Our Effects Quiz

A  the intensity of a solar radiation

B  the dominant herbivorous organisms of a region

C  global patterns of oceanic circulation

D  global patterns of atmospheric circulation

A  The level of resources in the habitat will increase equally

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

C  Both a) and d) are possible

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

E  The carrying capacity will increase

A  100

B  2,000

C  10,000

D  100

E  10

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

B  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

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

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

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

A  sugars

B  enzymes

C  work

D  substrates

A  on bare ground exposed by the retreat of a glacier

B  in a forest that had burned to bare ground

C  on the surface of recently cooled lava

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

A  The sugars made during photosynthesis are building blocks of DNA

B  All cells must have chloroplasts in order to survive

C  All other organisms require carbon dioxide for life processes

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

A  S-shaped population curve

B  C-shaped population curve

C  J-shaped population curve

D  oscillating cycle

A  temperate forests

B  estuaries

C  deserts

D  tropical forests

A  The communities would be statistically indistinguishable from one another.

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

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

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

A  there is no known mechanism for its occurrence

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

C  it has occurred relatively slowly

D  it has occurred relatively rapidly

A  provided by carbon dioxide

B  oxidized to make sugars

C  extracted from DNA

D  provided by enzymes

A  cause the abundance of their prey to rise

B  quickly alter the behavior of their prey

C  drive their prey to extinction

D  restrict the distribution of their prey

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

B  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.

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

A  logiistic growth

B  density-independent

C  density-dependent

D  exponential growth