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

11. Cell Division

Organization of DNA in the Cell

General Biology

11. Cell Division

Organization of DNA in the Cell

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Multiple Choice

Which of the following correctly describes chromatin?

Chromatin is a type of carbohydrate that provides energy for cellular processes.

Chromatin is a single-stranded RNA molecule that carries genetic information from DNA to the ribosome.

Chromatin is a lipid bilayer that surrounds the nucleus and regulates the passage of molecules.

Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells.

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Verified step by step guidance

Begin by understanding the term 'chromatin'. Chromatin is a substance found in eukaryotic cells, consisting of DNA and proteins. Its primary function is to package DNA into a more compact, dense shape, which allows for efficient regulation of gene expression and DNA replication.

Consider the options provided in the problem. The first option describes chromatin as a carbohydrate, which is incorrect because carbohydrates are primarily involved in energy storage and supply, not in genetic material packaging.

The second option describes chromatin as a single-stranded RNA molecule. This is incorrect because RNA molecules are involved in the transcription and translation processes, not in the structural organization of DNA within the nucleus.

The third option describes chromatin as a lipid bilayer. Lipid bilayers are components of cell membranes, including the nuclear envelope, but they do not form chromatin.

The correct description of chromatin is that it is a complex of DNA and proteins, specifically histones, which forms chromosomes within the nucleus of eukaryotic cells. This structure is crucial for the organization and regulation of genetic material.