Need assistance with final…multiple choice, true/false and essay. Total 34 questions…need within 1.5hrs.Accuracy important…will rate you. Thank you.Question 1 (1 point)
Negatively charged particles are found where in an atom?
Question 1 options:
In multiple layers outside the nucleus
Both inside and outside the nucleus
In the nucleus
In a single layer outside the nucleus
Question 2 (1 point)
Which characteristic of water protects fish when a lake freezes?
Question 2 options:
cohesion
water is less dense as a solid
water as a solvent
all of the above
Question 3 (1 point)
You have a solution that has a pH of 8 and need it to be pH 5. What do you do?
Question 3 options:
Add a base
Add a buffer
Add water
Add an acid
Question 4 (1 point)
What characteristic of carbon makes it a good backbone for creating diverse and
durable molecules?
Question 4 options:
Carbon is a large atom.
Carbon forms four covalent bonds.
Carbon forms hydrogen bonds.
All of the above
Save
Question 5 (1 point)
The number of _______________ in the outer shell of an atom determines the type of
chemical bonds an atom can make.
Question 5 options:
neutrons
ions
protons
electrons
Question 6 (1 point)
The effectiveness of a medication containing growth hormone is tested on a group of
young male rabbits 3 weeks of age. The best control group would be:
Question 6 options:
any group of rabbits
no control is required; just measure whether the rabbits grew
a group of young female rabbits 3 weeks of age, not given the medication
a group of young male rabbits 3 weeks of age, not given the medication
Question 7 (1 point)
You find a cell of a type you have never seen before. The cell has both a nucleus and a
cell wall. Therefore, you conclude that it must be a ______ cell.
Question 7 options:
bacterial
prokaryotic
plant
animal
Question 8 (1 point)
The main function of a ribosome is to ____________________.
Question 8 options:
extract energy from glucose
synthesize glucose
store food in the form of fat
synthesize proteins
Question 9 (1 point)
You find a cell of a type you have never seen before. The cell has both a nucleus and a
cell wall. Therefore, you conclude, it must be a _______________ cell.
Question 9 options:
animal
bacterial
liver
plant
Question 10 (1 point)
The temperature optimum for an enzyme is 37C. What will most likely happen if you
increase the temperature from 37C to 50C?
Question 10 options:
The enzyme activity will decrease
The enzyme activity will not be affected
The enzyme activity will increase
The pH will increase
Question 11 (1 point)
Which of the following reactions or pathways is catabolic?
Question 11 options:
Converting glucose to carbon dioxide and water (cellular respiration).
Making ATP from ADP and Phosphate.
Making starch from many glucose molecules.
Photosynthesis: which builds glucose from carbon dioxide using energy from light.
Question 12 (1 point)
In a metabolic pathway, a typical control mechanism is to have: ________
Question 12 options:
a lack of reactant stimulate the pathway.
the final product inhibit an early step.
a reactant inhibit a late step.
the final product inhibit the enzyme responsible for its own production.
Question 13 (1 point)
One of the products of cellular respiration is ________.
Question 13 options:
cellulose
water
oxygen
sucrose
Question 14 (1 point)
Mitosis results in ______ cells and meiosis results in _______ cells.
Question 14 options:
haploid, diploid
diploid, diploid
diploid, haploid
haploid, haploid
Question 15 (1 point)
In beans yellow (Y) is dominant to green (y) and smooth (S) is dominant to wrinkled (s).
What are the possible genotypes for the offspring of the following cross: YySS and YYSs.
Question 15 options:
YYSS, YySS, YYSs, YySs
YS, yS, YS, yS
YYSS, YYss, yySS, yyss
Yy, SS, YY, Ss
Question 16 (1 point)
An ecologist is studying all the animals, plants, fungi and bacteria, as well as the
interaction among them, in a forest? He is studying the _________ in the forest.
Question 16 options:
community
niche
biome
population
Question 17 (1 point)
Which of the following is abiotic?
Question 17 options:
a rock
an animal
a protist
a plant
Question 18 (1 point)
In October of 2013, a raging wildfire swept through the mountain ecosystems in
Southern California, burning everything in its path to the ground and driving away all of
the animals. In order for the mountain ecosystem to re-establish itself, which member
of the food web has to return first?
Question 18 options:
deer
grasses
snakes
coyotes
Question 19 (1 point)
The gene pool of a population may change due to:
Question 19 options:
migration
genetic drift
natural selection and mutation
all of the above
Question 20 (1 point)
Any individual organism has the potential to adapt to its environment, if it is given
enough time and possesses a mechanism to generate variation.
Question 20 options:
True
False
Question 21 (1 point)
Once an adaptation appears, it remains in all the descendants unless the species
becomes extinct
Question 21 options:
True
False
Question 22 (1 point)
During a time when resources are abundant, one would not expect much evolutionary
change to happen.
Question 22 options:
True
False
Question 23 (1 point)
When a founder population has a small gene pool, evolutionary change is more likely to
be rapid than if the founder population has a large gene pool.
Question 23 options:
True
False
Question 24 (1 point)
When speciation occurs, the result is a dramatic change in the new species.
Question 24 options:
True
False
Question 25 (1 point)
When two groups are reproductively isolated, it can be predicted that speciation will
soon follow.
Question 25 options:
True
False
Question 26 (1 point)
Fossil evidence suggests that human ancestors arose one time in Africa.
Question 26 options:
True
False
Question 27 (1 point)
Levels of ultraviolet light influences vitamin D production is humans.
Question 27 options:
True
False
Question 28 (1 point)
Mitochondria and chloroplasts of eukaryotic cells are very similar to prokaryotes
True
False
Question 29 (1 point)
The human population may continue to increase even though it surpasses carrying
capacity.
True
False
Question 30 (1 point)
Scientific studies suggest that the many organs susceptible to cancer as a result of
smoking, the kidneys and bladder are exceptions, showing no differences in cancer rates
as compared to non-smokers.
Question 30 options:
True
False
Question 31 (10 points)
Your best friend returns from studying a year in Europe and informs you that she will
not ever eat GM foods. How would you respond to her? After having taking this class,
would you give her any advise in regards to her food choices, and her concerns?
Question 32 (10 points)
A population of pygmy-deer become re-established on an island after having been
absent for a very long time. They are given protective status, and flourish in numbers.
Then an unusually long and harsh winter happens. The deer are seen eating bark,
raiding bird feeders, and some die. Describe the density-dependent and density
independent factors at work here, and explain what might be happening to this
population.
Question 33 (10 points)
1 Describe the major land biome where you live. How have human activities changed
the landscape and how has this affected native species? Include specific
examples.
Question 34 (10 points)
1 You scoop up a water sample from a local pond nearby, because you are curious
about the possible microbes that might live there. After looking at several slides
that held drops of the sample, you noticed two different kinds of cells: One kind
was very small and had no separate internal structures; the other kind was much
larger, and it contained several kinds of internal structures that were physically
different from each other. Please name each cell and briefly describe their
overall similarities and differences.
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