Table of contents

1. Introduction to Biology2h 42m
2. Chemistry3h 40m
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 12m
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

Introduction to Cell Division

General Biology

11. Cell Division

Introduction to Cell Division

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Multiple Choice

During the G1 phase of the cell cycle, how does the rate of cell growth typically change?

It increases as the cell prepares for DNA replication.

It decreases because the cell is dividing.

It stops completely until mitosis begins.

It remains constant throughout the entire cell cycle.

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Verified step by step guidance

Understand the G1 phase of the cell cycle: The G1 phase is the first gap phase after cell division (mitosis) and before DNA replication (S phase). During this phase, the cell grows in size and synthesizes proteins and organelles necessary for DNA replication and subsequent cell division.

Consider the biological processes occurring during G1: The cell is actively preparing for DNA replication, which requires an increase in cellular components such as enzymes, nucleotides, and energy stores. This preparation typically involves an increase in the rate of cell growth.

Evaluate the options provided: Analyze each statement in the context of the G1 phase. For example, the statement 'It increases as the cell prepares for DNA replication' aligns with the biological activities of the G1 phase, while 'It decreases because the cell is dividing' is incorrect because division occurs during mitosis, not G1.

Eliminate incorrect answers: The statement 'It stops completely until mitosis begins' is incorrect because the cell is actively growing during G1. Similarly, 'It remains constant throughout the entire cell cycle' is incorrect because growth rates vary depending on the phase of the cell cycle.

Conclude with the correct understanding: The rate of cell growth typically increases during the G1 phase as the cell prepares for DNA replication, making this the correct answer.