Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Prokaryotic & Eukaryotic Cells

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Prokaryotic & Eukaryotic Cells

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Problem 3

Textbook Question

Which of the following is present in a prokaryotic cell?a. mitochondrionb. ribosomec. nuclear enveloped. chloroplast

Verified step by step guidance

Identify the characteristics of prokaryotic cells, which are generally simpler and lack membrane-bound organelles.

Recall that mitochondria, nuclear envelopes, and chloroplasts are membrane-bound organelles typically found in eukaryotic cells.

Understand that ribosomes are not membrane-bound and are present in both prokaryotic and eukaryotic cells.

Eliminate options that involve membrane-bound organelles: mitochondrion, nuclear envelope, and chloroplast.

Conclude that the correct answer is the option that is not a membrane-bound organelle, which is ribosome.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Prokaryotic Cells

Prokaryotic cells are simple, unicellular organisms that lack a nucleus and membrane-bound organelles. They are characterized by their small size and the presence of a single circular DNA molecule. Common examples include bacteria and archaea, which thrive in various environments and play crucial roles in ecosystems.

Ribosomes

Ribosomes are essential cellular structures responsible for protein synthesis. They can be found in both prokaryotic and eukaryotic cells, and in prokaryotes, they float freely in the cytoplasm. Ribosomes translate messenger RNA (mRNA) into polypeptide chains, which then fold into functional proteins.

Cellular Organelles

Cellular organelles are specialized structures within cells that perform distinct functions. In eukaryotic cells, organelles like mitochondria and chloroplasts are membrane-bound, while prokaryotic cells lack these structures. Understanding the differences in organelle presence helps distinguish between prokaryotic and eukaryotic cells.