Download Modul Ka f4 2011 Combine(t) PDF

TitleModul Ka f4 2011 Combine(t)
TagsMeiosis Endoplasmic Reticulum Respiratory System Breathing Cellular Respiration
File Size358.9 KB
Total Pages44
Document Text Contents
Page 1

CHAPTER 2 – CELL STRUCTURE AND CELL ORGANISATION

QUESTION 1 :

No Marking Criteria Marks

1(a) Able to draw and label a green plant cell

Diagram – 2 marks [function, neat]

Labels :

5 correct – 4 marks

4 correct – 3 marks

3 correct – 2 marks

2 correct – 1 mark.

2

4

6

(b) Able to state the functions of three organelles in the plant cell

3

+

3 6

Organelles Functions

1. Nucleus - controls all activities of the cell //

- determine characteristics / cell functions.

2. Vacuole - store chemicals such as water/ amino acid/

sugar/ mineral / waste products //

- regulates water balance // supports

3. Mitochondrion - the site of energy production // cellular

respiration

4. Lysosome -breaks down complex organic molecules /

protein/ lipid / polysaccharides /nucleic acids

5. Chloroplast -traps sunlight (energy) during photosynthesis

6. Ribosome - the site of protein / enzyme.synthesis

Cell wall

Chloropla
st

Cytoplasm

vacuole

nucleus

Page 2

No Marking Criteria Marks

7. RER - Transports protein (made by

ribosomes) to Golgi apparatus/

other parts of the cell.

8. SER - synthesis of lipid /

phospholipids / steroids //

- detoxification of drugs /

poisons.

9. Golgi Body/

Apparatus



- Processing/ packaging /

transporting centre of the

synthesised proteins (such as

enzyme / hormone / antibody,

phospholipids and

carbohydrates & glycoproteins

(such as mucus).

(c) Compare and contrast a plant cell with an animal cell.

1

1

1

1

1

1

1

1

8

QUESTION 2 :

Similarities :

Both have a nucleus/ a plasma membrane/ mitochondria/ ribosomes/

endoplasmic reticulums/ cytoplasm/ Golgi apparatus

Any 2

Differences :

Animal Cell Structure/
Characteristic

Plant Cell

Does not have a fixed
shape

Shape Has a fixed shape

Absent Cell wall Present
Absent Chloroplast Present
Absent // very small (if
any)

Vacuole Present

Food (carbohydrate) is
stored in the form of
glycogen

Food storage Food (carbohydrate)
is stored in the form
of starch

Present Centriole Absent

Page 23

No Marking Criteria Marks Total
Mark

2(a)(i)

(ii)

Able to describe the type of nutrition in organism P and organism

R.

Sample answers

Organism P

1 - Autotrophic nutrition

2 - Synthesize its own glucose / starch from carbon dioxide and water

with the help of light energy through the process of photosynthesis

Organism Q

3 - Heterotrophic nutrition/ holozoic

4 - Obtain its food source/organic substances from the surroundings

(eat plant/ producer)

Able to compare the process of cellulose digestion in organism Q

and organism R.

Sample answers

Organism Q Organism R

1 The type of diet is omnivores The type of diet is herbivores

2 Stomach has one chamber Stomach has four chambers

3 Microorganisms in the digestive

tract do not play an important

role in digestion of cellulose/ do

not have enzyme cellulase to

digest cellulose.

Bacteria and protozoa in rumen

and reticulum secrete the

enzyme cellulase to digest

cellulose

4 The food from the mouth is

swallowed to the stomach

without regurgitation.

The food from the mouth is

swallowed to the rumen and

reticulum, then it is regurgitated

into the mouth to be chewed

again before being swallowed

into the omasum.

Able to state the function and symptom of deficiency of these

2 + 2



6

4



6

Similarities

1 - Both have alimentary canal which are made up of the

oesophagus, stomach, small intestine and large intestine.

2 - Both are unable to produce cellulase to digest cellulose.

Differences

Similer Documents