BIO Chapter 1

One of the central themes of this text, which explains how life adapts and changes over time, is

• the nature of science.

• biological systems.

• evolution.

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The basic units of matter, which are the lowest level of biological organization, are called

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Which of the following is formed from a union of two or more of the other

• atom

• molecule

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The smallest, most basic unit of life is the

• organ.

• molecule.

• cell.

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Organisms that are composed of more than one cell are referred to as

• photocellular.

• single-celled.

• multicellular.

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A combination of two or more tissues that perform a common function form a(n)

A group of related organs working together form an organ

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Organ systems join together to function within an individual ______, like a human or a giraffe.

• community

• organism

• species

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For living things like humans, food provides nutrients that are used as the building blocks for ______, which is the capacity to do work.

Multiple choice question.

• metabolism

• responsiveness

• energy

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An organism must maintain a tolerable internal environment including factors such as temperature and acidity in order to preserve a biological balance called