Final Flashcards
Which scientist confirmed that DNA is genetic material?
Hershey Chase
Which scientist indicated that DNA was found in the shape of’a double helix?
Franklin
What can be said about DNA replication?
Replication is said to be semi-conservative and semi-discontinuous
What is the function of the enzyme DNA polymerase during replication
Bonds nucleotides to new DNA strand
central dogma of biology?
DNA codes for RNA, which guides for protein synthesis
During replication, the double helix is unwound by the enzyme
Helicase
RNA differs from DNA in that it contains
Ribose and Uracil
What is NOT A nitrogenous bases in DNA_
Uracil
The ability of an Escherichia coli bacterium to control its gene transcription in response to environmental factors is called
Gene regulation
What is a frame shift mutation?
mutation happened within an amino acid sequence when a nitrogenous base was removed
What part of the cell is where the amino acids are made for transcription?
Ribosome
Smallest to largest parts
cell, nucleus, chromosome, DNA, nucleotide
When an insertion or deletion occurs, which is least likely to happen to an amino acid sequence?
The amino acid sequence is only changed at one specific point
Hox genes are responsible for____
Determining the general body pattern of most animals
A segment of DNA that codes for a protein is known as a____
Gene
Who was responsible for discovering that bases exist in equal amounts of their corresponding pair?
Chargaff
Portions of the DNA that are able to become mRNA molecules are called
Exons
DNA and RNA can be classified as which macromolecule?
Nucleic acids
What is an example of what is not an essential macromolecule for the Central Dogma___
Lipids
Scientists use the process of genetic engineering to
Insert the DNA of one organism into another
Which is the process that scientists use to produce a large number of recombinant DNA molecules?
Gene cloning
A mutation happened at a single place within a DNA sequence. There was no change within the amino
acid sequence. What type of mutation is this?
Silent
A major diference between RNA and DNA is that
RNA is single stranded instead of double stranded.
Why is DNA replication classified as semi-conservative and antiparallel?
The end result is two complete DNA strands. One half of each completed strand is the parent strand while the other half is the new-strand. Each has one half that runs 5’ to 3’ and 3’ to
