American Public University BIO

Question # 00566550 Posted By: knowledgetree Updated on: 07/26/2017 02:48 PM Due on: 07/26/2017
Subject Biology Topic Biochemistry Tutorials:
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Question 1 Exponential growth can only occur when:

A. a population experiences extreme competition for resources.
B. the birth rate is less than or equal to the death rate.
C. growth conditions are ideal.
D. the rate of increase of the population is negative.


Question 2 The death rate of a population is referred to as:

A. survivorship.
B. life expectancy.
C. opportunistic.
D. mortality.



Question 3 The major density dependent limiting factor in populations is:

A. intraspecies competition.
B. parasitism.
C. weather conditions.
D. predation.



Question 4 Uniform distribution patterns for a population are:

A. relatively rare in nature.
B. due to one organism not influencing another organism’s growth pattern.
C. best for animals that hunt and care for their young together.
D. due to unevenly distributed resources in an environment.



Question 5 Which of the following IS NOT considered a population?

A. all of the humans in the world
B. all of the protozoans in the gut of one termite
C. all of the cliff swallows on a particular mountain
D. all of the plants growing in a specific field


Question 6 A decomposer obtains its food from:

A. fallen leaves and bodies of dead animals.
B. eating other organisms.
C. photosynthesis.
D. the sun.



Question 7 Which of the following organisms is a primary consumer?

A. a cow
B. a flowering plant
C. a lion
D. an oak tree

 
Question 8 Which of the following would represent an ecosystem?

A. oak trees, grass, roses, shrubs
B. the sun, the temperature, amount of rainfall, type of soil
C. oak trees, beetles, squirrels, robins
D. the sun, amount of rainfall, oak trees, beetles, squirrels


Question 9 Which of the following organisms is an autotroph?

A. an insect
B. a decomposer
C. a producer
D. a consumer

Question 10 In the food web involving the green heron, a flea, a sunfish and algae, which organism would have the greatest biomass?

A. the flea
B. the algae
C. the green heron
D. the sunfish



Question 11 Which of the following DOES NOT affect the temperature and rainfall of an area?

A. the amount of solar radiation that reaches the area
B. the number of different species in an area
C. the geographical features of the Earth such as mountains and valleys
D. the global atmospheric and oceanic circulation patterns



Question 12 Because of the rain shadow effect on mountains:

A. the air traveling down the leeward side cools and it loses moisture as precipitation.
B. the air traveling up the windward side cools and it picks up moisture.
C. the air traveling up the windward side cools and it loses moisture as precipitation.
D. the air traveling down the leeward side cools and it picks up moisture.



Question 13 When the sun’s rays strike the northern hemisphere more directly, it experiences:

A. winter.
B. the rainy season.
C. the dry season.
D. summer.



Question 14 A savanna:

A. is wet all year long.
B. contains some of the richest soil on the earth.
C. is home for mainly tree living animals.
D. is an open grassland with scattered shrubs and trees.



Question 15 As the latitude increases from the equator:

A. the angle at which the sun’s rays strike the Earth increases, and the climate is colder.
B. the angle at which the sun’s rays strike the Earth decreases, and the climate is colder.
C. the angle at which the sun’s rays strike the Earth decreases, and the climate is warmer.
D. the angle at which the sun’s rays strike the Earth increases, and the climate is warmer.


Question 16 Which of the following nonrenewable resources IS NOT a mineral?

A. lead
B. zinc
C. oil
D. iron


Question 17 What does a biogas machine use for fuel?

A. animal manure
B. coal
C. hot water
D. wind


Question 18 The introduction of certain inorganics such as nitrogen and phosphorus into a lake:

A. stimulate the growth of plants in the lake and causes the water to become clearer and better for recreational uses.
B. causes the death of all the plant species in the lake and causes the water to become clearer and better for recreational uses.
C. stimulates the growth of plants in the lake and eventually transforms the lake into a marsh.
D. causes the death of all the plant species in the lake and eventually transforms the lake into a marsh.

Question 19 When an oyster contains high concentrations of heavy metals even though it is living in water with relatively low concentrations of the metals, this is an example of:

A. eutrophication.
B. thermal pollution.
C. biological concentration.
D. biological magnification.

Question 20 A new form of hydropower called wave power uses:

A. the vertical motion of sea waves to turn a turbine.
B. hot water pumped from under the ocean to turn a turbine.
C. wind to turn a turbine.
D. water stored behind a dam to turn a turbine.

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