Chapter 15 Test Flashcards
(24 cards)
What base in found in DNA but not RNA ?
Thymine
Which anticodon will be associated with proline?
GGG
Which statement correctly describes the process of protein synthesis in a eukaryotic cell?
The process of translation occurring in the cytoplasm.
Which type of mutation happens when one nitrogen base is substituted for a different nitrogen base?
Point
Which direction must DNA be assembled by the polymerase during DNA replication?
5’ - 3’
What results when a mutation causes a codon to code for the same amino acid?
Silent
Which of the following contains a phosphate, sugar and nitrogenous base?
a nucleotide
Which form of genetic technology can be compared to finding a DNA fingerprint?
gel electrophoresis
What are the two main steps to protein synthesis?
translation and transcription
Which NITROGENOUS base pairs are found together using Chargaff’s rule?
C=G
Which cellular structure aids with protein synthesis?
Ribosomes
The anti-codon will be part of which type of nucleic acid?
tRNA
Which enzyme is responsible for unwinding the DNA double helix during the replication process?
helicase
Which codon will be associated with Serine?
UCC
Which enzyme is responsible for joining together the Okazaki fragments?
ligase
Which form of genetic technology is used to cut DNA molecules at specific nucleotide sequences?
restriction enzymes
Which scientists contributed to our knowledge of DNA by radioactive labelling techniques?
Hershey and Chase
During protein synthesis in a eukaryotic cell, which is true?
transcription takes place in the nucleus
Which of the following is not a chromosome mutation?
base deletion
What are the differences between DNA and RNA?
1) Sugar is a ribose, while
DNA has a
deoxyribose
2) RNA has uracil instead
of thymine as in DNA
3) RNA is only a single
strand
What is Chargaff’s rule?
Found that the nucleotides are not present in equal amounts. Instead, the nucleotides are present in varying, but characteristic, proportions.
Chargaff’s rule- in a DNA sample, the amount of adenine is about the same as thymine and the amount of cytosine is about the same as guanine
mis-sense mutation
mutation that results in an
altered but functional
protein
- Mis-sense mutations can
be harmful. - A change in a single amino acid in one of the
polypeptides that makes up hemoglobin is responsible for the genetic blood disorder :
sickle cell disease (* Sickle cell is hereditary and can be passed down from one gen to the next)
