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

Eukaryotic Cell Architecture

Cell Biology

1. Overview of Cell Biology

Eukaryotic Cell Architecture

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Multiple Choice

Which of the following is a characteristic unique to eukaryotic cells?

Cell wall composed of peptidoglycan

Presence of membrane-bound organelles

Absence of a cytoskeleton

Genetic material located in the nucleoid region

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Verified step by step guidance

Understand the key differences between eukaryotic and prokaryotic cells. Eukaryotic cells are characterized by the presence of membrane-bound organelles, such as the nucleus, mitochondria, and endoplasmic reticulum, while prokaryotic cells lack these structures.

Analyze the options provided. The first option, 'Cell wall composed of peptidoglycan,' is a characteristic of prokaryotic cells, specifically bacteria, not eukaryotic cells.

Evaluate the second option, 'Presence of membrane-bound organelles.' This is a defining feature of eukaryotic cells, as their organelles are enclosed by membranes, allowing compartmentalization of cellular functions.

Consider the third option, 'Absence of a cytoskeleton.' This is incorrect because eukaryotic cells have a well-developed cytoskeleton composed of microtubules, microfilaments, and intermediate filaments, which provide structural support and facilitate intracellular transport.

Review the fourth option, 'Genetic material located in the nucleoid region.' This is a characteristic of prokaryotic cells, where the DNA is not enclosed in a nucleus but is instead found in a nucleoid region. In eukaryotic cells, genetic material is enclosed within a membrane-bound nucleus.