DNA + Enzymes Flashcards
Where is DNA found
In the nucleus
How many chromosomes do humans have in their nucleus
46
Is DNA a polymer
Yes
Why is DNA a polymer
It is made up of small nucleotides.
What are codons
The way the bases are read ( in groups of three).
Why is mRNA created
mRNA is a copy of DNA because the DNA is not able to leave the nucleus ( too big)
How does mRNA leave the nucleus
Through the pores in the membrane
What will the mRNA show if the DNA IS AACGTA
mRNA will show UUGCAU
What are enzymes
Biological catalysts
True or false: Enzymes get used up
False
What ideology helps to understand enzymes and substrates
Lock and key hypothesis
What do enzymes do
They either make bonds between molecules or break them
What three factors affect the rate of enzyme reactions
Temperature, pH and concentration
What happens if the temperature is too much for the enzymes
They start to denature and the chain starts to unravel - cannot be used anymore
How do bases pair up
From hydrogen bonding
