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

Carbohydrates

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Carbohydrates

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1:04 minutes

Problem 2

Textbook Question

A glucose molecule is to starch as (Explain your answer.)a. a steroid is to a lipid.b. a protein is to an amino acid.c. a nucleic acid is to a polypeptide.d. a nucleotide is to a nucleic acid.

Verified step by step guidance

Understand the relationship between glucose and starch: Glucose is a monosaccharide, which is a simple sugar, and starch is a polysaccharide, which is a complex carbohydrate made up of many glucose units linked together.

Identify the type of relationship: The relationship between glucose and starch is that of a monomer to a polymer. Glucose is the building block (monomer) that forms the polymer (starch).

Analyze each option to find a similar monomer-polymer relationship: a. A steroid is not a monomer of lipids; lipids are not polymers in the same sense as starch. b. A protein is a polymer made of amino acids, which are the monomers. c. A nucleic acid is a polymer, but a polypeptide is not a monomer; it is a polymer of amino acids. d. A nucleotide is a monomer that makes up nucleic acids, which are polymers.

Compare the relationships: The correct analogy should reflect a monomer-polymer relationship similar to glucose and starch.

Select the correct answer: Based on the analysis, option d (a nucleotide is to a nucleic acid) correctly represents a monomer-polymer relationship similar to glucose and starch.

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Key Concepts

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

Monomer and Polymer

A monomer is a small, basic molecular unit that can join together to form larger structures known as polymers. In this context, glucose is a monomer that combines to create starch, which is a polymer made up of many glucose units linked together. Understanding this relationship is crucial for analyzing how smaller molecules can form complex carbohydrates.

Biological Macromolecules

Biological macromolecules are large, complex molecules essential for life, including carbohydrates, proteins, lipids, and nucleic acids. Each type of macromolecule has specific functions and structures. Recognizing the role of glucose in carbohydrates and how it compares to other macromolecules helps in understanding the analogy presented in the question.

Analogous Relationships

An analogous relationship compares two pairs of items that have similar functions or structures. In this question, the relationship between glucose and starch is being compared to another pair, requiring an understanding of how the components relate to each other. Identifying the correct analogy involves recognizing the roles of monomers and polymers in different biological macromolecules.