Examen
ENSC Final Graded A+|Q&A’s Verified
ENSC Final Graded A+|Q&A’s Verified
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ENSC Final Graded A+|Q&A’s VerifiedMost of the energy captured by photosynthesis is stored in chemical bonds in - ✔✔glucose
Which one of the following is a molecule but not a compound? - ✔✔O2
Take a big breath of air. You have not inhaled any - ✔✔minerals
Chemical methods to extract some usable energy from glucose molecules without using oxygen
are possible and used by many organisms. However, cell respiration reactions using oxygen are
more common because using oxidative respiration - ✔✔idk
You sit comfortably in your room studying and notice that the air temperature is fluctuating
considerably. Perhaps the air conditioning system is not well regulated. Sometimes it gets too
hot and you sweat while other times you get so cold that you shiver. When you are sweating or
shivering, you are exhibiting your - ✔✔limits of tolerance.
Sometimes people say that plants make energy from the sun. However, plants make sugars
using sunlight. Stating that plants make energy is actually - ✔✔a violation of the first law of
thermodynamics.
Some birds have been seen to consume certain soils in what is called geophagy. In some cases,
the soils help the birds digest toxins that occur in their diets. These birds eating soil represent a
member of the - ✔✔biosphere consuming a component of the lithosphere.
Watering and fertilizing plants in your home provides them with components of the -
✔✔lithosphere and hydrosphere.
Energy - ✔✔idk
,In most energy conversions, such as burning coal to produce heat, - ✔✔entropy increases
because of heat released in the conversion.
Which of the following statements is not true of the sulfur cycle? - ✔✔Unlike nitrogen and
carbon, organisms do not require or contain sulfur.
An average person might consume 2,000 Kilocalories of food in one day. This is enough energy
to heat up how many 2-liter bottles of liquid water from 0 degrees Celsius to 100 degrees
Celsius (just reaching the boiling point of water, but not turning the water into steam)? -
✔✔10
The reindeer population changes on St. Matthew Island appears to have ultimately been caused
by - ✔✔the absence of any predators.
Resource partitioning - ✔✔reduces interspecific competition and increases species diversity.
Which of the following represents a type of mutualism? - ✔✔A honeybee feeds on nectar at
a flower on an orange tree and pollinates the flower.
A stable population would remain at equilibrium if - ✔✔births and deaths increased by the
same number of organisms.
A group of frogs in a rain forest represents a population if the frogs - ✔✔live in the same
region and can potentially reproduce with each other.
The separate feeding locations of these five warbler species on different portions of the same
tree illustrates - ✔✔resource partitioning.
In North America, a toxic weed called leafy spurge was accidentally introduced and has grown
and spread rapidly, covering millions of acres in north central United States and south central
, Canada. Leafy spurge is generally avoided by cattle and horses and may be toxic to them. Thus,
rangeland where leafy spurge has spread has been damaged by the invasion of this plant.
Flea beetles alone are unlikely to eliminate all of the leafy spurge in a region. Instead, the
number of leafy spurge plants and the number of flea beetles in a particular community may
stabilize. At this point, the leafy spurge and flea beetle populations - ✔✔are experiencing
environmental resistance.
The risk of introducing a natural enemy to control an invasive species is that - ✔✔the natural
enemy might also become a pest.
A population of bullfrogs in a pond produces many thousands of eggs each spring that hatch
out into tadpoles. However, only about 1% of the tadpoles survive to reproduce. This
population of frogs is experiencing - ✔✔low levels of recruitment.
It is common to hear about the huge reproductive potential of some organisms. Perhaps
someone has mentioned that if all of the eggs of houseflies were to survive to maturity, the
world would soon be covered in flies. This does not happen because, in reality, - ✔✔the
biotic potential would be limited by environmental resistance.
Which one of the following is a trait that increases the chances of survival for an endangered
species? - ✔✔widespread distribution
Two species have separate ranges but use the same food resources. However, their ranges
overlap in one area. It is found in the area of overlap the species have evolved separate
anatomical specializations that reduce interspecific competition for food. This is an example of -
✔✔character displacement.
Productivity of an ecosystem is best determined by the - ✔✔idk
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