Welcome to your biology 2009
1.
The word science comes from the Latin word 'Scientia' meaning what ?
2.
Which of the following substance can be used over and over again in an enzyme catalyzed reaction?
3.
What is the intermediate compound that is formed during an enzyme catalyzed reaction?
4.
Which of the following microorganisms are prokaryotic?
5.
Which of the following laboratory tools is LEAST accurate to measure 1 ml of liquid?
6.
From which of the following diseases can one be protected by sleeping under the cover of a mosquito net?
7.
Which of the following parts of the flower did Mendel remove from young flowers to prevent self- population ?
8.
What do we call the place where organisms live in their ecosystem ?
9.
Which of the following is the sex chromosome constitution of human males?
10.
Which of the following plants use CAM photosynthesis?
11.
Which of the following bases is NOT found in RNA?
12.
In a report of the scientific experiment description of which of the following comes before all the others?
13.
Which one of the following is different from the other three?
14.
What happens when a plant cell absorbs in more water?
15.
Which level of protein structural organization involves two or more polypeptide?
16.
Which of the following do biologists consider ancestral to the higher organisms of today?
17.
Which type of fatty acids is healthier when used as a human food source?
18.
Which of the following is NOT recycled in the ecosystem?
19.
What kind of cross is performed to determine whether the parent was homozygous or heterozygous ?
20.
Which type of animal behavior happens with out learning?
21.
Which drop of iodine solution is added to a solution of a foodstuff and the foodstuff turns dark blue what dose the foodstuff contain
22.
Which of the following has the highest risk of HIV transmission?
23.
Which of the following elements is the most abundant in living things?
24.
Which of the following organelles is common to both plant and animal cells?
25.
Among the following organic molecules, identify the one that dose not contain nitrogen.
26.
If a cell fails to form lysosomes, which of the following cellular functions will get disturbed first?
27.
Most co-enzymes are the derivatives of which of the following enzymes would one use?
28.
To produce from starch, which of the following enzymes would one use?
29.
Which class of enzyme inhibitors has similar shape as that of the normal substrate?
30.
Fore a substance to easily pass arose the cell membrane by simple diffusion which of the following properties should it possess?
31.
Among the following factors that affect enzyme activity, which one dose NOT cause enzyme denaturation?
32.
Which of the following is a type of ecological succession that starts from a cleared forest area?
33.
Which of the following stage of photosynthesis can take place in the dark?
34.
Which of the following is the major role-played by bacteria and fungi in the ecosystem?
35.
If a heterozygous tall pea plant (Tt) is crossed with a short pea plant(tt) ,what percentage of the progeny is expected to be short?
36.
. Which of the following human cell types is attacked by HIV?
37.
Which of the following processes is most important to release nutrients from dead organic matter in to the soil?
38.
Which of the following biomes supports the highest diversity of plant and animal life?
39.
Which of the following demographic factors can increase the size of the world population?
40.
When Mendel crossed a tall pea plant with a short plant the F1 progeny were all tall what F1 did he obtain when he made the reciprocal cross?
41.
Among the following ABO blood group genotype, which one produces two types which one produces two types of antigens?
42.
Which of the following methods do animal breeders use to produce domestic animals with hybrid vigor?
43.
Which of the following groups are believed to be the first photosynthetic organisms to evolve on earth?
44.
Which of the following factors brings about changes during both evolution and breeding of plants and animals?
45.
Among the following which one is held most responsible for the present fast depletion of the world biodiversity ?
46.
Which of the following reproductive isolating mechanisms keeps the horse and donkey as two independent species?
47.
Which of the following activities of an organism do we call a behavior ?
48.
A reflex that involves internal organs such as the heart is referred to as:
49.
At which of the following generation of crosses between dominant and recessive homozygote parents are all the progeny heterozygote?
50.
Which of the following organs serves as a coordinating system in a reflex action?
51.
Which type of enzyme catalyzes the joining of two molecules by the formation of new bonds?
52.
Which of the following statement about enzyme is NOT correct?
53.
Glycolysis occurs in the
54.
Anaerobic metabolism refers to the generation of ATP:
55.
The conversion of one molecule of glucose to two molecule of pyruvate results in the net formation of:
56.
During alcohol fermentation pyruvic acid in the presence of pyruvate decarboxylase is first converted to
57.
The total amount of living tissue within a given trophic level is called:
58.
Biomes where trees predominant are called
59.
The goals of biodiversity conservation include all of the following EXCEPT
60.
The maximum population growth rate characteristic of a species is called
61.
from among the following choice the field which is a branch or a part of biotechnology.
62.
which of the following is publicly an UNDESIRED research activity
63.
which of the following alternatives contain ONLY organic molecule?
64.
which test is suitable for checking the presence of lipids in foodstuffs ?
65.
How do heavy metal ions reduce the reaction rate of enzymes?
66.
What happens when enzymes become denatured?
67.
What happens when human red blood cell are kept in a hypertonic solution ?
68.
Among the following which one best describes the cell of bacteria?
69.
Which of the following nitrogenous bases of nucleic acids is a purine base?
70.
Which of the plants with the following genotype is hetrozygyous?
71.
Which of the following groups of viruses copy their RNA to DNA?
72.
Which of the following can reverse an enzyme inhibition that is caused by an allosteric inhibitor?
73.
During the Krebs cycle, to which of the following molecule is most of the energy released from food transferred?
74.
If in a DNA molecule consisting of 1000 base pairs, there are 300 adenine bases, how many guanine bases will be present?
75.
During which stage of aerobic respiration dose oxidative phosphorylatuion occur?
76.
What mode of feeding do soil organisms that release nutrients from dead organic matter in to the soil have?
77.
When farmers are using fewer and fewer number of crop verities, what would happen to the genetic diversity of our crop plants?
78.
During anaerobic respiration, what is the gross number of ATP molecules that are produced per glucose molecule?
79.
Among the following four processes, identify the one that probably evolved before all the other three.
80.
Which of the following is NOT a learned behavior?
81.
If an actively growing seedling is kept horizontally, which of the following would eventually happen to the seedling?
82.
Which of the following was the most possible mode of evolution by which the many species of Darwin's finches evolved on the Galapagos Islandeds?
83.
For which of the following processes is ATP NOT required?
84.
Mutation may be described as:
85.
Which of the following is the most UNLIKELY action that would be expected from Ethiopians who have been given adequated biological literacy?
86.
Which form of mutation is responsible for the diseases known as leukemia?
87.
Which of the following characteristic can show the evolutionary relationships among organisms?
88.
Which of the following species isolating processes could lead to the evolution of a new species by the mechanisms known as sympatric speciation?
89.
What is an apoenzyme?
90.
For which of the following can divergent evolution be taken as an alternative name?
91.
Which one of the following is the result of the similarity observed between the wings of a bird and a pterodactyl?
92.
Which of the following played an important role in the evolution of human being?
93.
In which one of the following do we use genetically modified bacteria for purpose other than human health?
94.
which knowledge about cell biology scientists discover after all the others?
95.
Which of the following statements can be considered as the better definition of the biological concept of behavior?
96.
To which category of behavior does the human behavior that involves the strengthening of existing responses or the formation of new responses to existing stimuli that occur because of practice or repetition belong?
97.
Which of the following is NOT grouped under genetically pre-programmed pattern of behavior?
98.
Which group of bacteria reduces nitrate to nitrogen gas in th nitrogen cycle?
99.
The main factors that determine the types of terrestrial biomes in a certain geographical area are:
100.
In which parts of Ethiopian are Lions, Elephants, & Giraffes found more community?
