problem: The nitrogenous base found in DNA but not in RNA is:
A) Adenine.
B) Cytosine.
C) Guanine.
D) Thymine.
E) Uracil.
problem: Which of the following is used to cut DNA molecules chemically at specific sequences?
A) Restriction enzymes
B) Cloning molecules
C) Luciferase
D) Gel electrophoresis
problem: DNA polymerases are used in the laboratory to:
A) Perform gel electrophoresis.
B) Cure patients of certain genetic diseases.
c) Make many copies of a DNA sequence.
D) Attach DNA fragments to each other.
problem: The polymerase chain reaction (PCR) is used to:
A) Produce many copies of a selected DNA sequence.
B) Insert DNA from one organism into a new host.
C) Screen for a particular gene.
D) Deliver DNA products into a human patient.
problem: The use of DNA analysis to identify individuals is known as:
A) PCR testing
B) DNA fingerprinting
C) Cloning.
D) None of these.
problem: DNA identification of individuals is possible because:
A) Individuals, other than identical twins, are genetically unique.
B) A different restriction enzyme is needed to cut each person’s DNA.
C) A different species of bacteria is needed for the DNA library of each person
D) Each person’s DNA uses a different set of bases.
problem: Which of the following sources would NOT be suitable for DNA fingerprinting analysis?
A) Saliva.
B) Hair.
C. Semen.
D. Red blood cells.
E. Urine.
problem: Small circular DNA molecules accompanying the main DNA of the bacterial chromosome in a bacterial cell are called:
A) Jumping genes.
B) Ligases.
C) Polymerases.
D) Plasmids.
problem: Procedures that manipulate the genes of organisms are referred to as:
A) DNA fingerprinting.
B) Genetic engineering.
C) Bacteriophages.
D) New genetics.
problem: Your child is taking an antibiotic that blocks ribosomes in the pathogenic (disease-causing) bacteria from binding with mRNA. Which of the following processes will not occur in the pathogenic bacteria?
A) Transcription.
B) Photosynthesis.
C) Translation .
D) Osmosis.