Would need all these answered in the next 3 hours

26 Jun Would need all these answered in the next 3 hours

Question
Quiz
Note: It is recommended that you save your response as you complete each question.

Question 1 (1 point)

Which of the following structures can be found together in eukaryotic cells?
Question 1 options:

cytoplasm and ribosomes
cytoplasm and plasma membrane
DNA and ribosomes
ribosomes and endoplasmic reticulum
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Question 2 (1 point)

Mitosis results in ______ cells and meiosis results in _______ cells.
Question 2 options:

haploid, diploid
diploid, haploid
diploid, diploid
haploid, haploid
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Question 3 (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 3 options:

YYSS, YYss, yySS, yyss

YS, yS, YS, yS
Yy, SS, YY, Ss
YYSS, YySS, YYSs, YySs
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Question 4 (1 point)

Red rose color is incompletely dominant over white rose color. If a red rose is crossed with a pink rose,
what percentage of the offspring will be pink?
Question 4 options:

100
75
50
25
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Question 5 (1 point)

One of the products of cellular respiration is ________.
Question 5 options:

water
sucrose
cellulose
oxygen
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Question 6 (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 6 options:

niche
biome
community
population
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Question 7 (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 7 options:

The enzyme activity will not be affected
The enzyme activity will increase
The enzyme activity will decrease
The pH will increase
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Question 8 (1 point)

An ecosystem can be characterized as:
Question 8 options:

populations + community.
all species, population, and community interactions for organisms in a given area.
the abiotic components of the environment.
all of the biological interactions, plus interactions with the abiotic environment, in a
given area.
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Question 9 (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 9 options:

True
False
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Question 10 (1 point)

Humans are more likely to be infected by viruses after the viruses had a chance to multiply outside the
body on surfaces touched by infected people.
Question 10 options:

True
False
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Question 11 (1 point)

Once an adaptation appears, it remains in all the descendants unless the species becomes extinct
Question 11 options:

True
False
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Question 12 (1 point)

During a time when resources are abundant, one would not expect much evolutionary change to happen.
Question 12 options:

True
False
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Question 13 (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 13 options:

True
False
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Question 14 (1 point)

When speciation occurs, the result is a dramatic change in the new species.
Question 14 options:

True
False
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Question 15 (1 point)

When two groups are reproductively isolated, it can be predicted that speciation will soon follow.
Question 15 options:

True
False
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Question 16 (1 point)

Fossil evidence suggests that human ancestors arose one time in Africa.
Question 16 options:

True
False
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Question 17 (1 point)

Levels of ultraviolet light influences vitamin D production is humans.
Question 17 options:

True
False
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Question 18 (1 point)

Mitochondria and chloroplasts of eukaryotic cells are very similar to prokaryotes
Question 18 options:

True
False
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Question 19 (1 point)

Organisms that live in habitats with high levels of competition are more likely to produce defensive
chemicals than those that live with little competition.
Question 19 options:

True
False
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Question 20 (1 point)

The human population may continue to increase even though it surpasses carrying capacity.
Question 20 options:

True
False
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Question 21 (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 21 options:

True
False
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Question 22 (1 point)

A womans ovum will complete Meiosis II only, if fertilization has occurred.
Question 22 options:

True
False
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Question 23 (1 point)

One human disease is caused by a change in the DNA from GAA to GUA. This change is an example of:
Question 23 options:

crossing over
a mutation
a meiosis error
a mitosis error
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Question 24 (1 point)

The main function of a ribosome is to ____________________.
Question 24 options:

extract energy from glucose
synthesize glucose
store food in the form of fat
synthesize proteins
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Question 25 (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 25 options:

any group of rabbits
a group of young male rabbits 3 weeks of age, not given the medication
a group of young female rabbits 3 weeks of age, not given the medication

no control is required; just measure whether the rabbits grew
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Question 26 (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 26 options:

liver
animal
bacterial
plant
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Question 27 (1 point)

The gene pool of a population may change due to:
Question 27 options:

migration
genetic drift
natural selection and mutation
all of the above
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Question 28 (15 points)

1. 1.

You have read that inorganic fertilizers contribute to water pollution and would like to make a
switch from inorganic fertilizers to organic compost in your vegetable garden. A friend graciously
gives you a truck load of his compost. As a good researcher and critical thinker you are not
convinced that organic compost will yield the same results as the inorganic fertilizer you have
used for years with good results. To draw your own conclusion based on scientific evidence you
decide to conduct an experiment in your garden. (a) State an APPROPRIATE hypothesis, design

an experiment including (b) test subjects, (c) sample size, (d) control(s), (e) dependent and (f)
independent variables, (g) type of data collecte) and (h) hypothetical results/conclusion. (i) Does
your conclusion support the hypothesis? Explain.
Question 28 options:

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Question 29 (12 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 (a) distinguisheach type of cell;
(b) describe their 3 major similarities and (c) 3 major differences.
Question 29 options:

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Question 30 (4 points)

Describe at least one MAJOR characteristic that is shared by all things that are alive. Explain your choice
Question 30 options:

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Question 31 (5 points)

(a) Define hypothesis and explain how an hypothesis is constructed (in other words, what role does it play
in the scientific method?)
(b) Explain why an hypothesis is never proven.
Question 31 options:

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Question 32 (6 points)

(a) Define enzyme and list 3 factors which can alter enzymatic activity.
Question 32 options:

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Question 33 (8 points)

Regarding cellular respiration and photosynthesis, discuss (a) 2 similarities and (b) 2 differences in the
two processes.
Question 33 options:

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Question 34 (6 points)

Discuss the evolutionary advantages of sexual (as opposed to asexual) reproduction?
Question 34 options:

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Question 35 (6 points)

(a) Define meiotic nondisjunctionand (b) discuss the consequences of meiotic nondisjunction.
Question 35 options:

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Question 36 (6 points)

In what ways might genetically engineered organisms threaten the health and safety of human
populations?
Discuss 2 specific examples.
Question 36 options:

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Question 37 (5 points)

Discuss how (not why) bacteria that produce infections in humans become resistant to antibiotics. Be
detailed/specific.
Question 37 options: