DNA, genes and chromsomes

Question 1

what are proteins createdd on

Answer 1

ribosomes

Question 2

what processes form proteins

Answer 2

transcription
translocation

Question 3

why is a copy of the gene crreatedd by mRNA

Answer 3

so it can be crarried ffrom the nucleus–> cytoplasm

Question 4

what does DNA helicase do to the gene in transcription

Answer 4

breaaks the hydrogen bonds between the basee pairs

Question 5

what is attracted to the exposed complimentary bases on DNA

Answer 5

freee RNA nucelotides

Question 6

what is the relationship between the free RNA nucleotidees and and the bases

Answer 6

it is attracted to it by complimentary base pairing

Question 7

what catalysese the reaction between the RNA nucleotides

Answer 7

RNA polymerase

Question 8

what is the role of then enzyme RNA polymerase

Answer 8

catalyses the adjacent RNA nucleotides together

Question 9

what does pre mRNA consist of

Answer 9

introns
extrons

Question 10

why do we not need the introns?

Answer 10

they dont code for amino acids

Question 11

how do we remove the introns

Answer 11

splicing

Question 12

what is splicing

Answer 12

the removal of introns in pre-mRNA

Question 13

during the first stage of translocation what does the mRNA bind onto

Answer 13

ribosome

Question 14

what is the anticodon on tRNA

Answer 14

has 3 bases that can bind onto mRNA

Question 15

what does the tRNA do to the start codon

Answer 15

complimentary anticodon binds onto it.

Question 16

explain the strucue of tRNA

Answer 16

has an anticodon
and an attachment of an amino acid

Question 17

what happens when the ribosome moves along the mRNA

Answer 17

anotherr tRNA binds onto the codons va its anticodons

Question 18

what bond occurs between 2 tRNAs and their amino acids

Answer 18

peptide bond