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Semester Review Life Science 3
Test Description: Spring 2013--Part 3 of 6
Instructions: Answer all questions to get your test result.
1) What chromosomes belong to a normal human male for a total of 46?
A
44 autosomes, one X chromosome, and one Y chromosome
B
46 autosomes, one X chromosome, and one Y chromosome
C
22 autosomes and 2 X chromosomes
D
22 autosomes and two Y chromosomes
2) What chromosomes belong to a normal human female for a total of 46?
A
44 autosomes and 2 X chromosomes
B
44 autosomes, one X chromosome, and one Y chromosome
C
22 autosomes and 2 X chromosomes
D
46 autosomes and two X chromosomes
3) Inheritance of certain genes increases the risk of getting certain cancers; thus, it can be said that ______.
A
predisposition to these cancers is inherited
B
(for these individuals) lifestyle will have little impact on cancer risk
C
these cancers are inherited as a dominant trait
D
mutations that occur in somatic cells can be passed from parent to offspring
4) Which of the following will help prevent cancer and increase survival?
A
Limit exercise.
B
Seek early detection of tumors.
C
Eat a low-fiber, low-fat diet.
D
Smoke only cigarettes.
5) What is the difference between a benign and a malignant tumor?
A
Benign tumors do not metastasize; malignant tumors do.
B
Benign tumors aren't the result of a failure of a cell cycle control system; malignant tumors are
C
Benign tumors are composed of cancer cells; malignant tumors are not.
D
Benign tumors do not form lumps; malignant tumors do form lumps.
6) ____________ is(are) responsible for more cancers than any other carcinogen.
A
Tobacco
B
X-rays
C
Asbestos
D
UV radiation
7) More people die of ______ cancer than of any other cancer.
A
pancreatic
B
breast
C
skin
D
lung
8) Which of these lifestyle choices will INCREASE cancer risk?
A
quitting smoking
B
spending more time in the sun
C
a diet low in plant fiber
D
jogging
9) On a karyotype, Trisomy 21 (Down Syndrome) is represented by
A
abnormal sex chromosomes
B
3 chromosomes on the 21st grouping
C
21 chromosomes on the 3rd grouping
D
Turner Syndrome
10) Meiosis results in
A
the formation of four haploid daughter cells
B
the formation of diploid gametes
C
the human 2n number is 4
D
the formation of two haploid daughter cells
*select an answer for all questions
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