7212118
Description
Quiz by Jack Alkema, updated more than 1 year ago
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Created by Jack Alkema
almost 8 years ago
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Question 1
Question
When cells are grown in a laboratory, which of the following is a factor that can stop normal cells from dividing?
Answer
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a cut in the skin
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contact with other cells
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growth factors
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injection of cyclin
Question 2
Question
In eukaryotic cells, the timing of the cell cycle is regulated by
Answer
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cyclins
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centrioles
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spindle fibers
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the nuclear envelope
Question 3
Question
Cyclins are a family of closely related proteins that
Answer
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produce p53.
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cause cancer.
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work to heal wounds.
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regulate the cell cycle.
Question 4
Question
Which of the following are external regulators of the cell cycle?
Answer
-
cancer cells
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cyclins
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growth factors
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mitotic spindles
Question 5
Question
Cancer is a disorder in which some cells have lost the ability to control their
Answer
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surface area
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size
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spindle fibers
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growth rate
Question 6
Question
Cancer cells form masses of cells called
Answer
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tumors
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cyclins
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growth factors
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p53
Question 7
Question
A cell with a defective p53 gene is likely to
Answer
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generate hormones that combat tumors.
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stop responding to growth regulators.
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produce cells without a defective p53 gene.
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stop dividing to produce daughter cells.
Question 8
Question
During early development, all cells in the embryo of a multicellular organism are identical. Later on in development, the cells will become specialized through a process called
Answer
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differentiation
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cytokinesis
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apoptosis
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interphase
Question 9
Question
Why are stem cells important?
Answer
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They have the potential to undergo cell division.
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They have specialized DNA.
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They have the potential to develop into other cell types.
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They are incapable of becoming cancer cells.
Question 10
Question
Which of the following is a possible future benefit of stem cell research?
Answer
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increasing a person’s intelligence quotient
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generating embryos from nonliving tissue
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developing a vaccine for cancer
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reversing damage from a heart attack
Question 11
Question
Nerve cells are cells that have not yet undergone differentiation.
Answer
- True
- False
Question 12
Question
Stem cells taken from embryos are totipotent.
Answer
- True
- False
Question 13
Question
During normal development, the cells between toes and fingers die by [blank_start]____________________[blank_end], a process of programmed cell death.
Answer
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Apoptosis
Question 14
Question
Harvesting [blank_start]____________________[blank_end] stem cells from a willing donor is not as controversial as harvesting techniques that involve the destruction of an embryo.
Answer
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adult
Question 15
Answer
-
A
-
B
Question 16
Question
Which diagram has a defected p53 gene?
Answer
-
A
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B
Question 17
Question
How can the cancer cells be treated?
Answer
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Chemotherapy
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Radiation
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Surgically removing the tumor
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All of the above
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