Intro to Biology

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Questions and Answers

What is Biology the scientific study of?

  • Rocks and minerals
  • The stars and planets
  • Life (correct)
  • The Earth's atmosphere

Which theory states that all living organisms are composed of cells?

  • Evolution
  • Homeostasis
  • Gene theory
  • Cell theory (correct)

What is the basic unit of life?

  • Tissue
  • Molecule
  • Organ
  • Cell (correct)

Which of these molecules is the backbone of organic molecules?

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

Which type of cell lacks a nucleus and other membrane-bound organelles?

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

What is the main energy currency of cells?

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

In what process do plants convert light energy into chemical energy?

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

What structures contain DNA and carry genetic information?

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

Which process results in four genetically different daughter cells?

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

What is the process by which new species arise?

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

Flashcards

What is Biology?

The scientific study of life, including its structure, function, growth, origin, evolution, and distribution.

Cell Theory

All living organisms are composed of cells.

Gene Theory

Hereditary information is encoded in DNA and genes.

Evolution

Life evolves over time through natural selection.

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Homeostasis

Living organisms maintain a stable internal environment.

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Cells

The basic unit of life, such as bacteria, nerve cells, or muscle cells.

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Organs

Structures composed of different tissues working together, such as the heart or brain.

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Organisms

Individual living beings, like a plant, animal, or bacterium.

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Water

Essential for life due to its properties as a solvent, its high heat capacity, and its role in chemical reactions.

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Prokaryotic cells

Lack a nucleus and other membrane-bound organelles. (Bacteria and Archaea).

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Study Notes

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