Welcome to your Biology 2008
1.
Which of the following food types would most likely give a negative result upon addition of iodine solution?
2.
Which process produced mRNA during protein synthesis?
3.
What is the molecule in plant cells that first captures the radiant energy from the sun light?
4.
Of the following functions, which one do triglycerides accomplish in cells?
5.
Which of the following laboratory glassware is used for culturing bacteria?
6.
of the following, which one is the main source form which plants get the nutrients necessary for their growth and development?
7.
Which of the following is the correct sequence of the steps in scientific research?
8.
Which of the following types of cancer is known to mostly develop in AIDS patients?
9.
How many fatty acids would a cell need to form a molecule of triglyceride
10.
Which part of the human elementary canal contains digestive enzymes that function at acidic pH?
11.
Which of the following is the correct constitution of the sex chromosome of a normal woman?
12.
From which of the following does the O2 released during the process of photosynthesis originate?
13.
What is the best term that expresses the movement of substances in cells against their concentration gradient?
14.
In cell division, what is the phase that comes following the metaphase called?
15.
Who was the person that first observed living cells moving around when he examined drops of water under the microscope?
16.
Which of the following is true about gene mutation?
17.
What is the circumstance that causes the health condition known as sickl-cell anaemia?
18.
Based on similarity in number of amino acids found in haemoglobin, which one of the following animals has closer phylogenetic relations to human beings?
19.
In which of the following groups of living organisms do the cells lack organized nuclei?
20.
Which one of the following terms refers to the failure of sister chromatids to separate from one another during anaphase?
21.
If two species are known to belong to the same order ,they must also belong to the same which taxonomic categories?
22.
What happens in first reaction of the Krebs cycle during energy transformation?
23.
What do you call structure that have the same evolutionary origin even though they may now have different structural make-ups or functions?
24.
For what purpose do biologists use the GPS receiver?
25.
Which of the following organisms usually forms the pioneer community in the primary biological succession?
26.
In an experiment designed to study the effect of temperature on the rate of seed germination ,which of the following should the experiment vary?
27.
In the carbon cycle, which of the following processes removes carbon dioxide from the atmosphere?
28.
Which of the the following sequences represents the correct change in number of chromosomes during fertilization?
29.
"Rats can be produced by keeping rags and grains at a corner of a room". Which of the following thinking supports this statement?
30.
What is the specific name of biological scientists who do research that tries to find evidence of life on other planets in the solar system?
31.
Which of the following industries can reduce more CO2 emission by shifting to the use of enzyme in the manufacturing process?
32.
Which of the following is made of globular proteins?
33.
Which of the following events happened before all the others?
34.
Under what conditions do C4 plants have more photosynthetic efficiency than C3 plants?
35.
Which of the following is NOT a universal property of all living things?
36.
In which area of enzyme application is invertase injected to sucrose paste in order to produce liquid chocolates?
37.
Which of the following function best at higher optimum pH than all the rest?
38.
Which class of enzymes joins to molecule together by formation of new bonds?
39.
Which of the following has a bigger size than all the other?
40.
How does a simple microscope differ from a compound microscope?
41.
Which of the following molecules can serve as a raw material for industries that produce glucose?
42.
In enzymes that contain non-protein organic molecules, in addition to the protein component, what is the protein component called?
43.
Which of the following should be done in order to remove an enzyme inhibition caused by a competitive inhibitor?
44.
Which of the following parts of the plant cell is NOT a living component of the cell?
45.
What are the possible consequences of deforestation of the tropic rain forest?
46.
Which of the following processes releases CO2 in to the atmosphere?
47.
If an area is dominated by just one species having very many individuals, what would be its index of diversity?
48.
Which of the following is true about sex determination in birds?
49.
How many amino acids are there in all known proteins?
50.
Which of the following is the major mechanism by which AIDS is transmitted?
51.
What percentage of the F2 progeny of a monohybrid cross is expected to have the recessive phenotype?
52.
Which of the following is NOT true about innate behaviours?
53.
To which one the following classes of stimuli do pheromones belong?
54.
