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Flashcards in Past Qs Deck (27)
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1

What is the pH of blood?

7.35-7.45

2

What is not needed in the synthesis of GMP?

Asparigine (Asn)

3

What are known as Proenzymes or Pre-curses?

Zymogen

4

Where are hydrophilic bonds located?

On the outside of the protein

5

What enzyme are needed to convert Uric Acid to Allantoine?

Uricase

6

Enzymes speed up the reaction rate by doing what?

Thea loser the activation energy

7

What can break the primært structure?

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

8

What is the isoelectric point of a molecule?

The point where no electric charge exists on a molecule group

9

What is false for enzymes?

Most proteins are fibrous proteins

10

How do lipid soluble substances cross the membrane?

By dissolving in the lipid bi-layer

11

How is the fluidity of a membrane decreased?

Due to the decrease in the number of double-bonds

12

What are ligases?

An enzyme which forms new bonds: eg. DNA ligase
Answer in the exam was NOTB

13

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

2nd active transport

14

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

No structures are needed as passive transport continuous itself unaided.

15

How does Allosteric inhibitor affect the substrate?

Affect the active site

16

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

It shrinks and dies

17

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

Water enters the cell, it swells and bursts

18

What bond is found in a nucleotide?

O-glycosidic

19

Which molecule is necessary for synthesis of AMP.?

Glutamine

20

Which molecule is transported mainly by passive transport?

Oxygen

21

What is the end product of purine degradation in birds?

Urin Acid. In mammas it is Allontoine

22

Which cation has the highest concentration intra-cellular?

Potassium (k+)

23

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

Hydrogen bonds

24

Which amino acids is the result of transamination of pyruvate?

Alanine

25

What is the classification of aspartic acid?

It is a mono-amino di-carboxylic acid

26

Which molecule has ATPase activity in muscle fibres?

Myosin

27

Which amino acid produser GABA?

Glutamate (glutamine)