Topic 4 - RNA Structure [3]

Question 1

is mRNA single stranded or double stranded?

Answer 1

its single stranded, unlike DNA which is double stranded

Question 2

if DNA WAS able to leave the nucleus (It cant cuz its too fat) what would happen

Answer 2

it would just get eaten by the enzymes. hence destroying the genetic code.
broken down

Question 3

mRNA is short lived, how does this affect mRNA in carrying out its function?

Answer 3

it doesnt affect mRNA whatsoever.
It is only needed temporarily to help create a protein, by the time the enzymes could break it down it would have already carried out its function.

Question 4

mRNA is short stranded, how is this an advantage?

Answer 4

DNA Is too large to leave the nucleus.
mRNA is smaller since its only the length of 1 gene. so it can leave the nucleus.

Question 5

How does RNA differ to DNA?
(Structure)

Answer 5

RNA has Uracil instead of Thymine
RNA is single stranded with short pp chain. whereas DNA double stranded with long pp chain.

Question 6

State the 4 nitrogenous bases in RNA

Answer 6

Adenine
Guanine
Cytosine
Uracil

Question 7

What is mRNA?
Where is it made?
Function?

Answer 7

mRNA is a copy of a gene from DNA
It is formed in the Nucleus
It leaves the Nucleus to carry the code of 1 gene to a ribosome (which is in the cytoplasm)

Question 8

3 types of RNA

Answer 8

mRNA
tRNA
rRNA

Question 9

Function of RNA?

Answer 9

The function of RNA is to transfer the genetic code found in DNA out of the nucleus and carry it to the ribosomes in the cytoplasm.

to create proteins

Question 10

Difference between DNA and RNA monomers

Answer 10

DNA thymine whereas RNA uracil
dna PENTOSE Deoxy Ribose whereas RNA PENTOSE Ribose

Question 11

Difference between DNA and RNA Polymers

Answer 11

DNA longer, cuz it contains the entire fucking genome
RNA shorter cuz only length of 1 gene.

DNA double stranded
RNA single stranded

Question 12

whats a functional RNA

Answer 12

non-coding RNA

Question 13

rRNA is Ribosomal RNA

Answer 13

rRNA makes up the bulk of ribosomes, thats all you need to know lol
its a functional RNA just like tRNA

Question 14

Function of tRNA?

Answer 14

function is to attach to 1 of the 20 different amino acids and transfer the amino acid to the ribosome to create the polypeptide chain.

They have an anticodon which is complementary to a codon on mRNA
this is the amino acid binding site

Question 15

Describe tRNA structure

Answer 15

Single stranded again but folded to create a cloverleaf shape. held in place by hydrogen bonds.

Question 16

Describe RNA Structure

Answer 16

Polymer of a nucleotide
formed of a ribose, a nitrogenous base and a phosphate group.