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Organelle

A tiny cell structure that carries out a specific function within the cell

Organ

A body structure that is composed of different kinds of tissues that work together

Organ system

A group of organs that work together to perform a major function

Cellular respiration

The process in which oxygen and glucose undergo a complex series of chemical reactions inside cells, releasing energy.

Chlorophyll

A green photosynthetic pigment found in the chloroplasts of plants, algae, and some bacteria.

Photosynthesis

The process by which plants and other autotrophs capture and use light energy to make food from carbon dioxide and water

Chloroplast

A threadlike structure within a cell's nucleus that contains DNA that is passed from one generation to the next

Ribosome

A small grain-shaped organelle in the cytoplasm of a cell that produces proteins

Protein

Large organic molecule made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur

Golgi Apparatus

An organelle in a cell that receives proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell

Nucleus

In cells, a large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cell's activities

Element

A pure substance that cannot be broken down into other substances by chemical or physical means

Double Helix

The shape of a DNA molecule

Cytoplasm

The thick fluid region of a cell located inside the cell membrane or between the cell membrane and nucleus

Mitochondria

Rod-shaped organelles that convert energy in food molecules to energy the cell can use to carry out its functions

Lysosome

A cell organelle which contains chemicals that break down large food particles into smaller ones and that can be used by the rest of the cell.

Heterotroph

An organism that cannot make its own food and gets food by consuming other living things

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