Random bits from exams Flashcards
1
Q
How can you ensure cultures grow successfully after initial culture established?
A
After the initial culture is established
- ensure aseptic conditions are kept to prevent contamination
- maintain optimum pH
- provide them with repiratory substrates
2
Q
give a type of gene
A
Examples of different types of genes
-regulatory genes
3
Q
How do fish have lots of surface area for gaseous exchange?
A
Fish have lots of lamellae
4
Q
How do insects have a large surface area for gaseous exchange?
A
Insects have many branched trachea and tubes
5
Q
Why may an organism need a gas exhnage system?
A
- Small surface area to volume ration
- in short supply of oxygen
- rate of diffusion would be insuffienent
6
Q
3 types of adaptation?
A
Types of adaptation:
- anatomical (structural, appearance)
- Behavioural
- Physiological (correct functioning of cell processes)
