DNA In Eukaryotes And Prokaryotes And Polypeptide Synthesis

Question 1

What is DNA like in Eukaryotes?

Answer 1

• linear chromosomes
• wrapped around proteins
• dna is contained within nucleus

Question 2

What is dna like in prokaryotes?

Answer 2

• dna is circular
• not wrapped around his tone proteins
• dna is contained within a nucleoid

Question 3

What are the two stages of polypeptide synthesis

Answer 3

Transcription
Translation

Question 4

Transcription

Answer 4

1. DNA in the nucleus is used to make an mRNA strand
2. RNA polymerase unzips DNA and pairs RNA bases to create mRNA
3. mRNA leaves the nucleus for the ribosome

Question 5

Translation

Answer 5

• mRNA attaches to ribosome in the cytoplasm
• tRNA brings amino acids to the ribosome
• Each tRNA anticodon pairs with an mRNA codon

Question 6

Polypeptide formation

Answer 6

• amino acids link in the correct order to form a polypeptide chain
• the chain detaches as a functional protein once complete

Question 7

Purpose of polypeptide synthesis

Answer 7

To create proteins essential for cell structure, function and regulation