Rna 8.3
5.0(1)
Learn
Practice Test
Spaced Repetition
Match
FlashcardsCard Sorting
1/6
Earn XP
Description and Tags
Study Analytics
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
7 Terms
1
New cards
What does MRNA do?
The one that transfers the DNA code from the nucleus to the cytoplasm.
The mRNA is small enough to leave the nucleus through the nucleus pores and to enter the cytoplasm ,where the coded information that it contains is used to determine the sequence of amino acids in the proteins which are synthesized there
The mRNA is small enough to leave the nucleus through the nucleus pores and to enter the cytoplasm ,where the coded information that it contains is used to determine the sequence of amino acids in the proteins which are synthesized there
2
New cards
What is a genome ?
The complete set of genes in a cells including those in mitochondria and chloroplasts
3
New cards
What is a proteome ?
The full range of proteins produced by the genome
4
New cards
What is the nucleotide RNA made up of ?
The pentose sugar ribose
ACGU
A phosphate group
ACGU
A phosphate group
5
New cards
What are the 2 types of RNA that are important in protein synthesis ?
Messaged rna (mrna)
Transfer rna ( tRNA)
Transfer rna ( tRNA)
6
New cards
What is messenger rna?
Long strand of nucleotides.
The base sequence is determined by DNA strand during a process known as
transcription.
Once formed, mRNA leaves the nucleus via pores in the nuclear envelope and enters the cytoplasm ,where it associates with the ribosomes . There it acts as a template for protein synthesis .
Its structure is suited to its function because it possesses information
The base sequence is determined by DNA strand during a process known as
transcription.
Once formed, mRNA leaves the nucleus via pores in the nuclear envelope and enters the cytoplasm ,where it associates with the ribosomes . There it acts as a template for protein synthesis .
Its structure is suited to its function because it possesses information
7
New cards
What is tRNA
Transfer RNA is only found in the cytoplasm .
It is single stranded but folded to create a shape that looks like a cloverleaf . This cloverleaf shape is held in place by hydrogen bonds.
The function of tRNA is to attach to one of the 20 amino acids and transfer this amino acid to the ribosome to create the polypeptide chain.
Specific amino acids attach to specific tRNA molecules and this is determined by 3 bases found on the tRNA which are complementary to the 3 bases on mRNA.
These are called the anticodon because they are complementary to the codon on mRNA.
It is single stranded but folded to create a shape that looks like a cloverleaf . This cloverleaf shape is held in place by hydrogen bonds.
The function of tRNA is to attach to one of the 20 amino acids and transfer this amino acid to the ribosome to create the polypeptide chain.
Specific amino acids attach to specific tRNA molecules and this is determined by 3 bases found on the tRNA which are complementary to the 3 bases on mRNA.
These are called the anticodon because they are complementary to the codon on mRNA.