Group 2

Question 1

cellular organelles

Answer 1

• nucleus
• ribosomes
• endoplasmic reticulum
• Golgi apparatus
• Chloroplasts
• Mitochondria

Question 2

function of ribosomes

Answer 2

Decoding the message and the formation of peptide bonds.

Question 3

function of endoplasmic reticulum

Answer 3

to produce proteins for the rest of the cell to function.

Question 4

function of Golgi apparatus

Answer 4

helps process and package proteins and lipid molecules

Question 5

function of chloroplasts

Answer 5

convert light energy into relatively stable chemical energy via the photosynthetic process.

Question 6

function of mitochondria

Answer 6

that generate most of the chemical energy needed to power the cell’s biochemical reactions.

Question 7

identification of organelles in light microscope

Answer 7

walls, vacuoles, cytoplasm, chloroplasts, nucleus and cell membrane.

Question 8

identification of organelles in electron micrograph

Answer 8

cell wall, nucleus, vacuoles, mitochondria, endoplasmic reticulum, Golgi apparatus, and ribosomes

Question 9

how to use light microscope

Answer 9

1) Turn the light source on
2) Rotate the objective lenses until the shortest lens is in place. This is the lowest power objective lens
3) Adjust the distance between the eyepiece so that they are comfortable so your eyes
4) Place the slide in the microscope stage
5) Focus and centre the specimen using the low objective lens
6) Focus the eyepiece to adjust you view
7) Adjust the illumination to an appropriate level
8) Fine tune the illumination
9) Focus and centre the specimen using the medium objective lens
10) Focus and centre the specimen using the high objective lens

Question 10

rules for a biological drawing

Answer 10

• suitable sized drawing
• use lead pencil
• do not shade or colour
• do not sketch
• title appropriately
• include magnification
• indicate key features with labels
• labels must be ruled
• if labelling lager structure use this ] to position around the structure
• only draw what you see