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

Prokaryotic Cell Architecture

Cell Biology

1. Overview of Cell Biology

Prokaryotic Cell Architecture

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Multiple Choice

Which of the following cell arrangements is described correctly in prokaryotic cells?

Streptococcus refers to chains of spherical cells.

Staphylobacillus refers to clusters of rod-shaped cells.

Tetrad refers to a cube of eight rod-shaped cells.

Diplobacillus refers to chains of spherical cells.

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Verified step by step guidance

Understand the terminology used to describe prokaryotic cell arrangements. Prokaryotic cells, such as bacteria, are often classified based on their shape (e.g., spherical, rod-shaped) and their arrangement (e.g., chains, clusters).

Review the term 'Streptococcus.' The prefix 'strepto-' refers to chains, and 'coccus' refers to spherical cells. Therefore, Streptococcus describes chains of spherical cells.

Analyze the term 'Staphylobacillus.' The prefix 'staphylo-' refers to clusters, and 'bacillus' refers to rod-shaped cells. However, rod-shaped cells typically do not form clusters, so this term is not accurate.

Examine the term 'Tetrad.' A tetrad refers to a group of four cells arranged in a square, not a cube of eight cells. Additionally, tetrads are typically associated with spherical cells, not rod-shaped cells.

Evaluate the term 'Diplobacillus.' The prefix 'diplo-' refers to pairs, and 'bacillus' refers to rod-shaped cells. Therefore, Diplobacillus describes pairs of rod-shaped cells, not chains of spherical cells.