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Exam 8: Cellular Reproduction: Cells from Cells

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Question 31

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What is the difference between a benign and a malignant tumor?

A) Benign tumors are composed of cancer cells; malignant tumors are not.
B) Benign tumors are not the result of a failure of a cell cycle control system; malignant tumors are.
C) Benign tumors do not metastasize; malignant tumors do.
D) Benign tumors do not form lumps; malignant tumors do form lumps.

E) None of the above
F) A) and D)

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Question 32

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How many chromosomes can a gamete possess as a result of nondisjunction?

A) n + 1 or n - 1
B) 2n + 1 or 2n - 1
C) 2n - 1 only
D) 2n + 1 or n - 1

E) A) and B)
F) A) and C)

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Question 33

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Genetic variation is accomplished by all but one of the following.Choose the exception.

Which of the following will help prevent cancer and increase survival?

-This diagram of the human life cycle shows that ________.

For a species with four pairs of chromosomes,________ chromosome combinations are possible.

Examine the figure below.Nucleosomes are made of ________.

During metaphase,________.

Chromatin consists of ________.

What chromosomes belong to a normal human male?

Scenario Questions Please read the following paragraph and answer the following questions. Amanda's parents realized that her body was not developing properly about the time she was 12 years old. She was shorter than most of her friends and was not going through changes normally associated with female puberty. They took her to a doctor who initially diagnosed Amanda with Turner Syndrome because of her physical features. He ordered a karyotype that confirmed his diagnosis. Amanda was born with only one X chromosome. Although there is no specific cure, the doctor was able to treat her and correct some of the problems associated with the condition. For example, she received growth hormone to improve her growth and estrogen to help her develop the physical changes of puberty. -If only some,but not all,of Amanda's somatic (body) cells had only one X chromosome,this could indicate that an error occurred ________.