Biology 2.7 Kerboodle Answers
the sequence of bases in a nucleic acid is usually expressed in what direction?
5' to 3'
to which carbon of the sugar in a nucleic acid are the free hydroxyl groups attached?
what principle is necessary to preserve the sequence of DNA during replication?
Base pairing is complementary
A nucleotide consists of
a pentose sugar, attached to a phosphate group and a nitrogenous base
Which enzyme opens and untwist the DNA during replication
Which events take place in DNA replication
Unwinding of DNA double helix and formation of complementary strands by DNA polymerase
Transcription is initiated when RNA polymerase binds to
a site on the DNA at the start of a gene
A certain gene codes for a polypeptide that is 90 amino acids long. Approximately how many nucleotides long is the mRNA that codes for this polypeptide likely to be?
How many codons that specify amino acids are there in eukaryotes?
Which of the following is correct about rRNA?
Provides a site for polypeptide synthesis
Where do replication, transcription and translation occur in eukaryotic cells
Nucleus Nucleus Cytoplasm
Which of the following statements best describes the function of tRNA?
Transports amino acids to the ribosome
Which of the following is not directly associated with translation?
In nucleic acids, which type of bond links the 5-carbon sugars with an organic base?
Which of the following nitrogenous bases is found in DNA, but is not found in RNA?
Which of the following is not found in all nucleotide molecules?
The two strands of a DNA double helix are held together by
Which of the following proportions is true for DNA
In DNA, adenine always pairs with
In RNA, adenine always pairs with
DNA is made up of a phosphate group, an organic base, and
In the RNA molecule
Adenine pairs with uracil
Analysis of the DNA of an organism reveals that it is composed of 20% thymine. Based on this information what would you predict the % cytosine to be?
Two sides of DNA are held together by weak
replaces thymine in RNA
process of copying DNA
always pairs with cytosine
together with Watson discovered double helix of DNA
carries the message of DNA to ribosomes
always pairs with thymine
sections of DNA that code for a trait
strands of DNA are
composed of a sugar, a base, and a phosphate
the sugar found in DNA
the shape of RNA is what helix
technique for amplifying DNA in vitro
valises anticodon is CAU, what is DNA base triplet
name of sugar found in RNA but not DNA
process that decodes mRNA into proteins
base triplet in mRNA that specifies a particular amino acid
total number of different bases found in DNA and RNA together
section of DNA that forms a particular strand of mRNA
chain of many amino acids linked together
number of different amino acids coded by DNA in human protein
enzyme responsable for unwinding the double helix
organelle site within cell where protein synthesis occurs
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