Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Genetics > Mechanism Of Protein Synthesis > Flashcards

Mechanism Of Protein Synthesis Flashcards

1
Q

Describe the structure of tRNA

A

80 nucleotides long
Single stranded but base pairs form within the chain
Clover leaf
Anticodon at one end

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is each tRNA specific for?

A

An amino acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What determines the tRNA amino acid carried?

A

Its anticodon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are tRNAs?

A

Adaptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How is an amino acid attached to tRNA

A

ATP hydrolysed and amino acid joined to AMP

Correct tRNA bonds and amino acid transferee from AMP to tRNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How many AA codons are there?

A

61 +3stop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many tRNAs are there!

A

40-45

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What the ribosome made of?

A

RNA and protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What’s the role of ribosome in protein synthesis?

A

Bind mRBA and amino actyl-tRNA

Catalysed stepwise formation of peptide bonds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the 3 stages of protein synthesis?

A

Initiation
Elongation
Termination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is peptide bond formation catalysed by?

A

Peptidyl transferase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the role of mRNA?

A

Take genetic info from DNA to a ribosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the role of rRNA?

A

building block for ribosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the stop codon?

A

UGA UAA UAG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the start codon?

A

AUG (methionine)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What happens in the initiation process?

A

Small subunits binds mRNA and initiator amino actyl.tRNA then large subunits binds

17
Q

What happens in the elongation process?

A

Peptide bonds are formed as the ribosome moves along the mRNA

18
Q

What happens in the termination process?

A

A stop codon enters A site and protein is released

19
Q

How does prokaryotic and eukaryotic cells differ in protein synthesis?

A

E:
Nuclear membrane
MRNA transported to the cytoplasm
Protein trafficked to correct site

P:
No nuclear membrane
Proteins diffuse through cytoplasm
Coupled transcription and translation

Genetics (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions