AnswersEAP-Biology A CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

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21
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Sucrose is made of which simple sugars?

A
glucose and fructose
B
fructose and galactose
C
galactose and cellulose
D
cellulose and glucose
22
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Which is an advantage of flowering plants?

A
Flowers attract insects that transport gametes.
B
Flowers give greater access to sunlight.
C
Flowers help transport water and nutrients.
D
Flowers assist plants that live in the water.
23

What is one purpose for the peer-review process in scientific research?

A
to make scientific research progress more quickly
B
to verify that the conclusions are supported by the data
C
to allow anyone to submit their research to scientific journals
D
to ensure that only established tools and techniques are used
24

What is the purpose of controlling the environment when testing a hypothesis?

A
It allows the scientist to determine the effect of the changed variable.
B
It allows samples and organisms to be tested under comfortable conditions.
C
It makes it easier for the scientist to perform the steps of the experiment.
D
It ensures that the scientist is undisturbed while performing the experiment.
25

During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator?

A
It begins transcription.
B
It begins translation.
C
It cannot attach to enzyme 1.
D
It cannot attach to the promoter.
26

Which statement best distinguishes plant cells and animal cells?

A
There are more ribosomes in animal cells than in plant cells.
B
Plant cells have more lysosomes than animal cells have.
C
Plant cells have large vacuoles, and animal cells do not.
D
The position of the nucleus in the cells is different in plants and animals.
27

A scientist tracked the summer eating habits of brown bears. His results are shown in the graph below.If the brown bears’ reliance on leaves increased by 14 percent, how would the combined total of all the percentages be affected?

Question illustration
A
It would increase by 14 percent.
B
It would decrease to 86 percent.
C
It would remain at 100 percent.
D
It would change to 114 percent.
28

Before raw data can be used as scientific evidence, it must be analyzed and summarized. One way of summarizing data is to find the mean, or average, of a set of data points. What method is used for calculating the mean?

A
adding the values of all the data points and dividing by the number of data points
B
dividing the value of each data point by the total value of all the data points
C
multiplying the values of the highest and lowest data point, and then dividing by two
D
subtracting the highest value among the data points from the lowest value
29

Which is a scientific question?

A
Can cats learn to sit down on command?
B
Why do black cats bring bad luck?
C
Are spotted cats cuter than solid-colored cats?
D
Why are Persian cats so funny?
30

A drug researcher could avoid risking human health in tests of new drugs by

A
applying the new drugs to cultures of human cells and observing the effects.
B
using computers to select and notify potential subjects for tests on the new drugs.
C
conducting a trial on patients, using only very small dosages and short lengths of exposure to the new drugs.
D
only testing the new drugs on volunteer subjects who have tried all available treatments with no success.
31

During which process is ethanol produced?

A
lactic acid fermentation
B
alcohol fermentation
C
citric acid cycle
D
electron transport chain
32

What is the first way in which biology researchers present the results of their latest research?

A
through an article published in the newspaper
B
through an e-mail addressed to the scientific community
C
through an interview given to a local TV news reporter
D
through an article published in a scientific journal
33

What is likely to happen to a healthy population that is experiencing exponential growth?

A
It will eventually reach its carrying capacity.
B
It will experience a population crash.
C
It will go extinct in the near future.
D
It will continue to grow exponentially indefinitely.
34

Cory recorded the following values when he measured the length of leaves from one tree.Length in centimeters: 8, 11, 9, 10, 10, 9, 6In what range of data is the length of the next leaf that Cory measures most likely to fall?

A
1 to 5 cm
B
6 to 11 cm
C
9 to 10 cm
D
12 to 18 cm
35

Which is accurate about the six kingdoms?

A
One is eukaryotic, and five are prokaryotic.
B
Four are eukaryotes, and two are prokaryotes.
C
Four are prokaryotes, and two are eukaryotes.
D
Three are eukaryotes, and three are prokaryotes.
36

Which of these can be found in both gymnosperms and angiosperms?

A
vascular tissue and exposed seeds
B
vascular tissue and seeds
C
flowers and vascular tissue
D
enclosed seeds and flowers
37

Why is water considered to be abiotic?

A
because it is not part of the biosphere
B
because it came from something living
C
because it is dead
D
because it is not living and never lived
38

A zygote consists of how many cells?

A
one
B
two
C
four or five
D
eight or ten
39

The first strands of DNA were observed through which microscope?

A
tunneling microscope
B
simple microscope
C
compound light microscope
D
electron microscope
40

What happens to excess carbohydrates in animals?

A
They are stored as fat.
B
They are stored as protein.
C
They are stored in nucleic acids.
D
They are stored as sugar.

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