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Biology Exam Review: Science and Chemistry of Life

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Biology Exam Review: Science and Chemistry of Life

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Questions and Answers

What is the goal of science?

To promote personal biases

To prove existing beliefs

To confirm popular opinions

To discover new knowledge and understanding (correct)

What is a hypothesis?

A widely accepted theory

A proposed explanation for a set of observations (correct)

An untested assumption

A proven scientific fact

How does a theory develop?

By relying on unverified claims

By rigorous testing and validation of hypotheses (correct)

By avoiding experimentation

By maintaining a single perspective

Which particles are found in atoms?

Protons, neutrons, and electrons Signup and view all the answers

What is the function of the nucleus in a eukaryotic cell?

Storing genetic material and controlling cell activities Signup and view all the answers

What is the main role of the cytoskeleton in a eukaryotic cell?

Structural support and cell movement Signup and view all the answers

What is the function of the cell membrane?

Regulating the passage of substances into and out of the cell Signup and view all the answers

Where do plants get the energy they need to produce food through photosynthesis?

From sunlight Signup and view all the answers

What is the overall equation for photosynthesis?

$6CO_2 + 6H_2O + light \rightarrow C_6H_{12}O_6 + 6O_2$ Signup and view all the answers

What is the main purpose of cellular respiration?

To release energy from glucose and other organic molecules Signup and view all the answers

What happens during the process of glycolysis?

Conversion of glucose into pyruvate with the release of ATP Signup and view all the answers

What are the main events of the cell cycle?

G1 phase, S phase, G2 phase, M phase Signup and view all the answers

How does DNA differ from RNA?

RNA has thymine and DNA has uracil Signup and view all the answers