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Biology DNA test
Terms in this set (23)
DNA Replication is said to be semiconservative because
A new double helix contains one old and one new strand of DNA
Which of the following enzymes are used to join bits of DNA together?
A.LigaseB. DNA polymeraseC. PrimaseD. DNA helicase
Which of the following enzymes is used to unwind and unzip the DNA molecule?
A.Ligase B. DNA polymerase C. Primase D. DNA helicase
Where does the process of DNA replication happen in a cell?
During replication, which sequence of nucleotides would bond with the DNA sequence TATGA?
The process by which the genetic code of DNA is copied into a strand of mRNA is called
The process of making proteins on the ribosome based on instructions from mRNA is called
In messenger RNA (mRNA), each codon specifies a particular..
Which of the following statements about the genetic code is TRUE?
A. A codon can specify more than one amino acid
B.Every codon specifies a different amino acid
C.Some codons specify the same amino acid
D.Some codons have no function at all
C .Some codons specify the same amino acid
How would the DNA sequence GCTATA be transcribed to mRNA?
Circle the letter of each sentence that is TRUEabout translation
A.Before translation occurs, mRNA is transcribed from DNA in the nucleus
B.Translation occurs in the nucleus
C.tRNA's job is to bring the proper amino acid into the ribosome to be attached to the growing peptide chain
D.When the ribosome reaches a stop codon, it releases the newly formed polypeptide and the mRNA molecule
Answer are A, C and D
A substance that can cause a change in the DNA code of an organism is called a...
What is DNA replication? Why is it important/necessary?
DNA replication is the process where DNA makes more or itself prior to cell division. this is important so that all new cells have the same DNA
structural differences of DNA from RNA
structural differences of RNA from DNA
How do the bases pair up in RNA compared to DNA?
RNA is A-U and C-G
DNA is A-T and C-G
How does the role of tRNA differ from that of mRNA?
mRNA carries instructions to build proteins to the ribosomes from the nucleus while tRNA brings the appropriate amino acids to the ribosomes.
Transcription happens in the (blank) of a cell, while translation occurs in the (blank) of a cell
Nucleus and ribosome
Arrange the steps of protein synthesis in order from START to FINISHA
_copy of DNA is made (mRNA) through the process of transcription
_Strand of mRNA travels to the ribosome.
_Ribosome performs translation to decode mRNA codons
_tRNA brings appropriate amino acids to the ribosome
_Ribsome bonds amino acids together to create a protein
If a short protein has 100 amino acids in it...
how many codons are in the mRNA stand
How many nucleotides are in the mRNA stand
How is protein synthesis different from DNA replication?
DNA replication only ends up with new stands of DNA, While in proteins synthesis, DNA is copied into mRNA which is read by ribosomes to make proteins
Amino acids- onethionine - glutamine - cysterne
look at review last question
once memorized your chillin
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