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

Lipids

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Lipids

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Problem 6

Textbook Question

The main constituents of the plasma membrane are .a. carbohydrates and lipids;b. proteins and phospholipids;c. fats and carbohydrates;d. fatty acids and nucleic acids

Verified step by step guidance

Step 1: Understand the structure of the plasma membrane, which is a crucial component of the cell, providing a barrier and controlling the movement of substances in and out of the cell.

Step 2: Recall that the plasma membrane is primarily composed of a bilayer of phospholipids, which forms the basic structure.

Step 3: Recognize that proteins are embedded within this phospholipid bilayer, serving various functions such as transport, signaling, and structural support.

Step 4: Consider the options provided and identify which components are known to be the main constituents of the plasma membrane.

Step 5: Choose the option that correctly identifies the main constituents of the plasma membrane as proteins and phospholipids.

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Key Concepts

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

Plasma Membrane Structure

The plasma membrane is a biological barrier that separates the interior of a cell from its external environment. It is primarily composed of a phospholipid bilayer, which provides fluidity and flexibility, allowing for the movement of substances in and out of the cell.

Phospholipids

Phospholipids are a type of lipid molecule that form the fundamental building blocks of the plasma membrane. Each phospholipid consists of a hydrophilic (water-attracting) 'head' and two hydrophobic (water-repelling) 'tails,' which arrange themselves in a bilayer, creating a semi-permeable membrane.

Membrane Proteins

Membrane proteins are integral or peripheral proteins embedded in or associated with the plasma membrane. They play crucial roles in various functions, including transport, signaling, and maintaining the cell's structure, thus contributing to the overall functionality of the membrane.