Higher Level
2004 HL
1.
(a)
Name an autotrophic organism
…………………………………………………………………………
(b)
Give an example of a catabolic reaction
………….……………………………………………………
(c)
The conversion of atmospheric nitrogen to nitrates by bacteria is
called ……………………………...
(d)
What is the ratio of hydrogen atoms to oxygen atoms in a carbohydrate?
…………………………….
(e)
A relationship between two organisms in which both benefit is called
………………………..………
(f)
An example of a protein that has a structural role
……………………………………………..………
2006 HL
6.
(c)
Distinguish between the members of each of the following pairs by making a brief
comment on each.
Hypha and mycelium
……………………..……………………………………………………….………………
……..………………………………………………………………………….……………
…………………….…………..……………………………………………………………
2010 HL
3.
The diagram shows the structure of Amoeba.
(a)
Name the parts labelled A, B and C.
A ………………………………. B ……………………………….. C
……………………………......
(b)
To which kingdom does Amoeba belong?
….…………………………………………………………
(c)
Is the cell of Amoeba prokaryotic or eukaryotic?
….………………………………………………….
(d)
Give a reason for your answer to part (c)
....…………………………………………………………..
(e)
Give one function of A in Amoeba
……………………………………………………………............
(f)
1.
Give one function of B in Amoeba
………………………………………………………….......
2. Suggest one reason why B is more active in freshwater amoebae than in marine
amoebae.
………………………………………………………………………………………………
……………
Answer
Ordinary Level
SEC Sample Paper OL
2.
Bacterial cells have three main shapes. Two of these are shown below. Name each shape.
Name ………………… ……………………
Name …………………………………………
Bacteria reproduce asexually by dividing in two. What term is used for this form of asexual
reproduction?
……………………………………………………………………………………………………
What do bacteria form when environmental conditions become unfavourable?
…………………………..………………………………………………………………………
What does the term pathogenic mean in relation to bacteria?
…………………………………………………………………..………………………………
2005 OL
6.
(a)
The diagram shows the structure of Amoeba.
(i) Name A, B, C, D.
A
…………………………….
B
……………………………….
C
…………………………….
D
……………………………….
(ii) To which kingdom does Amoeba belong? ….…………………………………..
(b)
The diagram shows the structure of a typical bacterium.
(i) Name A, B, C, D.
A
…………………………..……. B
………..…………………….
C
……………………..…………. D
………..…………………….
(ii) To which kingdom do bacteria belong? ……………………………………………
Answer
2006 OL
6.
The diagram shows a yeast cell, which is undergoing asexual reproduction.
A.B. DOWSETT/SCIENCE PHOTO LIBRARY
(a)
Name A and B
A ………………………………… B
(b)
………………………………………
What type of asexual reproduction is shown in the diagram?
………...………………………………
…………………………………………………………………………………………………………
(c)
Which type of division, mitosis or meiosis, is involved in this form of reproduction?
…………………………………………………………………………………………………………
(d)
If yeast cells are kept under anaerobic conditions, alcohol (ethanol) and another
substance are produced.
(i) What are anaerobic conditions?
………………………….………………………………….……………………………………
……………………………………………………….……
(ii) Name the other substance produced.
…………………………………………………………...………………………………………
…………………………………………………………..
2011 OL
4.
Indicate whether each of the following statements is true (T) or false (F) by drawing a circle
around T or F in each case.
Example: The liver produces bile
T
F
(a)
The semicircular canals in the ear are involved in balance.
T
F
(b)
The growth response of a plant to light is called phototropism.
T
F
(c)
Tendons attach bone to bone.
T
F
(d)
A motor neuron carries impulses to the brain.
T
F
(e)
Rhizopus is a member of the animal kingdom.
T
F
(f)
Xylem transports water in plants.
T
F
(g)
A potato is a modified stem.
T
F
2012 OL
2.
Amoeba is a tiny, one-celled organism.
This diagram shows the structure of a freshwater Amoeba as seen through a microscope.
(a)
Name the parts labelled A, B, C and D.
A. ____________________________
B. ______________________________
C. _____________________________
D. ______________________________
(b)
State:
one function of part A.
______________________________________________________________
one function of part C.
______________________________________________________________
(c)
Give one difference between a plant cell and an amoeba.
__________________________________________________________________________________