2D: Gene Expression

Question 1

Compare the similarities and differences between DNA and RNA

size, location stucture function bases molecular structure, function, bases

Answer 1

DNA
* size:bigger - double helix
* location- nucleus
* stucture- double helix with bases: a,t,g,c
* fuction- genetic info proteins
* bases- a,t,g,c
RNA
* size: sigle strand
* location- nuclus and cytoplasm (mRNA,tRNA)
* Fuction- cods for proteins, transcrption and translation
* Bases- a,u,g,c

Question 2

the stages of gene expresion involved in the prodution of protiens

Answer 2

• transcription: involves the copying of DNA inti pre-mRNA
• RNA processing: modifies the pre-mRNA molcule to produce mRNA
• Translation:invovles the decoding of the mRNA strand into a polypeptide chain

Question 3

Types of genes

Answer 3

• Constitutive Genes:are always switched on and are transcribed continually
• regulatory genes:
• Structural genes:

Question 4

What is Transcription

Answer 4

• The creation of a pre-mRNA

the process of transcription are three stages
- initiation
- Elongation
- Termination

Question 5

what does Gene Expression mean

Question 6

what does Gene Regulation mean

Answer 6

transcription
RAN processing
Translation

Question 7

identify and describe the function of mRNA and tRNA

Question 8

identify organelles and molescules involved in protein synthesis

Question 9

describe the process synthesis in relation to transcription gene expression and translation

Question 10

identify and describe promoter regions,exons and introns whithin a gene sequence specific to gene expression

Question 11

build connections between protein synthesis, amino acids,enzymes and function in the cell

Question 12

distinguish between structural and regulatory genes and identify related regions in gene sequences