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WorksheetsGenetics Ch20 Cancer Ch21 DNA
Total questions: 15
Worksheet time: 11mins
Cancer can result from a failure of (a)
A mutation that occurs in cells that do not develop into gametes is called a (a) mutation.
Which of the following characteristics are typical of cancer cells? (Select all that apply.)
More adherent than normal cells
Loss of cell cycle control
Dedifferentiated
Lack contact inhibition
Decreased mutation rate
Which of the following events at the cellular level can result in development of cancer? (Select all that apply.)
Activation of cancer stem cells
Increase in the proportion of stem cells within a tissue
Defective tissue repair
Induction of stem cell specialization
Dedifferentiation
Which statements about the genetic changes that occur during tumor progression is true? (Select all that apply.)
Changes in chromosome number, deletions, and duplications can cause cancer, but the point mutation cannot cause cancer.
The older a tumor is, the more genetic changes it will have.
Most cancers are the result of a single genetic change.
A mutation present in all stages of a tumor acts early in the disease process.
Genes that normally stimulate cell division when it is appropriate are called (a) .
Which description pertains to oncogenes?
Inactivation causes cancer.
Activation causes cancer.
Cancer entails a loss of function.
Often inactivated by a point mutation or deletion.
All cancers reflect, at the most general level, a defect in
DAN replication.
the formation of mitochondria.
cell membrane structure.
the cell cycle.
Genetic modification
alters genetic codes so that one species' code is like another's.
add sugars and phosphates in a nucleus.
substitutes entire nuclei to genetically engineer a cell.
alters, deletes, or adds DNA to a cell.
A molecule consists of a piece of DNA from one organism combined with the DNA from a member of another species is called
recombinant DNA.
restricted DNA.
homogenic DNA.
bioengineered DNA.
An organism that carries DNA from other species is termed
transverted.
translocated.
transgenic.
transformed.
Proteins isolated from bacteria and used in recombinant DNA technology to cut DNA at specific sequences are
plasmids.
bacteriophage enzymes.
methylating enzymes.
restriction enzymes.
Structures used in recombinant DNA technology to carry the DNA from the cells of one species to the cells of another species are
restriction enzymes.
cloning vectors.
sticky ends.
donor DNA.
The process that uses short, synthetic, double stranded RNAs to intentionally bind mRNAs thereby diminishing gene expression is called _______,
CRISPR tecnology
recombination
antisense technology
bioremediation
_______ is a gene silencing technique that is based on the fact that RNA molecules can fold into short, double-stranded regions where the base sequence is complementary.
RNA interference.
RNA amplication.
RNA replication.
RNA repair.
