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20 Cards in this Set
- Front
- Back
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Consider a cell that underwent mitosis but not cytokinesis. The result would be
- daughter cells with no nucleus. - a cell with one nucleus containing twice the normal number of chromosomes. - a cell with two nuclei. - daughter cells with too few chromosomes. |
a cell with two nuclei.
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Bacteria are single cells that replicate themselves by binary fission, resulting in genetically identical daughter cells. These cells undergo
- condensation. - fertilization. - asexual reproduction. - sexual reproduction. |
asexual reproduction.
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The term "semiconservative replication" refers to the fact that
- the DNA molecule includes a parental strand and newly created DNA strand. - the mode of DNA replication is only tentatively described. - DNA is created from only four of nine available nucleotides. - DNA is not just one strand but two complementary strands. |
the DNA molecule includes a parental strand and newly created DNA strand.
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Which of the following can neutralize dangerous free radicals within the body?
- nucleotides from DNA - carbohydrates from dietary rice and pasta - hormones from the ovaries and testes - antioxidants from dietary fruits and vegetables |
antioxidants from dietary fruits and vegetables
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Most cells spend most of their time in which phase?
- prophase - interphase - anaphase - metaphase |
interphase
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The most common type of cancer that people in the United States die from is
- skin cancer. - breast cancer. - prostate cancer. - lung cancer. |
lung cancer.
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Which type of cell division produces daughter cells that are identical to the original cell?
- meiosis in bacteria - meiosis in animals - meiosis in plants - mitosis in animals |
mitosis in animals
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Which of the following is a common feature of cancer cells?
- metastasis - controlled division - contact inhibition - anchorage dependence |
metastasis
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What is the name of the process by which cancer cells break off of tumors and spread to other parts of the body?
- mutagenesis - metastasis - carcinogenesis - angiogenesis |
metastasis
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Different versions of the same gene are called
- diploids. - sister chromatids. - alleles. - homologous chromosomes. |
alleles.
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During which phase of mitosis do sister chromatids separate to opposite poles of the cell?
- prophase - telophase - anaphase - metaphase |
anaphase
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Which of the following is the correct order of events in the cell cycle?
- G1, G2, S, mitosis, cytokinesis - S, G1, G2, cytokinesis, mitosis - G1, S, G2, mitosis, cytokinesis - S, G1, G2, mitosis, cytokinesis |
G1, S, G2, mitosis, cytokinesis
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Which of the following is not a known carcinogen?
- pet dander - certain viruses - cigarette smoke - ultraviolet light |
pet dander
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During which phase of mitosis does the cytoplasm divide?
- metaphase - anaphase - prophase - telophase |
telophase
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The members of a pair of nonsex chromosomes are called
- alleles. - homologous chromosomes. - gametes. - diploids. |
homologous chromosomes.
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What term describes a harmless, noncancerous or precancerous tumor?
- carcinogenic - benign - malignant - metastatic |
benign
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Cancer cells within which of the following biopsy samples would be the best indicator that the cancer has metastasized and is circulating through the bloodstream?
- liver - ovary - lymph node - pancreas |
lymph node
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A scientist who observes cancer cells under a microscope would likely see
- large growths containing fluid. - orderly rows of cells. - disorganized cells. - cells that are much smaller than normal cells. |
disorganized cells.
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Which carbohydrate is used to create the cell wall during cytokinesis in plant cells?
- cellulose - sucrose - lactose - glucose |
cellulose
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A gene that encodes a protein necessary for a cell to stop at checkpoints is an example of a(n)
- oncogene. - growth factor. - tumor-suppressor gene. - angiogenesis inhibitor. |
tumor-suppressor gene.
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