Semester Review Life Science 3: Question Preview (ID: 14967)


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