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Anonymous asked in Science & MathematicsBiology · 1 decade ago

:( please help. i need to catch up in science. ill love you forever!?

1. What happens when an oncogene mutates?

A. The cell cycle slows down.

B. The cell cycle stops.

C. The cell cycle speeds up.

D. The body produces carcinogens.

2. What are growth factors?

A. Nutrients that give you energy

B. Proteins that are produced by cancer cells

C. Proteins that stimulate cell division

D. Compounds such as vitamins that help you grow

3. What term describes programmed cell death?

A. Metastasis

B. Apoptosis

C. Carcinogenesis

D. Cyclogenesis

4. How is a benign tumor different from a malignant tumor?

A. Malignant tumors do not spread; cells in a benign tumor break away and spread to other parts of the body.

B. Benign tumors perform the specialized functions needed by the body; malignant tumors do not.

C. Malignant tumors exert pressure on surrounding tissues; benign tumors do not.

D. Benign tumors do not spread; cells in a malignant tumor break away and spread to other parts of the body.

5. Which of the following is not a treatment for cancer?

A. Radiation therapy

B. Surgery

C. HeLa cells

D. Chemotherapy

true of false!

6. External factors that help regulate the cell cycle include physical and chemical signals

7. A growth factor is an internal signal that stimulates growth and division of cells.

8. Apoptosis occurs when internal or external signals activate genes that help produce self-destructive enzymes.

9. Cancer is the common name for a class of diseases characterized by controlled cell division.

10. An external factor that affects the cell cycle includes contact from other cells.

9 Answers

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  • 1 decade ago
    Favorite Answer

    1C

    2C

    3B

    4D

    5C HeLa cells are tumor cells derived from a woman Henrietta Lacks who did of cancer

    6T

    7T

    8T

    9F it is uncontrolled cell division

    10F

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  • 1 decade ago

    1. What happens when an oncogene mutates?

    This question is phrased quite strangely. I assume it means what happens when a proto-oncogene is mutated to an active, oncogenic form. If that's the case, it really depends on which oncogene we're talking about, but the general answer is C (though A and B may be true in some cases).

    2. What are growth factors?

    C is probably the answer your teacher is looking for, but many cancer cells produce growth factors, too.

    3. What term describes programmed cell death?

    B. Apoptosis is one form of programmed cell death.

    4. How is a benign tumor different from a malignant tumor?

    D. Benign tumors do not spread; cells in a malignant tumor break away and spread to other parts of the body.

    5. Which of the following is not a treatment for cancer?

    C. HeLa cells is a cell line derived from a tumor sample (cervical cancer; HeLa stands for Henrietta Lacks, the person who provided the sample and later died from her cancer).

    true of false!

    6. External factors that help regulate the cell cycle include physical and chemical signals

    True!

    7. A growth factor is an internal signal that stimulates growth and division of cells.

    False! Growth factors are secreted proteins that have to leave a cell before they can activate another or the same cell.

    8. Apoptosis occurs when internal or external signals activate genes that help produce self-destructive enzymes.

    True again!

    9. Cancer is the common name for a class of diseases characterized by controlled cell division.

    False! Uncontrolled cell division.

    10. An external factor that affects the cell cycle includes contact from other cells.

    True. Most cells are anchorage-dependent (meaning they have to adhere to other cells or a basement membrane in order to proliferate; most cells that detach die).

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  • 1 decade ago

    1. C

    2.C

    3.B

    4.D

    5. B..not sure!

    6. true

    7.true

    8. true (During apoptosis, a cell first produces the enzymes needed for self-destruction before shrinking to a characteristic spherical shape with balloon-like bumps on its outer surface. The enzymes break down its contents into small fragments which are easily digestible by surrounding cells.)

    9.false

    10. not sure

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  • 1 decade ago

    1. C

    2. D

    3. B

    4. D

    5. C

    6. True

    7. True

    8. True

    9. False

    10. False

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  • 1 decade ago

    i jus took that test the answers are

    1 C

    2 C

    3 B

    4 D

    5 C

    6 T

    7 F

    8 T

    9 F

    10 T

    Source(s): Insight test
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  • 1 decade ago

    These questions are easy. I'm sorry sweetie but how are you gonna learn if you don't do the work yourself? Just wikipedia everything. Trust me...it's all on there.

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  • 1 decade ago

    As much as I would like to help you, YahooAnswers is NOT a place for others to do homework for you.

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  • i agree with tiny :)

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  • 3.B

    4.D

    5.C

    8.T

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