Table of contents

1. Introduction to Biology2h 42m
2. Chemistry3h 37m
3. Water1h 26m
4. Biomolecules2h 23m
5. Cell Components2h 26m
6. The Membrane2h 31m
7. Energy and Metabolism2h 0m
8. Respiration2h 40m
9. Photosynthesis2h 49m
10. Cell Signaling59m
11. Cell Division2h 47m
12. Meiosis2h 0m
13. Mendelian Genetics4h 44m
14. DNA Synthesis2h 27m
15. Gene Expression3h 6m
16. Regulation of Expression3h 31m
17. Viruses37m
- Viruses
  37m
18. Biotechnology2h 58m
19. Genomics17m
- Genomes
  17m
20. Development1h 5m
21. Evolution3h 1m
22. Evolution of Populations3h 53m
23. Speciation1h 37m
24. History of Life on Earth2h 6m
25. Phylogeny2h 31m
26. Prokaryotes4h 59m
27. Protists1h 12m
28. Plants1h 22m
29. Fungi36m
- Fungi
  19m
- Fungi Reproduction
  17m
30. Overview of Animals34m
- Overview of Animals
  34m
31. Invertebrates1h 2m
32. Vertebrates50m
33. Plant Anatomy1h 3m
34. Vascular Plant Transport1h 2m
- Water Potential
  1h 2m
35. Soil37m
- Soil and Nutrients
  20m
- Nitrogen Fixation
  16m
36. Plant Reproduction47m
- Flowers
  33m
- Seeds
  14m
37. Plant Sensation and Response1h 9m
38. Animal Form and Function1h 19m
39. Digestive System1h 10m
- Digestion
  1h 3m
- Blood Sugar Homeostasis
  7m
40. Circulatory System1h 49m
41. Immune System1h 12m
42. Osmoregulation and Excretion50m
- Osmoregulation and Excretion
  50m
43. Endocrine System1h 4m
- Endocrine System
  1h 4m
44. Animal Reproduction1h 2m
- Animal Reproduction
  1h 2m
45. Nervous System1h 55m
- Neurons and Action Potentials
  1h 8m
- Central and Peripheral Nervous System
  46m
46. Sensory Systems46m
- Sensory System
  46m
47. Muscle Systems23m
- Musculoskeletal System
  23m
48. Ecology3h 11m
49. Animal Behavior28m
- Animal Behavior
  28m
50. Population Ecology3h 41m
51. Community Ecology2h 46m
52. Ecosystems2h 36m
53. Conservation Biology24m
- Conservation Biology
  24m

4. Biomolecules

Introduction to Biomolecules

General Biology

4. Biomolecules

Introduction to Biomolecules

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Multiple Choice

Which of the following best describes vitamins and how they differ from minerals?

Vitamins are inorganic elements essential for bone structure, while minerals are organic molecules involved in enzyme activity.

Vitamins are macromolecules that provide structural support, while minerals are only needed for nerve impulses.

Vitamins are organic compounds required in small amounts for metabolism, while minerals are inorganic elements needed for various physiological functions.

Vitamins and minerals are both organic compounds that serve as energy sources for the body.

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Verified step by step guidance

Step 1: Begin by understanding the definitions of vitamins and minerals. Vitamins are organic compounds, meaning they contain carbon and are derived from living organisms. Minerals, on the other hand, are inorganic elements that do not contain carbon and are typically obtained from the earth (e.g., soil, water).

Step 2: Recognize the roles of vitamins in the body. Vitamins are required in small amounts and play crucial roles in metabolism, acting as coenzymes or precursors for enzyme activity. They do not provide energy but are essential for various biochemical processes.

Step 3: Understand the functions of minerals. Minerals are inorganic elements that are necessary for physiological functions such as bone structure (e.g., calcium), nerve impulses (e.g., sodium and potassium), and enzyme activity (e.g., magnesium and zinc).

Step 4: Compare the differences between vitamins and minerals. Vitamins are organic and involved in metabolic processes, while minerals are inorganic and contribute to structural and functional roles in the body.

Step 5: Eliminate incorrect statements based on the definitions and roles of vitamins and minerals. For example, vitamins are not macromolecules, nor do they provide structural support or serve as energy sources. Minerals are not organic molecules, and their primary role is not limited to nerve impulses.