Cell Biology Basics Quiz

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Questions and Answers

What role does mitochondria play within the cell?

  • It protects the cytoplasm.
  • It creates the energy needed by the cells. (correct)
  • It regulates water balance.
  • It stores genetic information.

Which statement is a principle of cell theory?

  • Multicellular organisms do not consist of individual cells.
  • Cells can form spontaneously from non-living matter.
  • Cells are the basic unit of structure in all living organisms. (correct)
  • All living things are made of nucleic acids.

What is the primary function of the cell membrane?

  • To protect the cytoplasm of the cell. (correct)
  • To synthesize proteins.
  • To absorb energy from sunlight.
  • To create waste products.

What is the jelly-like solution that fills each cell called?

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

What is diffusion?

<p>The movement of particles from a higher to a lower concentrated area. (A)</p> Signup and view all the answers

What is the primary characteristic of an organ?

<p>It performs a specific function in the body. (B)</p> Signup and view all the answers

Which of the following best describes osmosis?

<p>Diffusion of water across a selectively permeable membrane. (C)</p> Signup and view all the answers

Which component is unique to plant cells compared to animal cells?

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

Select the statement that accurately reflects unicellular organisms.

<p>They consist of only one cell capable of performing all necessary functions. (B)</p> Signup and view all the answers

What defines selective permeability in cells?

<p>The restriction of movement for all but specific molecules across the membrane. (A)</p> Signup and view all the answers

Flashcards

What is a cell?

The smallest unit of life, responsible for making up all living things.

What is cytoplasm?

The jelly-like substance inside a cell that contains organelles.

What is diffusion?

A process where particles move from an area of high concentration to an area of low concentration.

What are mitochondria?

The powerhouse of the cell, responsible for producing energy for cellular functions.

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What is an organ system?

A group of organs working together to perform a specific function.

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Organ

Groups of similar tissues working together to perform a specific function in the body.

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Organelle

Tiny structures within a cell that have specific jobs, like the nucleus, mitochondria, and cytoplasm.

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Osmosis

The movement of water molecules across a cell membrane from a high concentration area to a low concentration area to achieve balance.

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Plant Cell

These cells have a rigid cell wall and chloroplasts, which are absent in animal cells.

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Selective permeability

A cell membrane that only allows certain molecules to pass through it, selectively choosing what goes in and out.

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