Biology 105 chapter 9
3
How many different types of RNA molecules are needed to make protein?
Transcription
The synthesis of an RNA molecule from DNA template strand is called...
Messenger RNA
What is the form of RNA the carries the code from DNA to the site where the protein is assembled?
Messenger RNA
When a gene transcription occurs, what is produced?
Ribose
Which structure is found in RNA but not DNA?
RNA
The main component of ribosomes is....
2
DNA has how many strands?
4
If each nucleotide coded for a single amino acid, how many different types of amino acids could be combined to form proteins?
UACGCA
If the DNA triplets were ATG-CGT the mRNA codons would be...
AUGCGU
If the DNA triplets were ATG-CGT the tRNA anticodon would be....
A special sequence called a promoter is necessary for transcription to begin
In transcription
AUG
Normal start codon for protein synthesis is....
1
RNA has how many strands?
3
The genetic code is made up of units consisting of how many nucleotides?
Thymine
The nitrogenous base found in DNA but not in RNA is.....
Introns
The portion of the DNA molecule that is not translated and is a noncoding portion of DNA is composed of....
Exons
The portion of the DNA molecule that is translated is composed of.....
Complementary
The relationship between RNA and the DNA that serves as the template is.....
64
There are how many different mRNA codons?
20
There are how many different types of amino acids in proteins?
Is the synthesis of any type of RNA from a DNA template
Transcription
Carries an amino acid at one end
Transfer RNA differs from other types of RNA because it....
Adenine
Uracil will pair with.....
tRNA
What carries amino acids to ribosomes, where amino acids are linked into primary structure of a polypeptide?
