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Course: AQA A Level Biology 7402
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AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

7.4.2 Carrying Capacity – Exam questions

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  • Questions count: 9
  • Passing grade: B+
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1.
At which time point in the graph below does the size of the population reach the carrying capacity for the ecosystem?
SAT Biology - Question 264
A
B
C
D
E
2.
Which key term matches this description: "S-shaped; levels off at carrying capacity."
Which key term matches this description: "S-shaped; levels off at carrying capacity."
Limiting factor
Population density
Logistic growth
Exponential growth
3.
Which statement best describes Carrying capacity (K)?
A graph of how many individuals of a cohort remain alive at each age.
Its effect strengthens as the population becomes crowded — disease, competition, predation.
The shift from high birth and death rates to low ones as a country develops.
The maximum population an environment can sustain indefinitely.
4.
From the yeast data, what is the carrying capacity of the flask?
About 60 million cells per mL
About 2 million cells per mL
About 32 million cells per mL
There is no limit
5.
Which statement best describes Carrying capacity (human)?
The statistical study of human populations — size, structure and change.
Deaths per 1000 people per year.
Not fixed — technology, diet and consumption move it up or down.
The TFR that holds a population steady — about 2.1, not 2.0.
6.
Which substance in cigarette smoke reduces the oxygen-carrying capacity of blood?
Tar
Nicotine
Carbon monoxide
Mucus
7.
Carrying capacity stays fixed forever for any environment. True or false?
False
True
True for islands
True for animals
8.
Only density-dependent factors can regulate a population around its carrying capacity. True or false?
False
True
False, floods regulate it
True only for predators
9.
Human carrying capacity is not a fixed number. True or false?
True
False
False, it is 10 billion
True only for cities
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Part of 7. Genetics, Populations, Evolution and Ecosystems (A Level only) — see every lesson and quiz in this unit.
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