Lab Practical

Question 1

Be able to express numbers in the formation of scientific notation

43. 125
44. 0056

Answer 1

4. 31x10^1

5. 6x10^-3

Question 2

Be able to convert between metric units

3.65 grams to milligrams

3650 microliters to liters

Answer 2

3650 mg

3.65 L

Question 3

Know the monomers that construct proteins carbohydrates and nucleic acids

Answer 3

Proteins: amino acids

Carbohydrates : monosaccharides: glucose, galactose and fructose

Nucleic acid: nucleotides

Question 4

Know what beers law states

Answer 4

When a light enters a solution the light is composed into single wavelengths. The white light is a mix picture of different wave lengths

Question 5

Know the definitions:

Brownian movement
Diffusion 
Net Diffusion 
Osmosis
Net osmosis 
Osmotic pressure

Answer 5

1. Accounts for process of diffusion
2. Movement of molecules from a higher to lower concentration
3. Distribution of solute molecules
4. Diffusion of water
5. Moves water molecules from higher to lower concentration
6. Concentration of dissolved particles

Question 6

Understand “tonicity” and the terms hypotonic, hypertonic and isotonic

Answer 6

Tonicity: Measure of osmotic pressure gradient
Hypertonic: cells contain a higher centration of NaCl
Hypotonic: lower concentration of NaCl
Isotonic: equal concentration

Question 7

What are the four rules that govern the rate of diffusion

Answer 7

1. temperature
2. concentration
3. distance
4. material

Question 8

Know the definition of: photoreceptors, mechanorecptors, thermoreceotors, osmoreceptors, chemoreceptors and nociceptors

Answer 8

Photoreceptors: responsible for light
Mechanoreceptors: sensitive to mechanical energy
Thermorecptors: sensitive to hot and cold
Osmoreceptors: detects change in concentration or body fluids
Chemoreceptors: sensitive to certain chemicals
Nocicptors: pain receptors

Question 9

Know the term Emmetropin:

Answer 9

normal eye, perfect vision

Question 10

Know the term: Myopia

Answer 10

eye too long, nearsighted

Question 11

Know the term: Hyperopia

Answer 11

eye too short, farsighted

Question 12

Know the term Astigmatism:

Answer 12

Blurred vision, misshapen cornea or lens

Question 13

Know the term Nystagmus:

Answer 13

Involuntary eye movements, eye flickers neck and forth

Question 14

Know the term Presbyopia:

Answer 14

Lense losses elasticity

Question 15

Babinski

Answer 15

Foot was touched, toes curl up that means there’s damage, toes curl, there’s no damage to the neuropathways

Question 16

Pupillary

Answer 16

Kept eyes closed, turn on the light then opened eyes, eyes constricted then doubled in size

Question 17

Consensual

Answer 17

One eye opened, the other eye closed, one eye has a light shined on it but both constrict

Question 18

Ciliospinal

Answer 18

Pinch on the neck and eyes dilated because the bodies sympathetic response