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igcse biotechnology and human and environment

Total questions: 30

Worksheet time: 30mins

Name
Class
Date
1.
Increase in which gas is primarily responsible for increased global warming?
a)
Carbon dioxide
b)
Water vapor
c)
Methane
d)
Nitric oxides
2.
When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?
a)
Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.
b)
The water becomes better able to support aerobic organisms.
c)
The algae provide food for fishes and other organisms, leading to decreased algae populations.
d)
The extra nitrogen provides additional food for the other organisms, increasing their population.
3.
What is the most dramatic result of deforestation?
a)
land is no longer green and full of life
b)
pictures from space show deforestation
c)
loss of habitat for approximately 70% of the worlds species
d)
people can't explore rainforests
4.
The natural resources used by society are limited by various factors. Why is coal considered a nonrenewable resource?
a)
Once coal is used up, it can never be replaced.
b)
Coal is a nonrenewable resource, because it comes from the impact of meteors with the Earth
c)
Coal was a renewable resource, until it was mismanaged by humans
d)
Coal is considered a nonrenewable resource, because it takes millions of years to form
5.
Fossil fuels are an important natural resource used by society. Which of the following best describes fossil fuels?
a)
They are any liquid fuel derived from once-living matter.
b)
They are organic fuels derived from ancient plants and animals.
c)
They are fuels in which dinosaur fossils are commonly found.
d)
They are naturally occurring inorganic fuels like coal and petroleum.
6.
What is one way a drought changes an environment?
a)
animal habitats are flooded
b)
plants have more room to grow
c)
beaches wash away
d)
animals migrate in search of water
7.
Which of the following is a human activity that affects the environment in a helpful way?
a)
recycling paper 
b)
creating pollution 
c)
cutting down trees
d)
creating landfills
8.
If organisms cannot adapt to changes, sometimes the enitre group dies out. This is called _______? 
a)
decompostion 
b)
extinction 
c)
adaptation 
d)
migration 
9.

Which are most closely related to biotechnology?

a)

medicine and agriculture

b)

construction and engineering

c)

water treatment and electricity generation

d)

communication and information technology

10.

Which use of biotechnology most benefits North Carolina agriculture?

a)

producing human vaccines

b)

producing disease resistant crops

c)

producing new medicines from bacteria

d)

producing enzymes to eliminate pollutants

11.

Bacteria cells can be used to produce insulin for the treatment of diabetes in humans. Which best explains how the bacteria cells are able to produce insulin for humans?

a)

The bacteria have been grown on a petri dish containing insulin.

b)

The bacteria have been genetically engineered to contain the DNA needed to produce insulin.

c)

The bacteria have been exposed to radioactivity to create mutant strains capable of producing insulin.

d)

The bacteria have been grown on a petri dish containing sugar; the bacteria produce insulin in response to the sugar.

12.

What is the key difference between renewable and non-renewable resources?

a)

a. All non-renewable resources pollute the environment; renewable resources don't.

b)

b. Non-renewable resources must be refined before humans can use them; renewable resources don't.

c)

c. Non-renewable resources exist in unlimited quantities; renewable resources don't.

d)

d. Non-renewable resources exist in limited quantities; renewable resources don't.

13.

How does recycling conserve natural resources? a. It allows us to re-use products instead of manufacturing new ones. b. It prevents garbage from being burned. c. It saves on the amount of fuel used by garbage trucks. d. It saves on the amount of plastic used to manufacture garbage bags.

a)

a. It allows us to re-use products instead of manufacturing new ones.

b)

b. It prevents garbage from being burned.

c)

c. It saves on the amount of fuel used by garbage trucks.

d)

d. It saves on the amount of plastic used to manufacture garbage bags.

14.

Which of the following is a true statement about recycling?

a)

a. Recycling allows resources to be reused, instead of dumped in landfills.

b)

b. Recycled products emit oxygen into the atmosphere.

c)

c. Recycling causes the earth to cool down, instead of warm up.

d)

d. Recycling turns non-renewable resources into renewable ones

15.

How can population growth lead to more pollution?

a)

a. Too many people breathing causes too much carbon dioxide to enter the atmosphere

b)

b. The body heat generated by billions of people leads to an increase in global warming

c)

c. More people being born means more paper is needed to print birth certificates

d)

d. All people produce waste, so more people equals more waste

16.

Which of the following would be a good step to take to reduce the waste you produce?

a)

a. Ask your parents to buy you your own car

b)

b. Try to reduce your consumption of electricity and fuel

c)

c. Use only electric appliances in your home

d)

d. Only buy products with vacuum-sealed plastic packaging

17.

If fish are caught faster than they can breed, the population will

a)

increase.

b)

decrease.

c)

remain the same.

d)

move to other waters.

18.

Resources that are not replaced as they are used, such as coal and oil, are nonrenewable resources.

a)

True

b)

False

19.

The contamination of Earth's land, water, or air is called

a)

a renewable resource.

b)

a nonrenewable resource.

c)

extinction.

d)

pollution.

20.
largest number of individuals of a population that the environment can support  
a)
carrying capacity
b)
primary succession 
c)
denitrification
d)
mutualism
21.
Which has the least negative impact on wildlife habitat?
a)
agriculture
b)
development
c)
deforestation
d)
recreation
22.
Less rainfall in an area and higher temperatures could lead to ____________.
a)
urbanization
b)
deforestation
c)
desertification
d)
higher pollution
23.
Wind is a __________ energy resource.
a)
Renewable
b)
Nonrenewable
24.

Which is a concern of scientists when genetically modifying plants?

a)

Plants will pass on diseases to animals.

b)

There will be a decrease in biodiversity.

c)

Plants will have a longer growing season.

d)

There will be a decrease in revenue for pesticide manufacturers.

25.

Which application of biotechnology is of greatest economic benefit to North Carolina?

a)

development of livestock that are more domesticated

b)

development of livestock that produce higher quality meat

c)

development of crops that can be grown in extremely dry environments

d)

development of crops that can be grown in extremely low temperatures

26.

Genetic engineering has directly increased productivity in which U.S. industry?

a)

agriculture

b)

automobile

c)

media

d)

none of the above

27.

Which would be reduced as a result of the development of pest-resistant crops?

a)

use of organic fertilizers

b)

use of chemical insecticides

c)

practice of crop rotation techniques

d)

practice of hydroponic farming techniques

28.
what needs of an organism are provided by its habitat
a)
organism
b)
population
c)
food, shelter, water
d)
species
29.
Plants and animals need food for a source of energy for growth and survival. Choose the BEST answer that explains how plants get their food.
a)
Plants get their food from the soil and water.
b)
Plants use the energy from the sun, air, and water to make their own food.
c)
Plants get their food from minerals in fertilizer.
d)
Plants get their food from decaying plants and animals.
30.
Which of the following provides organisms in an ecosystem with all their basic requirements to survive?
a)
soil
b)
air
c)
habitat
d)
producers

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