Biology Concepts Review

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Questions and Answers

What is the basic unit of heredity?

  • Cells
  • Tissues
  • Genes (correct)
  • Organelles

Which of the following is NOT a core principle of biology?

  • Living organisms avoid homeostasis (correct)
  • Genes are the basic unit of heredity
  • Evolution explains unity and diversity
  • Cells are the basic unit of life

What does the branch of botany primarily study?

  • Animals
  • Plants (correct)
  • Chemical processes
  • Microorganisms

Which of the following cells contain a nucleus?

<p>Eukaryotic cells (D)</p> Signup and view all the answers

During which process is RNA synthesized from DNA?

<p>Transcription (D)</p> Signup and view all the answers

What is the term for changes in the DNA sequence?

<p>Mutations (B)</p> Signup and view all the answers

What is the process where new species arise?

<p>Speciation (D)</p> Signup and view all the answers

What do food chains and food webs describe?

<p>The flow of energy and nutrients (D)</p> Signup and view all the answers

Which process do plants use to convert light energy into chemical energy?

<p>Photosynthesis (A)</p> Signup and view all the answers

What type of organism obtains nutrition from other organisms?

<p>Heterotrophic (D)</p> Signup and view all the answers

Flashcards

What is biology?

The scientific study of life.

What does the cell theory state?

All living organisms are composed of cells, which are the basic units of life.

What are genes?

Segments of DNA that contain instructions for building proteins.

What is evolution?

Change in heritable characteristics of biological populations over generations.

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What is natural selection?

Individuals with advantageous traits are more likely to survive and reproduce.

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What does ecology study?

Interactions between organisms and their environment.

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What is photosynthesis?

The process by which plants convert light energy into chemical energy.

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What are Biomolecules?

Organic molecules essential for life (carbohydrates, lipids, proteins, nucleic acids).

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What are enzymes?

Proteins that catalyze biochemical reactions.

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What is homeostasis?

Maintenance of a stable internal environment.

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