs and poisons specially in liver cells.

Q 38.

In which year electron microscope was invented?

Q 39.

Name the book in which Robert Hooke published his observations about cork cells.

Q 40.

Give an example of anucleate cell i.e. cell without nucleus.

Q 41.

Give examples of cells which are muti-nucleate (i.e. having many nuclei).

Q 42.

Why are lysosomes known as suicide bags?

Q 43.

What is the energy currency of the cell called?

Q 44.

Which organ of the plant body helps in osmoregulation?

Q 45.

Which organelle of the cell in animals helps in osmregulation?

Q 46.

Which cell organelle is called 'transport system'?

Q 47.

Name the cell organelles involved in synthesis, packaging and movement of protein (or other macromolecules) inside a cell.

Q 48.

Name the world's smallest cell.

Q 49.

What are different types transport of components across cell membrane?

Q 50.

Define Passive Transport.