B???: Required Practicals WIP

Question 1

Microscopy:

What is the equipment involved with the microscopy practical?

Answer 1

\+ A light microscope
\+ An organic sample (Onion epidermis or Human cheek cells)
\+ A slide
\+ A stain (Iodine)
\+ A coverslip

Question 2

Microscopy:

How do you prepare a slide?

Answer 2

1. Remove a cell thick layer of a sample
2. Place it on a slide
3. Add a stain such as iodine (two drops). Sometimes a drop of distilled water is added as well
4. Place the coverslip over the sample

Question 3

> < Microscopy:

How do you use a light microscope to observe a specimen?

Answer 3

1. Place the sample slide on the stage
2. Set it to the lowest objective lens
3. Use the coarse focus knob to bring the sample into rough focus
4. Use the fine focus knob to make the sample clear

Question 4

Microscopy:

What is the equation of magnification, as well as the equation for total microscope magnification?

Answer 4

Equation of Magnification:
Image size = Actual Size x Magnification

Equation for total microscope magnification:
Eyepiece magnification x Objective lens magnification = Total magnification

Question 5

> < -O- Microbiology:

What is the equipment involved in the microbiology practical?

Answer 5

\+ A Petri dish
\+ A culture medium (Agar Jelly)
\+ An inoculating loop
\+ Paper disks
\+ A range of antibiotics or disinfectants
\+

Question 6

> < -O- Microbiology:

How do you prepare an uncontaminated culture?

Question 7

-O- Microbiology:

What is the methodology of investigating the effects of certain antibiotics & antiseptics on bacterial growth?

Question 8

-O- Microbiology:

What is the inhibition zone, and how is it measured?

Question 9

Osmosis:

What is the equipment used in the Osmosis practical?

Answer 9

\+ A Sample (Tubers or bulbs)
\+ A Cork Borer
\+ A ruler or measuring apparatus
\+ A knife
\+ A high-resolution, calibrated set of scales
\+ A test tube rack
\+ A set of test tubes
\+ Varying solutions of water & sugar/salt (0, 0.25, 0.5, 0.75 & 1 mol/dm3)
\+ Dry paper towels

Question 10

Osmosis:

What is the methodology of the Osmosis practical?

Question 11

Osmosis:

How can the results of the Osmosis practical be graphed, and what do they tell us?

Question 12

Enzymes:

What is the equipment involved with the enzyme practicals?

Question 13

Enzymes:

What is the methodology of the enzyme practical?

Question 14

Enzymes:

What do the results of the enzyme practical tell us, and how can they be graphed?

Question 15

Food tests:

What are the four tests for food molecules?

Question 16

Food tests:

How do you prepare a food sample to be tested?

Question 17

Food tests:

How do you test a food sample for Monosaccharides (Glucose)?

Question 18

Food tests:

How do you test a food sample for starch?

Question 19

Food tests:

How do you test a food sample for Proteins?

Question 20

Food tests:

What are two methods of testing a food sample for lipids?

Question 21

Photosynthesis:

What is the equipment used in the photosynthesis practical?