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Cell Biology Overview

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Questions and Answers

What is the primary role of the cell in biological organisms?

To filter and purify blood

To store and transfer genetic information (correct)

To regulate body temperature

To provide structure and support

Which of the following is NOT a major characteristic of cells?

They are visible to the naked eye (correct)

They can sense environmental changes

They are capable of movement

They use energy

According to the Cell Theory, which statement is correct?

Cells can arise from non-living matter

Cells are the largest living units

Cells are present only in multicellular organisms

Cells arise only from pre-existing cells (correct)

What is the primary function of the nucleus in a eukaryotic cell?

To store and distribute genetic material Signup and view all the answers

Which of the following is NOT a type of cell found in mammals?

Chloroplast cells Signup and view all the answers

What is the primary function of the cellular membrane?

To regulate the movement of substances in and out of the cell Signup and view all the answers

What is the function of the Rough Endoplasmic Reticulum in a cell?

Protein synthesis Signup and view all the answers

What is a common structure found in all cells?

Ribosome Signup and view all the answers

How does cell size affect the diffusion of materials within the cell?

As cell size increases, diffusion becomes slower Signup and view all the answers

Which type of cell contains a nucleoid as a region for genetic material?

Prokaryotic cell Signup and view all the answers

What is a defining characteristic of eukaryotic cells compared to prokaryotic cells?

Presence of a nucleus Signup and view all the answers

How much DNA can fit into a nucleus that's 0.000005 meters across?

$2$ meters of human DNA Signup and view all the answers

What is the main function of a lysosome in a cell?

Digesting food Signup and view all the answers

Which organelle is described as the 'solar panel of the plant cell'?

Chloroplast Signup and view all the answers

What distinguishes plant cells from animal cells?

Plant cells lack chloroplasts. Signup and view all the answers

The central vacuole may occupy around what percentage of a plant cell?

90% Signup and view all the answers

Which cell organelle is not found in plant cells?

Lysosome Signup and view all the answers

What is the main function of the lysosome in a eukaryotic cell?

Cell suicide Signup and view all the answers