Which of the following types of microscope is most suitable for a detailed study of the surface structure of an object ?
55.
According to the fluid-mosaic model of the plasma membrane, what does the word 'mosaic' refer to?
56.
Which of the following diseases is correctly matched with its causative agent?
57.
Which of the following organic compounds would release both nitrogen and sulphur to the ecosystem when decomposed?
58.
Among the vertebrate found In ethiopia, which class has the highest percentage of endemic species?
59.
Which of the following terms refers to the movement of individual out of a population?
60.
Which of the following crosses will produce progeny with phenotypic ratio of 3:1?
61.
Which of the following changes that happened during human evolution had the most contribution to the evolutionary success of Homo sapience?
62.
Woodlice are observed avoiding light and heat by quickly moving to moist and darker areas. Which behavior of these animals helps them to detect differences in light intensity and move to the darker and moist part of the habitat?
63.
In Ethiopia animal diversity ,which group is presented by the highest number of orders, families, genera and species
64.
Why mutations are important in evolution
65.
Which of the following processes involved in the water cycle is carried out by green plants?
66.
Deficiency of which of the following nutrients in human diet is likely to result in deficiency of some co-enzyme like FAD?
67.
If someone suddenly removes his/her hand from a very hot object, which of the following types of behavior is manifested?
68.
Which step in the HIV life cycle is disrupted by antiretroviral drug that competitively inhibits the reverse transcriptase enzyme?
69.
During which of the following processes in cellular respiration are most of the ATPs formed?
70.
Which of the following pairs are ANALOGOUS structures?
71.
Which of the following involves trial and error learning ?
72.
Which of the following is the adaptation by C4 plants that helps them to avoid photorespiration?
73.
If a codon on a messenger RNA is UUU, what is the complementary anticodon on the transfer RNA?
74.
If a clone is produced by transferring a nucleus of animal A to an enucleated egg of animal B and the egg is then implanted in the uterus of animal C, which animal would the clone resemble most?
75.
Which of the following classes of fatty acids is without carbon-carbon double bond?
76.
Choose the one that had the LEAST contribution to human evolution?
77.
In which biome are epiphytes typically present as a characteristics element ?
78.
If it is known that the total amount of DNA in a cell is 300 units and that adenine contributes 70 of these units, how many units go to cytosine?
79.
What is the substance that helps to keep the biological membrane in a fluid state?
80.
which of the following substance is NOT formed when yeasts ferment glucose?
81.
Which phosphate bond of the ATP is broken when the energy it contain is needed for cellular activity?
82.
What is the advantage that a photosystem containing molecules of different types of light sensitive pigments have?
83.
How many years have passed since Darwin's book on the theory of evolution was published?
84.
Which of the following can be understood about living things from the study of how breeders improve domesticated plants and animals?
85.
Which of the following is responsible for the bending of a young plant towards a unidirectional source of light?
86.
In what way would AIDS patients benefit from the treatment with anti-retroviral drugs?
87.
If a country has a large number of young people relative to the number of old people, to which category of countries does it belong?
88.
Which of the following is the best collective name for all bacteria with spherical shape?
89.
Suppose two heterozygous round yellow (RrYy x RrYy) pea plants wear crossed and 128 seeds were produced, how many of the seeds are expected to be heterozygous around yellow?
90.
Which of the following way is an important way by which green plants mitigate the green house effect?
91.
What causes tomato fruits to ripen much more slowly when kept in a refrigerator than if left on a table at room temperature?
92.
Which characteristics of RNA makes it suitable for moving out of the nucleus?
93.
Why does sucrose give a negative result when mixed and heated with Benedict's solution?
94.
What does an evolutionary selective pressure that acts around the mean do?
95.
Which of the following is consistent with science?
96.
In his theory of evolution, the cause of which of the following concepts was MISSING in Darwin's explanation
97.
which of the following is a learned behaviour?
98.
Which of the following diseases is transmitted by mosquitoes?
99.
In which of the following are all the tools mainly used in the laboratory rather than in the field situation?
100.
Which aspect of biotechnology is considered strictly genetic engineering
