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Cell Theory and Basic Concepts

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Questions and Answers

Which type of cell is encased by a cell wall and lacks organelles?

Unicellular cell
Prokaryotic cell (correct)
Multicellular cell
Eukaryotic cell

What is the main difference between prokaryotic and eukaryotic cells?

Number of linear chromosomes
Size of the cell
Presence of a nucleus (correct)
Presence of membrane-bound organelles

How many linear chromosomes do eukaryotic cells typically have?

None
Variable
Single
Multiple (correct)

What is the function of organelles in a eukaryotic cell?

Break down food particles (C) Signup and view all the answers

Which statement is true about unicellular organisms?

They are all microscopic (B) Signup and view all the answers

What are the three main principles of cell theory?

<ol> <li>All organisms are composed of one or more cells. 2. The cell is the basic unit of structure and organization in organisms. 3. All cells come from pre-existing cells.</li> </ol> Signup and view all the answers

What characteristic distinguishes eukaryotic cells from prokaryotic cells in terms of genetic material?

Linear chromosomes (C) Signup and view all the answers

Describe the difference between unicellular and multicellular organisms.

Unicellular organisms are single-celled, while multicellular organisms contain many different types of cells, each with specialized functions. Signup and view all the answers

Explain the role of a nucleus in eukaryotic cells.

The nucleus is a membrane-bound central cavity that houses the cell's genetic material. Signup and view all the answers

What are the key features of prokaryotic cells?

Prokaryotic cells are much smaller than eukaryotic cells, lack a nucleus, and do not have membrane-bound organelles. Signup and view all the answers

How do organelles in eukaryotic cells contribute to cellular function?

Organelles, like the organs of our body, have unique functions that contribute to the overall function of the cell. Signup and view all the answers

What distinguishes eukaryotic cells from prokaryotic cells in terms of genetic material?

Eukaryotic cells have multiple linear chromosomes, while prokaryotic cells have a single circular chromosome. Signup and view all the answers

What is the function of the cell wall in prokaryotic cells?

The cell wall provides structural support and protection to prokaryotic cells. Signup and view all the answers

Why are most cells considered microscopic and not visible to the naked eye?

Most cells are microscopic due to their small size, which is below the resolution of the naked eye. Signup and view all the answers

What are the two domains to which prokaryotic cells belong?

Prokaryotic cells belong to the domains Bacteria and Archaea. Signup and view all the answers