Our Effects Quiz

A  the dominant herbivorous organisms of a region

B  global patterns of atmospheric circulation

C  the intensity of a solar radiation

D  global patterns of oceanic circulation

A  The population may shoot past its carrying capacity too quickly and then crash

B  The population will slowly decline until it reaches its carrying capacity and fluctuate at about that number

C  Both a) and d) are possible

D  The level of resources in the habitat will increase equally

E  The carrying capacity will increase

A  10,000

B  100

C  10

D  2,000

E  100

A  The nitrogen cycle is NOT important biologically: the atmosphere is composed of 78% nitrogen, so nitrogen is freely available to all living organisms regardless of where it is in its cycle

B  nitrogen is a component of amino acids, proteins, and nucleic acids.

C  nitrogen is a major constituent of phospholipids, ATP, and other energy-storing molecules

D  photosynthesis by plants and phytoplankton removes substantial amounts of atmospheric nitrogen

E  nitrogen forms the framewok for organic molecules essential to all organisms

A  sugars

B  work

C  substrates

D  enzymes

A  in a forest that had burned to bare ground

B  on an island that has just risen out of the ocean

C  on the surface of recently cooled lava

D  on bare ground exposed by the retreat of a glacier

A  The sugars made during photosynthesis are building blocks of DNA

B  All cells must have chloroplasts in order to survive

C  Photosynthesis captures energy that other organisms access when they eat either plants or organisms that eat plants

D  All other organisms require carbon dioxide for life processes

A  S-shaped population curve

B  C-shaped population curve

C  oscillating cycle

D  J-shaped population curve

A  tropical forests

B  temperate forests

C  estuaries

D  deserts

A  The communities would be statistically indistinguishable from one another.

B  Prey species, such as mussels, would decline, but most species within the community would be unaffected.

C  Other predators will simply replace P.ochraceus and take advantage of prey that P.ochraceus consumed

D  Sea star prey, such as mussels, might increase in abundance and crowd out other community members

A  it has occurred relatively rapidly

B  it has occurred relatively slowly

C  CO2 reacts so quickly with other compounds that it should not be occurring

D  there is no known mechanism for its occurrence

A  oxidized to make sugars

B  provided by carbon dioxide

C  extracted from DNA

D  provided by enzymes

A  restrict the distribution of their prey

B  quickly alter the behavior of their prey

C  cause the abundance of their prey to rise

D  drive their prey to extinction

A  Seeds are eaten by a tufted titmouse, the titmouse is eaten by a hawk, the hawk eggs are eaten by snakes, and the snakes are eaten by owls.

B  Goats eat grass; the goats are milked and eaten by humans

C  Seeds and grasses are eaten by various insects and small herbivores, the insects are eaten by a meadowlark, the small herbivores are eaten by a hawk, the meadowlark and the hawk eggs are eaten by snakes, and the snakes are eaten by owls.

D  Seeds are eaten by sparrow, the sparrow is eaten by a hawk, and the hawk’s eggs are eaten by a snake.

A  logiistic growth

B  density-independent

C  exponential growth

D  density-dependent