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

50. Population Ecology

Introduction to Population Growth Models

General Biology

50. Population Ecology

Introduction to Population Growth Models

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Multiple Choice

How does a logistic growth curve differ from an exponential growth curve?

A logistic growth curve shows a constant rate of increase, while an exponential growth curve shows a decreasing rate of increase.

A logistic growth curve only applies to populations with unlimited resources, while an exponential growth curve applies to populations with limited resources.

A logistic growth curve decreases over time, while an exponential growth curve remains constant.

A logistic growth curve levels off at the carrying capacity, while an exponential growth curve continues to increase without limit.

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Verified step by step guidance

Understand the concept of exponential growth: Exponential growth occurs when a population grows at a constant rate per unit of time, resulting in a J-shaped curve. This type of growth assumes unlimited resources and no environmental constraints.

Understand the concept of logistic growth: Logistic growth occurs when a population's growth rate decreases as it approaches the carrying capacity of the environment. This results in an S-shaped curve, where the population levels off at the carrying capacity due to limited resources and environmental resistance.

Compare the two growth curves: Exponential growth continues to increase without limit, while logistic growth levels off at the carrying capacity, which is the maximum population size that the environment can sustain.

Recognize the role of carrying capacity in logistic growth: Carrying capacity is determined by factors such as food availability, habitat space, and competition. Logistic growth reflects the realistic limitations of these resources.

Apply the correct answer: Based on the definitions and differences, the correct answer is that a logistic growth curve levels off at the carrying capacity, while an exponential growth curve continues to increase without limit.