School of Life Sciences | Ask A Biologist

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Why is Rudolp's nose red?
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Cell Parts Bits

By Karla Moeller

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  • ATP: adenosine triphosphate. ATP is the energy-carrying molecule of all cells... more
  • Cell: a tiny building block that contains all the information necessary for the survival of any plant or animal. It is also the smallest unit of life. ... more
  • DNA: deoxyribonucleic acid is the information "blue-print" of the cell. It is a nucleic acid and is made from building blocks called nucleotides. This genetic information is passed from parent to child... more
  • Lipid: a building block of life (molecule) made from smaller pieces (fatty acids). There are several kinds of lipids - fats, waxes, sterols,... more
  • Molecule: a chemical structure that has two or more atoms held together by a chemical bond. Water is a molecule of two hydrogen atoms and one oxygen atom (H2O)... more
  • Organelle: "little organ". An internal organ of a cell... more
  • Protein: a type of molecule found in the cells of living things, made up of special building blocks called amino acids.

Flashcard facts and information about the parts of the cell

Biology Bits stories are a great way for you to learn about biology a little bit at a time. We’ve broken down information into pieces that are very tiny—bite-sized biology cards. Cutting out the cards will let you organize them however you want, or use them as flashcards while you read.

This set of bits will teach you about the tiny world on which life depends: the parts inside a cell. To learn more about the science behind your cells, visit Building Blocks of Life - Parts of the Cell.

Play the slide show from the beginning or pick a slide to begin with by clicking on a slide below.


You can also download Biology Bits in the following formats:

Biology Bits Download Print PDFBiology Bits Download Slideshow PDF
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Beaver Teeth

Here are some pieces of biology that you can sink your teeth into. One bit at a time.

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Be part of Ask A Biologist

by volunteering, or simply sending us feedback on the site. Scientists, teachers, writers, illustrators, and translators are all important to the program. If you are interested in helping with the website we have a Volunteer page to get the process started.

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Beaver Teeth

Here are some pieces of biology that you can sink your teeth into. One bit at a time.

Share to Google Classroom

Be part of Ask A Biologist

by volunteering, or simply sending us feedback on the site. Scientists, teachers, writers, illustrators, and translators are all important to the program. If you are interested in helping with the website we have a Volunteer page to get the process started.