B1-B3 Flashcards
1
Q
Define all the characteristics of living organisms.
A
- Movement;
- Reproduction;
- Sensitivity - response to a stimulus;
- Growth;
- Respiration;
- Excretion;
- Nutrition.
2
Q
Formula for magnification.
A
size of drawing/actual size.
3
Q
Tooth components in order.
A
- enamel
- dentine
- gum
- pulp cavity
- bone
- nerves
- blood capillaries.
4
Q
Define diffusion
A
Movement from higher concentration to lower concentration.
5
Q
Define osmosis.
A
From high concentration of water molecules (low conc. solute) to a lower concentration of water molecules.
6
Q
Volume to S.A relation.
A
As the volume of an object increases, its
surface area relative to its volume decreases.
7
Q
Two osmosive states of animal cells.
A
- bursts
- shrivels.
8
Q
Two osmosive states of plant cells.
A
- turgid
- plasmolyzed.
9
Q
Test for starch (food).
A
Iodine. If yes, turnes black.
10
Q
Test for sugar.
A
Benedicts. Orange/red.
11
Q
Test for protein.
A
Biuret solution. Purple.
12
Q
Test for fat.
A
1cm cubed water and same ethanol. Cloudy.
