Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

1. Overview of Cell Biology

Properties of the Cell

Cell Biology

1. Overview of Cell Biology

Properties of the Cell

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Multiple Choice

Which of the following is a part of the accepted cell theory?

All living organisms are composed of one or more cells.

Only animal cells contain genetic material.

Cells do not carry out metabolic processes.

Cells can arise spontaneously from non-living matter.

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Verified step by step guidance

Understand the core principles of the cell theory. The three main tenets of the cell theory are: (1) All living organisms are composed of one or more cells, (2) The cell is the basic unit of structure and function in living organisms, and (3) All cells arise from pre-existing cells through cell division.

Evaluate the first statement: 'All living organisms are composed of one or more cells.' This aligns with the first tenet of the cell theory and is therefore correct.

Evaluate the second statement: 'Only animal cells contain genetic material.' This is incorrect because all cells, including plant, bacterial, and fungal cells, contain genetic material in the form of DNA.

Evaluate the third statement: 'Cells do not carry out metabolic processes.' This is incorrect because cells are the site of metabolic processes, such as respiration, protein synthesis, and energy production, which are essential for life.

Evaluate the fourth statement: 'Cells can arise spontaneously from non-living matter.' This is incorrect because the cell theory explicitly states that all cells arise from pre-existing cells, disproving the idea of spontaneous generation.