unit 7 biology test study
What is the amino acid sequence for the following strand of mRNA? 'AUAACAGACGGC'? Use the abbreviations on the amino acid chart. Capitalize the first letter in each abbreviation and place a dash in between each abbreviation. E.G. Phe-Ser-Tyr-Cys * 2/2
Ile-Thr-Asp-Gly
What is the amino acid sequence for the following gene? 'TACAAGGCTACT' - Use the abbreviations on the amino acid chart. Capitalize the first letter in each abbreviation as seen on the chart and place a dash in between each abbreviation. Note - stop is all lower case. E.G. Phe-Ser-Tyr-Cys-stop
Met-Phe-Arg-Stop
Which of the following statements is true regarding mutations in body cells and germ cells?
Mutations in germ cells may be passed off to offspring of the organism and mutations in body cells may not.
The enzyme that assembles mRNA
RNA polymerase
Assume that the portion of DNA below is a gene for the development/formation of fingers on the hand. What type of mutation is taking place and will it affect the structure of the protein. Original DNA: TACAAGCTAACT Mutated DNA: TACAAGCTGACT
This is a point mutation and it will not affect the organism.
Each of the following is a type of RNA except for ________________
carrier RNA
Each nucleotide triplet in mRNA that specifies a particular amino acid is called a _________.
codon
Identify the type of mutation that has occurred in the DNA strand below. Original DNA: TACAAGCTAACT Mutated DNA: TACAAGCCTAACT
frameshift mutation from insertion
the bond that takes place between paired bases is a __________________
hydrogen bond
Carries the DNA message from the nucleus to the site of protein synthesis.
mRNA
Molecule that composes the ribosome.
mRNA
Which of the following types of RNA carries instructions for making proteins?
mRNA
What type of mutation has taken place in the karyotype below?
nondisjunction trisomy
DNA, RNA, and ATP are polymers that are ______________________
nucleic acids
The monomer of nucleic acids
nucleotide
The structure labeled "X" in the figure below represents a_________________.
nucleotide
the entire molecule shown in the diagram below is called a/an
nucleotide
Molecules of DNA are composed of long chains of __________________.
nucleotides
The bond that takes place between amino acids in the formation of proteins is a __________
peptide bond
A mutation in which one nucleotide is substituted for another is a ____________________.
point mutation
identify the type of mutation that has occured in the DNA strand below: Original DNA- TACAAGCTAACT mutated DNA- TACAAGCTTACT
point mutation
Which of the following is not part of a DNA molecule?
ribose
Site of Protein synthesis
ribosome
Molecule that transfers amino acids to the ribosome.
tRNA
Process in which the DNA code is converted to mRNA.
transcription
Process in which the mRNA code is converted into a protein (polypeptide)
translation
the type of mutation depicted in the image below in which chromosome 17 has crossed over with chromosome one is
translocation
In RNA molecules, adenine is complementary to
uracil
The molecule in figure 1 is composed of ______ strands.
2
the enzyme responsible for adding nucleotides to the exposed dna template bases to form new dna strands are
DNA polymerase
The entire figure below shows the structure a(an
DNa molecule
________ and ________ make up the backbone of a DNA strand.
Deoxyribose, phosphate
During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus, if a portion of the original strand is CCTAGCT, then the new strand will be
GGATCGA
______________________discovered a "transforming principle" which contained genetic information that changed harmless R bacteria into lethal S bacteria. This "transforming principle" was later defined as DNA.
Griffith
Match the letter on the diagram with the correct description.
A (monomer)= nucleotide B=nucleus C=amino acid D=mRNA E=tRNA F=anticodon G=ribosome H=mRNA I=codon
Give the codon for Methionine
AUG
which of the following is not found in DNA?
Uracil
the scientists credited with designing the model that establishes the structure of DNA are
Watson and Crick
he base-pairing rules state that the following are base pairs in DNA:
adenine—thymine; guanine—cytosine.
RNA differs from DNA in that RNA ______________________.
all of the above
the monomer of proteins
amino acids
