AP Biology The Molecular Basis of Inheritance Review
If guanine makes up 28% of the nucleotides in a sample of DNA from an organism, then thymine would make up ___% of the nucleotides. - 28 - 56 - 22 - 44
22 (If guanine makes up 28%, then there must be an equal amount of cytosine (28%). for a total of 56%. That leaves 44% for adenine and thymine. Divide that by 2 to get the percentage of thymine in the DNA.)
If a segment of DNA is 5'-TGA AGA CCG-3', the RNA that results from the transcription of this segment will be - 5'-TGA AGA CCG-3' - 3'-ACU UCU GGC-5' - 3' ACT TCT GGC- 5' - 3' CGG UCU UCA-5'
3'-ACU UCU GGC-5'
Which of TRUE of biotechnology techniques? - EcoRI is a name for a DNA probe. - A DNA probe consists of a radioactive single strand of DNA.
A DNA probe consists of a radioactive single strand of DNA
A particular triplet code on DNA is AAA. What is the anticodon for it? - AAA - TTT - UUU - CCC
AAA
Which enzyme permanently seals together DNA fragments that have complementary sticky ends? - DNA polymerase - single stranded binding protein - reverse transcriptase - DNA ligase
DNA ligase
Discovered transformation in bacteria - Hershey and Chase - Griffith - Meselson and Stahl - Rosalind Franklin
Griffith
Which of the following acts as a primer that initiates the synthesis of a new strand of DNA? - single strand binding protein - RNA - DNA - topoisomerases
RNA
The first to analyze DNA by X-ray crystallography - Hershey and Chase - Griffith - Meselson and Stahl - Rosalind Franklin
Rosalind Franklin
Which of the following contain a pyrimidine and a purine? - adenine and guanine - uracil and thymine - cytosine and uracil - adenine and cytosine
adenine and cytosine
In DNA replication, the role of DNA polymerase is to - bring two separate strands back together after new ones are formed - build a new strand of DNA from 5' to 3'
build a new strand of DNA from 5' to 3'
What are the regions of DNA called that code for prions? - introns - codons - anticodons - exons
exons
Which of the following is an example of wobble? - the binding of a primer to DNA - four codons can all code for the same amino acid
four codons can all code for the same amino acid
Prions are - bacteriophages that cause disease - infectious proteins - a bacterium that infects viruses - the cause of sickle cell anemia
infectious proteins
All of the following are true about electrophoresis EXCEPT - it can be used only to analyze DNA - the heavier the fragment, the slower it moves
it can be used only to analyze DNA
Acts as an inducer in the lac operon - lactose - repressor - regulator - promoter
lactose
Mad cow disease is cause by a - virus - prion - bacterium - genetic mutation
prion
Binding site for RNA polymerase - lactose - repressor - regulator - promoter
promoter
Which word would BEST describe the operon? - respiration - transport - regulation - nutrition
regulation
Codes for the repressor - lactose - repressor - regulator - promoter
regulator
Once transcribed, eukaryotic RNA normally undergoes substantial alteration that results primarily from - removal of exons - removal of introns - addition of introns - combining of RNA strands by a ligase
removal of introns
The process in which DNA is synthesized from a template strand - translation - replication - transcription - transformation
replication
Binds at the operator - lactose - repressor - regulator - promoter
repressor
Which is NOT used in the normal replication of DNA? - RNA replication - ligase - restriction enzymes - polymerase
restriction enzymes
DNA replication can best be described as - semiconservative - conservative - degenerate - comparative
semiconservative
Gel electrophoresis is used to - amplify small pieces of DNA - make bacterial cells competent - separate DNA that has already been cut up by restriction enzymes - cause DNA to twist back into a helix after amplification
separate DNA that has already been cut up by restriction enzymes
The process through which DNA makes messenger RNA - translation - replication - transcription - transformation
transcription
The process in which foreign DNA is taken up by a bacterial cell - translation - replication - transcription - transformation
transformation
The process in which a polypeptide strand is synthesized using mRNA as a template - translation - replication - transcription - transformation
translation
EcoRI is - a bacterium - a bacteriophage - a type of DNA used extensively in research - a restriction enzyme
a restriction enzyme
Proved that the nuclear material in a bacteriophage, not the protein coat, infects a bacterium - Hershey and Chase - Griffith - Meselson and Stahl - Rosalind Franklin
Hershey and Chase
Which of the following is TRUE about sickle-cell anemia? - It is caused by a chromosome mutation that resulted from nondisjuction. - It is caused by a point mutation.
It is caused by a point mutation.
Proved that DNA replicates by semiconservative replication - Hershey and Chase - Griffith - Meselson and Stahl - Rosalind Franklin
Meselson and Stahl
What happens when T7 bacteriophages are grown in radioactive phosphorous? - They can no longer infect bacteria. - They die. - Their DNA becomes radioactive. - Their protein coat becomes radioactive.
Their DNA becomes radioactive.
If AUU is the codon, what is the anticodon? - AUU - TAA - UUA - UAA
UAA