Who discovered cells, and how?

Question:

Answer:

The cell was first discovered by Robert Hooke. He observed the cell in a thin section of cork with the help of rough microscope in 1665. Thus he was the first to discover the cell.

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Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?

Carry out the following osmosis experiment: Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water.

Compare the plant cell and animal cell.

Chapter 5 NCERT Class 9 Science SOLUTIONS

Question:

Answer:

More NCERT Questions

Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?

Carry out the following osmosis experiment: Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water.

Compare the plant cell and animal cell.

What is Osmosis?

How does amoeba get its food?

Where do the lipids and proteins constituting the cell membrane get synthesised?

Which organelle is known as the power house of the cell? Why?

What would happen if the plasma membrane ruptures or breaks down?

What would happen if the plasma membrane ruptures or breaks down?

How is a eukaryotic cell is differ from prokaryotic cells?

Where are proteins synthesised inside the cell?

Why are lysosomes known as suicide bags?

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

Can you name the two organelles we have studied that contain their own genetic material?

How do substances like CO2 and water move in and out of the cell? Discuss Why is the plasma membrane called a selectively permeable membrane?

Why is the cell called the structural and functional unit of life?

Related Topics

Chapter 5 NCERT Class 9 Science SOLUTIONS

Question:

Answer:

More NCERT Questions

Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?

Carry out the following osmosis experiment: Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water.

Compare the plant cell and animal cell.

What is Osmosis?

How does amoeba get its food?

Where do the lipids and proteins constituting the cell membrane get synthesised?

Which organelle is known as the power house of the cell? Why?

What would happen if the plasma membrane ruptures or breaks down?

What would happen if the plasma membrane ruptures or breaks down?

How is a eukaryotic cell is differ from prokaryotic cells?

Where are proteins synthesised inside the cell?

Why are lysosomes known as suicide bags?

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

Can you name the two organelles we have studied that contain their own genetic material?

How do substances like CO2 and water move in and out of the cell? Discuss Why is the plasma membrane called a selectively permeable membrane?

Why is the cell called the structural and functional unit of life?

Related Topics

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