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Biology LibreTexts

1.E: Introduction to Biology (Exercises)

1.1: Themes and Concepts of Biology


Multiple Choice

The smallest unit of biological structure that meets the functional requirements of “living” is the ________.

A. organ
B. organelle
C. cell
D. macromolecule


Which of the following sequences represents the hierarchy of biological organization from the most complex to the least complex level?

A. organelle, tissue, biosphere, ecosystem, population
B. organ, organism, tissue, organelle, molecule
C. organism, community, biosphere, molecule, tissue, organ
D. biosphere, ecosystem, community, population, organism


Free Response

Using examples, explain how biology can be studied from a microscopic approach to a global approach.

Researchers can approach biology from the smallest to the largest, and everything in between. For instance, an ecologist may study a population of individuals, the population’s community, the community’s ecosystem, and the ecosystem’s part in the biosphere. When studying an individual organism, a biologist could examine the cell and its organelles, the tissues that the cells make up, the organs and their respective organ systems, and the sum total—the organism itself.

1.2: The Process of Science

Multiple Choice

A suggested and testable explanation for an event is called a ________.

A. hypothesis
B. variable
C. theory
D. control


The type of logical thinking that uses related observations to arrive at a general conclusion is called ________.

A. deductive reasoning
B. the scientific method
C. hypothesis-based science
D. inductive reasoning


Free Response

Give an example of how applied science has had a direct effect on your daily life.

Answers will vary. One example of how applied science has had a direct effect on daily life is the presence of vaccines. Vaccines to prevent diseases such polio, measles, tetanus, and even the influenza affect daily life by contributing to individual and societal health.