AnswersFL-2000310-Biology 1 ACumulative Exam

Cumulative Exam — Cumulative exam Answers

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21
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Omar studies the effects of a drought on the depth of water in a pond. He takes a reading of the water depth at the same location in the pond every day for the duration of the drought. Which method of displaying data would he most likely use to show changes in water depth?

A
a bar graph
B
a line graph
C
a data table
D
a pie graph
22
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Katie wants to make ball-and-stick models of the four macromolecules. She has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogenIn which macromolecule will she use the black, red, and purple balls in a ratio of 1:2:1?

A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
23

How many homologous chromosome alignments are possible for independent assortment during meiosis?

A
one
B
two
C
three
D
four
24

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?

A
Both produce proteins.
B
Both contain mitochondria.
C
Both provide structure to cells.
D
Both perform photosynthesis.
25

Mitosis is important because it allows

A
new cells to replace old damaged cells.
B
new cells to repair old damaged cells.
C
old cells to self-repair when they become damaged.
D
existing cells to take over the function of damaged cells.
26

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
27

Francine makes several measurements of the mass of a metal block. The data set is shown in the table below.MeasurementMass of metal block (g)120.73220.76320.68420.75After analyzing this data set, Francine calculates a value of 20.73 g. Which of these characteristics has been calculated?

A
mean
B
median
C
mode
D
range
28

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
29

Which organisms in the chart can produce ATP by photosynthesis?OrganismCells contain chloroplastsAlgaeXAmoebas Mushrooms Oak treesXBermuda grassX

A
All of these organisms produce ATP by photosynthesis.
B
None of these organisms produce ATP by photosynthesis.
C
Only amoebas and mushrooms produce ATP by photosynthesis.
D
Only algae, oak trees, and Bermuda grass produce ATP by photosynthesis.
30

Mutations within an organism can occur in body cells or reproductive cells. Which type of mutation is seen in a sperm cell but not in a skin cell?

A
somatic mutation
B
missense mutation
C
nonsense mutation
D
germline mutation
31

A class was performing an experiment to discover the pH values of some common household substances. The results of three groups are shown in the table below.SubstanceGroup 1 pHGroup 2 pHGroup 3 pHLemon juice2.22.22.1Vinegar2.82.88.2Baking soda8.48.58.4Milk of magnesia10.210.310.2Which statement best describes evidence that Group 3’s data are less valid than the data for the other two groups?

A
Group 3’s pH value for lemon juice is lower than the values of the other two groups.
B
Group 3’s pH value for vinegar is much higher than the values of the other two groups.
C
Group 3’s pH value for baking soda does not exactly match the values of the other two groups.
D
Group 3’s pH value for milk of magnesia is different from the value obtained by Group 2.
32

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.
33

Which is the most efficient way to avoid DNA mutations from UV radiation?

A
Avoid getting X-rays at the doctor’s office.
B
Avoid protective shields during X-rays.
C
Avoid UV radiation by wearing sunscreen.
D
Avoid UV radiation by using a tanning bed.
34

Look at the picture below.What macromolecules make up most of the structure that is shown?

Question illustration
A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
35

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
36

Read the following question.“How fast do hummingbirds fly?”Why is the question a scientific question?

A
It expresses an opinion.
B
It can be tested during field studies.
C
It can be answered without an investigation.
D
It asks about phenomena that cannot be measured.
37

Mitosis is divided into phases.Which phase of mitosis is shown in the diagram?

Question illustration
A
anaphase
B
metaphase
C
telophase
D
prophase
38

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.
39

In an experiment to test a new drug’s effectiveness, one group is given a larger dosage than is typically prescribed, and a second group is given a smaller dosage than is typically prescribed. Then, the results of the groups are compared to each other. What is missing that would improve this scientific design?

A
a control group
B
a second independent variable
C
a dependent variable
D
an independent variable
40

Which is required for sexual reproduction?

A
mitosis
B
binary fission
C
diploid cell production
D
meiosis

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