Gene regulation

Question 1

Restriction enzymes

Answer 1

Recognize specific dna sequence and cut everytime it finds it

Question 2

What happened to a gene that is not needed in a particular cell

Answer 2

It is repressed

Question 3

New antibiotic comes out what happens to bacterial cells

Answer 3

Those not resistant to it die

Question 4

A gene being used in transcriptions is most likely

Answer 4

Unwound from a histone without a repress or attached to promoter

Question 5

When T is absent

Answer 5

Repressor disconnects from the DNA, rna polymerase can transcribe the genes

Question 6

Transcription in eukaryotic cell

Answer 6

Uses dna to make mRNA in nucleus

Question 7

During transcription substitution mutation occurs which enzyme is most responsible

Answer 7

RNA polymerase

Question 8

Plasmids

Answer 8

Circular in bacteria cells

Question 9

Why can genes from one organisms produce same Protien in another species

Answer 9

Transcription and translation work similarly across both species

Question 10

Disrupted ribosome

Answer 10

Cell can’t make Protiens

Question 11

Gene regulations

Answer 11

Turns genes on and odd

Question 12

Transcription

Answer 12

Uses dna to make mRNA in nucleus

Question 13

Translation

Answer 13

Uses mRNA to make protiems

Question 14

Promoter

Answer 14

DNA at start of a gene where rna polymerase binds

Question 15

Transcription factors

Answer 15

Protiens that turn genes on or off

Question 16

Repressor

Answer 16

A transcription factor that blocks rna polymerase from transcribing dna

Question 17

Operon

Answer 17

Group of genes controlled by a promoter

Question 18

Lac operon

Answer 18

Bacteria makes lactase only when lactose is present

Question 19

Lac operon

Answer 19

Lactose binds to Repressor, changes shape of Repressor and falls off so rna polymerase can attach

Question 20

Trp operon

Answer 20

Bacteria make tryptophan(amino acid) unless they get it from their surroundings

Question 21

Trp operon

Answer 21

Tryptophan attaches to Repressor, changing shape so Repressor binds to dna, rna polymerase cannot attatch

Question 22

Histones

Answer 22

Protiens that dna wraps tightly around

Question 23

Genetic transformation

Answer 23

Foreign dna is out into a cell

Question 24

Plasmid

Answer 24

Small circular pieces of dna in bacteria, easy for scientists to apply Protiens it doesn’t naturally make

Question 25

Plasmid map

Answer 25

Shows all of the genes on a plasmid

Question 26

Restriction wnzymes

Answer 26

Cut the dna at specific sequences of nucleotides