Cumulative Exam — Cumulative exam Answers

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Turner syndrome occurs in females who instead of having two X chromosomes have either only one X chromosome or a fragmented X chromosome. Klinefelter syndrome occurs in males who have multiple X chromosomes. Consider the karyotype.Which individual is shown in the karyotype?

Question illustration
A
male with Turner syndrome
B
male with Klinefelter syndrome
C
female with Turner syndrome
D
female with Klinefelter syndrome
2
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The figures below refer to a herd of water buffalo.Birth rate = 35 Death rate = 7Immigration = 4 Emigration = 17What is this population growth?

A
population increases by 41
B
population decreases by 15
C
population increases by 15
D
population decreases by 24
3

The organic compound below consists of an adenine molecule (blue), a ribose (purple), and three phosphate groups (orange).Which compound is shown?

Question illustration
A
chlorophyll
B
ferredoxin
C
ATP
D
NADPH
4

Which organism is an animal-like protist?

A
cilia
B
dinoflagellate
C
amoeba
D
truffle
5

Which is most likely a source of air pollution?

A
littering
B
CFCs
C
oil spill
D
runoff
6

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
7

Some animals shiver as a natural, involuntary response to their environment. Shivering generates heat. This is an example of which function?

A
reducing movement to regulate body temperature
B
reducing movement to regulate blood glucose
C
maintaining homeostasis by regulating body temperature
D
maintaining homeostasis by regulating blood glucose
8

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.
9

During which process is mRNA synthesized from a DNA template with the aid of RNA polymerase?

A
transcription
B
translation
C
translocation
D
transportation
10

Which statement best describes the relationship between proteins and nucleic acids?

A
Proteins read the instructions that are contained in nucleic acids.
B
Nucleic acids synthesize the amino acids for protein construction.
C
Nucleic acids provide the blueprint for the construction of proteins.
D
Proteins are composed of nucleic acids.
11

Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Patau syndrome occurs when an individual has an extra copy of chromosome 13, giving them three copies. Symptoms of Patau syndrome include extra digits, seizures, and cleft palate. Which word would geneticists use to describe the cause of Patau syndrome?

A
diploidy
B
homologous
C
heterozygous
D
trisomy
12

Which of the following could be a nucleotide of DNA?

A
deoxyribose + phosphate group + thymine
B
deoxyribose + phosphate group + uracil
C
ribose + phosphate group + thymine
D
ribose + phosphate group + uracil
13

A scientist measured an increase in nitrous oxide in the atmosphere. This increase would result in

A
an increase in the greenhouse effect.
B
a decrease in the greenhouse effect.
C
no change in the greenhouse effect.
D
a stabilization of the greenhouse effect.
14

In which plants' life cycle does double fertilization occur?

A
seedless plants
B
nonvascular plants
C
gymnosperm plants
D
angiosperm plants
15

A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which type of limiting factor causes this?

A
density dependent
B
density independent
C
population dependent
D
population independent
16

Consider this statement taken from a student's lab report.Since the hypothesis was supported, I learned that butterflies are attracted to red flowers more than to yellow flowers. More research could be done to compare the relative attraction of different pairs of colors in order to figure out what the best colors are to attract butterflies.From which section of the lab report did the above statement most likely come?

A
Analysis
B
Background Research
C
Conclusion
D
Purpose
17

Which type of process occurred in the ecosystem that was affected by the 1988 fires in Yellowstone Park, which destroyed most of the vegetation but left the soil intact?

A
primary succession
B
secondary succession
C
a climax community
D
species extinction
18

Which statement is most accurate about alternation of generations?

A
It involves changing the total number of chromosomes in a plant cell.
B
It refers to the haploid and diploid phases of the plant life cycle.
C
It refers to the processes of meiosis and fertilization.
D
It involves only some of the seedless vascular plants.
19

Which organisms are prokaryotes?

A
archaea
B
fungi
C
protists
D
plants
20

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.

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