Introduction to Biology

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Questions and Answers

What is the scientific study of life called?

  • Biology (correct)
  • Physics
  • Geology
  • Chemistry

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

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

Which of the following is NOT a level of biological organization?

  • Planets (correct)
  • Atoms
  • Tissues
  • Ecosystems

Which type of cell lacks a nucleus?

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

What molecule carries genetic information?

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

What is the process where populations become better suited to their environment?

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

Into how many domains is life classified?

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

What is the study of interactions between organisms and their environment called?

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

What process converts light energy into chemical energy in plants?

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

Which of the following is a key characteristic of animals?

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

Flashcards

What is Biology?

The scientific study of life, exploring the structure, function, growth, origin, evolution, distribution, and taxonomy of living organisms.

Cell Theory

All living organisms are composed of cells, and all cells come from pre-existing cells.

Gene Theory

Traits are inherited through genes, which are specific sequences of DNA.

Evolution

Life evolves over time through processes like natural selection.

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Prokaryotic Cells

Prokaryotic cells lack a nucleus and other membrane-bound organelles.

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Eukaryotic Cells

Eukaryotic cells possess a nucleus and other complex organelles.

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Photosynthesis

Conversion of light energy into chemical energy, synthesizing glucose from carbon dioxide and water.

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Cellular Respiration

Breakdown of glucose to release energy in the form of ATP.

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Mitosis

Cell division that results in two identical daughter cells, used for growth and repair.

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Meiosis

Cell division that results in four genetically different daughter cells, used for sexual reproduction.

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Study Notes

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