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?

<p>To store and distribute genetic material (D)</p> Signup and view all the answers

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

<p>Chloroplast cells (D)</p> Signup and view all the answers

What is the primary function of the cellular membrane?

<p>To regulate the movement of substances in and out of the cell (D)</p> Signup and view all the answers

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

<p>Protein synthesis (B)</p> Signup and view all the answers

What is a common structure found in all cells?

<p>Ribosome (B)</p> Signup and view all the answers

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

<p>As cell size increases, diffusion becomes slower (A)</p> Signup and view all the answers

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

<p>Prokaryotic cell (A)</p> Signup and view all the answers

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

<p>Presence of a nucleus (C)</p> Signup and view all the answers

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

<p>$2$ meters of human DNA (D)</p> Signup and view all the answers

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

<p>Digesting food (A)</p> Signup and view all the answers

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

<p>Chloroplast (C)</p> Signup and view all the answers

What distinguishes plant cells from animal cells?

<p>Plant cells lack chloroplasts. (A)</p> Signup and view all the answers

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

<p>90% (B)</p> Signup and view all the answers

Which cell organelle is not found in plant cells?

<p>Lysosome (C)</p> Signup and view all the answers

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

<p>Cell suicide (B)</p> Signup and view all the answers

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