Past Qs

Question 1

What is the pH of blood?

Answer 1

7.35-7.45

Question 2

What is not needed in the synthesis of GMP?

Answer 2

Asparigine (Asn)

Question 3

What are known as Proenzymes or Pre-curses?

Answer 3

Zymogen

Question 4

Where are hydrophilic bonds located?

Answer 4

On the outside of the protein

Question 5

What enzyme are needed to convert Uric Acid to Allantoine?

Answer 5

Uricase

Question 6

Enzymes speed up the reaction rate by doing what?

Answer 6

Thea loser the activation energy

Question 7

What can break the primært structure?

Answer 7

Trypsin. Etanol and heat break the 2nd and 3rd structure

Question 8

What is the isoelectric point of a molecule?

Answer 8

The point where no electric charge exists on a molecule group

Question 9

What is false for enzymes?

Answer 9

Most proteins are fibrous proteins

Question 10

How do lipid soluble substances cross the membrane?

Answer 10

By dissolving in the lipid bi-layer

Question 11

How is the fluidity of a membrane decreased?

Answer 11

Due to the decrease in the number of double-bonds

Question 12

What are ligases?

Answer 12

An enzyme which forms new bonds: eg. DNA ligase

Answer in the exam was NOTB

Question 13

What type of transport uses its energy source from the ion-gradient?

Answer 13

2nd active transport

Question 14

In relation to passive transport, what types of structures are needed?

Answer 14

No structures are needed as passive transport continuous itself unaided.

Question 15

How does Allosteric inhibitor affect the substrate?

Answer 15

Affect the active site

Question 16

What happens to a substrate when it is placed in a Hypertonic solution?

Answer 16

It shrinks and dies

Question 17

What happens to a substrate when it is placed in a Hypotonic solution?

Answer 17

Water enters the cell, it swells and bursts

Question 18

What bond is found in a nucleotide?

Answer 18

O-glycosidic

Question 19

Which molecule is necessary for synthesis of AMP.?

Answer 19

Glutamine

Question 20

Which molecule is transported mainly by passive transport?

Answer 20

Oxygen

Question 21

What is the end product of purine degradation in birds?

Answer 21

Urin Acid. In mammas it is Allontoine

Question 22

Which cation has the highest concentration intra-cellular?

Answer 22

Potassium (k+)

Question 23

Secondary structures such as alpha helices and beat plated sheets are stabilized mainly by:

Answer 23

Hydrogen bonds

Question 24

Which amino acids is the result of transamination of pyruvate?

Answer 24

Alanine

Question 25

What is the classification of aspartic acid?

Answer 25

It is a mono-amino di-carboxylic acid

Question 26

Which molecule has ATPase activity in muscle fibres?

Answer 26

Myosin

Question 27

Which amino acid produser GABA?

Answer 27

Glutamate (glutamine)