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Cell Theory and Its Discovery

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Questions and Answers

Why do we need to observe animal cells and plant cells using a light microscope?

Because they have to be observed using the light microscope.

What are the types of cells that we study to observe the structure of animal cells and plant cells?

Cheek cells for animal cells and onion epidermal cells for plant cells.

What are the small structures present within the cell that perform different functions?

Organelles.

What is the outer covering of the plant cell made up of?

Cellulose. Signup and view all the answers

What is the difference between the nucleus of an animal cell and a plant cell?

Both have a centralized nucleus. Signup and view all the answers

Why can't most organelles be observed through the light microscope?

Because they are too small to be observed. Signup and view all the answers

What was observed by Robert Hooke in a section of a cork using a microscope in 1665?

A structure like chambers in a beehive, which he named as cells. Signup and view all the answers

What are the three main contents of the cell theory?

The structural and functional unit of life is the cell, all organisms are made up of one or more cells, and new cells are formed from pre-existing cells. Signup and view all the answers

What is the difference between unicellular and multicellular organisms?

Unicellular organisms are composed of a single cell, whereas multicellular organisms are composed of many cells. Signup and view all the answers

What is the function of red blood cells in the body?

The transportation of oxygen. Signup and view all the answers

What is the main characteristic that distinguishes cells from one another?

Their shape, size, and function. Signup and view all the answers

Why are cells not visible to the naked eye, except in a few occasions?

Because they are microscopic in size. Signup and view all the answers