Download LSS Ex 5 (cells).

Hwa Chong Institution
Sec 1 Integrated Science
LSS Ex 5 - Cells
Name: ________________________(
Marks: ________ / 30
) Class: ______ Date: ________
Remarks: _______________________________
Section A : MCQ (10 marks). Write the answers (A, B, C or D) on Page 3.
Refer to the following list of cell components to answer Questions 1 and 2.
1.
2.
3.
4.
5.
6.
cell membrane
cell wall
chloroplast
cytoplasm
nucleus
sap vacuole
1. Which of these structures are found in both animal cells and in plant cells?
A
B
C
D
1, 2 and 5
1, 3 and 5
1, 4 and 5
2, 3 and 5
2. The hereditary materials of a cell can be found in the cell component labelled
A
B
C
D
3
4
5
6
3. The diagram shows a cell from the epidermis of an onion.
Which labelled structure controls the transfer of substances into and out of the
cell?
1
4. When several tissues group together to perform one main function, the
structure formed is called ________________________.
A
B
C
D
a division
a system
an organ
a multi-tissue
5. The fine adjustment on a microscope ______________________.
A
B
C
D
magnifies the specimen
gets the specimen roughly in focus
gets the specimen in sharp focus
allows light to reach the specimen
6. Human red blood cells and onion epidermal cells are similar in that they both
(1) have a nucleus.
(2) possess a cell membrane.
(3) have no chloroplasts.
A
(1) and (2) only
B
C
D
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
7. Which of the following are correct descriptions for a plant cell?
(1) The nucleus contains genetic material.
(2) Photosynthesis occurs in the cytoplasm.
(3) The cell wall is freely permeable to dissolved substances.
A
(1) and (2) only
B
C
D
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
8. Which of the following is a correct step for using a compound light microscope?
A
Use the coarse adjustment knob for focusing object under high power.
B
C
D
Close one eye when observing the specimen under the microscope.
Reduce the light intensity when observing under high power.
Adjust the specimen to the centre of the field of view before turning to a
higher magnification.
2
9. Several types of cells (e.g. cheek cells, white blood cells and bone cells) are taken
from a single individual. Which types of cells have the same genetic material?
A
Cheek cells and White blood cells
B
C
D
Bone cells and White blood cells
Cheek cells and Bone cells
All three types of cells
10. What are the cell walls of plant cells made of?
A
Cellulose
B
C
D
Glucose
Starch
Mineral salts
Section A : MCQ Answers (10 Marks)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Section B : Structured Questions (20 marks)
1. The diagram shows a single yeast cell.
3
(a) Identify and state the functions of structures A and B in the table below.
[4]
Name of Structure
Function
A : ……………….
B : ……………….
(b)
List one way in which a yeast cell is like a typical animal cell.
2. (a) Draw and label an animal cell.
(b) Label the part on your drawing with Y that shows partial permeability.
[1]
[3]
[1]
4
(c) Using the table below, state in 4 ways how plant cells differ from animal cells. [4]
Plant Cell
Animal Cell
(d) Explain the importance of the cell wall in plant cells
[2]
________________________________________________________________
________________________________________________________________
________________________________________________________________
3. The figures below show 2 different types of cells that can be found in the human
body.
A
B
(a) Identify the type of cell and state their respective functions.
[4]
Type of Cell A: ____________________________________________________
Function of Cell A: _________________________________________________
5
Type of Cell B: ____________________________________________________
Function of Cell B: _________________________________________________
(b) State one major difference between Cell A and Cell B (other than the shape). [1]
Quote of the Day
A lost battle is a battle one thinks one has lost.
Ferdinand Foch (1851-1929)
French Field Marshal
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