Past Qs Flashcards
What is the pH of blood?
7.35-7.45
What is not needed in the synthesis of GMP?
Asparigine (Asn)
What are known as Proenzymes or Pre-curses?
Zymogen
Where are hydrophilic bonds located?
On the outside of the protein
What enzyme are needed to convert Uric Acid to Allantoine?
Uricase
Enzymes speed up the reaction rate by doing what?
Thea loser the activation energy
What can break the primært structure?
Trypsin. Etanol and heat break the 2nd and 3rd structure
What is the isoelectric point of a molecule?
The point where no electric charge exists on a molecule group
What is false for enzymes?
Most proteins are fibrous proteins
How do lipid soluble substances cross the membrane?
By dissolving in the lipid bi-layer
How is the fluidity of a membrane decreased?
Due to the decrease in the number of double-bonds
What are ligases?
An enzyme which forms new bonds: eg. DNA ligase
Answer in the exam was NOTB
What type of transport uses its energy source from the ion-gradient?
2nd active transport
In relation to passive transport, what types of structures are needed?
No structures are needed as passive transport continuous itself unaided.
How does Allosteric inhibitor affect the substrate?
Affect the active site
What happens to a substrate when it is placed in a Hypertonic solution?
It shrinks and dies
What happens to a substrate when it is placed in a Hypotonic solution?
Water enters the cell, it swells and bursts
What bond is found in a nucleotide?
O-glycosidic
Which molecule is necessary for synthesis of AMP.?
Glutamine
Which molecule is transported mainly by passive transport?
Oxygen
What is the end product of purine degradation in birds?
Urin Acid. In mammas it is Allontoine
Which cation has the highest concentration intra-cellular?
Potassium (k+)
Secondary structures such as alpha helices and beat plated sheets are stabilized mainly by:
Hydrogen bonds
Which amino acids is the result of transamination of pyruvate?
Alanine
What is the classification of aspartic acid?
It is a mono-amino di-carboxylic acid
Which molecule has ATPase activity in muscle fibres?
Myosin
Which amino acid produser GABA?
Glutamate (glutamine)
