Day 03: 1.3-2.1 The Nature of Matter

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What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

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What is DNA?

Back

DNA (deoxyribonucleic acid) is a molecule present in all living cells that contains the genetic information necessary for the growth, development, and reproduction of organisms.

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What is biology?

Back

Biology is the study of life and living organisms, including their structure, function, growth, evolution, and distribution.

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What is the smallest unit of matter?

Back

The smallest unit of matter that retains its unique properties is called an element.

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What is metabolism?

Back

Metabolism refers to all the chemical reactions that occur within a living organism to maintain life, including processes that break down nutrients and build up cellular structures.

Front

What are the characteristics of living things?

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Living things exhibit characteristics such as growth, reproduction, response to stimuli, homeostasis, and metabolism.

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What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means and consists of atoms with the same number of protons.

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What is a compound?

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A compound is a substance formed when two or more elements chemically bond together in fixed proportions.

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.

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What is a stimulus?

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A stimulus is any change in the environment that causes a response in an organism.