Campbell Biology: Concepts & Connections 8th Edition Test Bank by Reece (2014) | Complete 600 Question Exam Bank with Answers for Chapters 1–38

Campbell Biology: Concepts & Connections 8th Edition
Test Bank by Reece (2014) | Complete 600 Question
Exam Bank with Answers for Chapters 1–38

,Chapter 1: Biology: Exploring Life

1. Which statement best describes the central theme of biology?

A. All organisms are identical at the molecular level
B. Life depends on interactions among biological systems at different
levels
C. Only genetic information determines organism structure
D. Evolution no longer affects modern organisms

Correct Answer: B




2. The smallest unit capable of carrying out all activities of life is
the:

A. Atom
B. Molecule
C. Cell
D. Organ

Correct Answer: C




3. Which sequence correctly represents levels of biological
organization from smallest to largest?

,A. Cell → molecule → tissue → organ
B. Atom → molecule → cell → organism
C. Organ → tissue → cell → atom
D. Ecosystem → population → community → organism

Correct Answer: B




4. The process by which populations change genetically over
generations is called:

A. Homeostasis
B. Evolution
C. Metabolism
D. Respiration

Correct Answer: B




5. A hypothesis in science is:

A. A proven fact
B. A testable explanation for an observation
C. A scientific law
D. A personal opinion

Correct Answer: B

, 6. Which molecule carries hereditary information?

A. ATP
B. DNA
C. Protein
D. Lipid

Correct Answer: B




7. Natural selection acts directly on:

A. Genes
B. Individuals' traits
C. Ecosystems
D. Mutations only

Correct Answer: B




8. A controlled experiment differs from a natural observation
because it:

A. Uses no measurements
B. Tests a variable under controlled conditions