What topics are in Nat 5 biology?
1 Cell structure.
How long is a nat 5 biology exam?
2 hours and 30 minutes
The National 5 Biology exam has one externally assessed question paper worth 100 marks. Candidates have 2 hours and 30 minutes to complete the question paper.
How are proteins made national 5 biology?
Different proteins are made of different combinations of amino acids . The sequence of amino acids in the chain determines how the chain will fold up to make the protein, so different proteins have different three-dimensional shapes. The three-dimensional shape of a protein determines its function.
What is an enzyme Nat 5?
Enzymes are natural catalysts that act on specific substrates at optimum conditions.
Which part is removed by deamination?
In situations of excess protein intake, deamination is used to break down amino acids for energy. The amino group is removed from the amino acid and converted to ammonia. The rest of the amino acid is made up of mostly carbon and hydrogen, and is recycled or oxidized for energy.
What do enzymes build up?
Enzymes are the catalysts involved in biological chemical reactions. They are the “gnomes” inside each one of us that take molecules like nucleotides and align them together to create DNA, or amino acids to make proteins, to name two of thousands of such functions.
Why oxidative deamination is important?
Oxidative deamination is an important step in the catabolism of amino acids, generating a more metabolizable form of the amino acid, and also generating ammonia as a toxic byproduct. The ammonia generated in this process can then be neutralized into urea via the urea cycle.
Does deamination take place in liver?
In the human body, deamination takes place primarily in the liver, however it can also occur in the kidney. In situations of excess protein intake, deamination is used to break down amino acids for energy. The amino group is removed from the amino acid and converted to ammonia.