Welcome to your GRADE 12 BIOLOGY MODEL EXAM 2016
Addis Ababa City Government Yeka Subcity 2016 Biology Model Exam for Grade12
DIRECTION: Each of the following questions is followed by four possible alternatives.
Read each question carefully and BLACKEN the letter of your choice on the answer sheet provided
1.
Ethiopian biologist who is known for his vaccine against rinder pest?
2.
One of the following is NOT the research area of Institute of Biodiversity Conservation.
3.
Which of the following works with calcium to build strong bones?
4.
The type of environment in which halophiles live in:
5.
Identify the statement that describes hyperthermophiles.
6.
All of the following statements are TRUE about Archaea EXCEPT _____.
7.
Which one of the following is NOT the beneficial aspects of archeabacteria?
8.
Which one of the followings is NOT a physical factors that can affect the microbial growth?
9.
Which one of the following feature describes fungi?
10.
Which one of the following is NOT the beneficial aspects of biogas?
11.
Which one of the following is the commonest fungi used in the production of enzymes?
12.
One of the following enzyme is used in maximization of juice extraction.
13.
A device that measures biological reactions by generating signals proportional to the concentration of analyte in the reaction is:
14.
The conservation area which is designed to give maximum protection to the largest wild animals is:
15.
Which of the following substances mostly increase the greenhouse effect?
16.
Which one of the following methods is used to conserve wildlife?
17.
One of the following animal feed is produced by the mass culture of bacterium Methylophilus methylothropus.
18.
Antibiotics attack bacteria in all of the following ways EXCEPT:
19.
One of the following human action would contribute towards conservation of natural resources.
20.
Which of the following plant is NOT endemic to Ethiopia?
21.
Diabetes mellitus is caused when pancreas unable to produce or produce little amount of one of the following hormones.
22.
One of the following pair of hormones act antagonistically in regulating the level of glucose in the blood.
23.
Which one of the following eye defects is CORRECTLY matched with its corrective measure?
24.
The CORRECT pathway of an impulse during reflex actions is:
25.
If a person becomes restless and sees things that do NOT exist, you can decide that the drug is most probably be:
26.
The CORRECT pathway through which light passes as it reaches the retina is:
27.
Which of the following structures is found in the fluid filled portion of the ear?
28.
What is the charge on the outer side of a neuron in the resting phase?
29.
Which one of the following nutrients is INCORRECTLY matched with its function?
30.
Which one of the following is the CORRECT match of nutrients, type of test and color observed when the test result is positive?
31.
A grade 12 student demonstrated the effect of osmosis on plant cells using onion epidermal cells. He put the onion epidermal cells in distilled water for 30 minutes and then observed under the microscope. The cells he observed became:
32.
What is the best term that expresses the movement of substances in cells against their concentration gradients?
33.
One of the following is CORRECT match of food items, digestive enzyme and product of digestion?
34.
The amount of air that enters the lungs during normal restful breathing is called
35.
The gap across which an impulse passes from one neuron to the other neuron is known as:
36.
An individual who is under an increasing effect of drinking alcohol loses the ability to think clearly at first and to walk properly at second. Then, he loses the ability to breathe in normal way. Based on this case, choose the correct order in which alcohol affects the central nervous system?
37.
Which of the following is CORRECT about aerobic respiration?
39.
Suppose the blood pressure of a person is found to be 120/80, which of the following is correct?
40.
A plant cell has 10% of sucrose concentration in its cytoplasm. If the cell is immersed in 1% sucrose solution, it will:
41.
Which one of the following is important for a better contrast in microscopic observation?
42.
Immunity passed from mother to new born baby through breastfeeding is described as:
43.
Which of the following is introduced during smallpox’s vaccination?
44.
Which one of the following is a CORRECT pairing of nitrogen bases in DNA molecules?
45.
A DNA molecule has 30 guanine and 80 adenine, what is the total number of bases found in DNA? A DNA molecule has 30 guanine and 80 adenine, what is the total number of bases found in DNA?
46.
How do plants absorb mineral ions from the soil?
47.
What is the importance of turgor pressure for plants? It
48.
What is the relationship between a DNA, gene and a chromosome?
49.
At which stage of meiotic cell division does sister chromatids separate?
50.
Which one of the following statement correct about mitosis cell division?
51.
Which of the following is NOT a method of conserving natural resource?
52.
Why did Mendel do his experiment on a pea plant? To see how the peas
53.
Which of the following is the CORRECT constitution of the sex chromosome of a normal woman?
54.
Suppose 2000 pea plants are produced from Tt X tt cross. How many of them are expected to be tall and short respectively?
55.
Suppose a man with blood group of heterozygous B married a woman with blood group homozygous A, what will be the possible blood group of their children?
56.
Which of the following is NOT included under secondary sexual characteristics in males?
57.
What hormones control puberty in females?
58.
Which of the following method of contraception is considered as a barrier method?
59.
Which of the following is TRUE about homoeothermic animals? They
60.
Which one of the following is NOT a homeostatic function of the liver?
61.
Which one of the following is NOT found in the glomerular filtrate?
62.
In which of the following portions of a nephron does the hormone ADH have an effect in changing its permeability to water?
63.
Which one of the following happen when you drink too much water?
64.
Which one of the following is an external feature of a leaf?
65.
Which one of the following takes place in light dependent reaction of photosynthesis?
66.
Which of the following requirements of photosynthesis can be demonstrated during experiment using variegated leaf?
67.
If a ring bark is removed from a woody shoot, after some days the tree will die. This is because of,
68.
Which of the following plant hormone is CORRECTLY matched with its function?
69.
Which one of the following bacterium act as a vector to transfer desired gene into dicot plant?
70.
One of the following bacterium is NOT used as a biopesticide?
71.
Which one of the following is INCORRECT about insect resistant crops?
72.
Which one is INCORRECT about transgenic plants?
73.
Which one is NOT true bout cloning?
74.
Which one of the following is the CORRECT statement about Dolly?
75.
One of the following is characteristics of bacteria?
76.
Compared to gram-positive bacteria, gram-negative bacteria
77.
Which one of the following microorganisms derive energy and electron from inorganic chemicals and inorganic electron donor?
78.
Who was the first person observed living cells moving around when he examined drops of water under the microscope?
79.
Biologists are working to reduce greenhouse gas emission by:
80.
An organism that carries genes manipulated through gene technology is referred as......
81.
Which one of the following is TRUE about biotechnology?
82.
Which one of the following is NOT a universal property of all living things?
83.
Unlike chemolithoheterotrophic, chemorganohetrotrophic organism
84.
Which one is the most common reproduction in bacteria?
85.
Which form of sexual reproduction in bacteria needs a vehicle to transfer foreign gene into bacterial cell?
86.
Which one of the following is CORRECT about the characteristics of archaea?
87.
Which one of the following bacterial disease affects nerves at synapse?
88.
Which one of the following microbes grows best at antarctic region?
89.
Which groups of fungi decompose organic matter?
90.
Which one of the following is INCORRECT about fungi?
91.
Which one of the following is NOT an example of fungal symbiosis?
92.
Which one of the following is the common type of asexual reproduction in yeast?
93.
Which one of the following fungal spore types are produced by asexual reproduction?
94.
Which one is INCORRECT about sexual reproduction in fungi?
95.
Which one of the following is NOT the beneficial aspect of fungi?
96.
Which one of the following fungal disease is caused by Candida Albican?
97.
A carcinogenic toxin produced by Aspergillus Flavus and A. parasiticus is called
99.
Which genera of bacteria and fungi produce antibiotics?
100.
Which of the following is the most common bacteria used for bioleaching?
