Welcome to your ENTRANCE BIOLOGY 2016
1.
Gene flow is the movement of genetic material
2.
Which one of the following options is a constituent of peripheral nervous system?
3.
Which one of the following structures of neurons is correctly paired with its function?
4.
Which one of the following statements explain how nerve impulse is occurred? It occurs as a result of
5.
Which one of the following statements is an acceptable justification of the importance of synapse? Synapse is
6.
Assume your friend has a blood type that has no antigen on his red blood cells hut produces antibodies and b, loses blood due to a car accident. If blood transfusion is necessary to save his life, your friend can receive blood from someone with
7.
The binomial system of naming developed by Linnaeus comprises two names. Which hierarchical groups are used?
8.
Which one of the following is the feature of kingdom Mon era? Its members are
9.
Which alternative given below is comprised of harmful groups from the kingdom Mon era, Protista and Fungi, respectively?
10.
Which one of the following is a feature of Octopi and squid in phylum Mollusca? They bave
11.
What mechanism was used by Gregor Mendel to protect the garden peas from self-pollination? He
12.
Gregor Mendel crossed two pure-breeding traits of pea plants in his experiment and found only one of the traits expressed in the first generation. This shows that the
13.
Which one of the following statements correctly describes chromosome structure?
14.
The breeding mechanism that improves the performance of animals or plants using particular traits is
15.
Which one of the following birth control methods is correctly matched with its function?
16.
The ability of carnivores to survive in an ecosystem is dependent on the availability of prey. This can be considered as
17.
This item is based on the following pyramid of biomass.
Which alternative contains organisms that can occupy the above pyramid of biomass from the bottom to the top?
18.
The two reverse processes that play a significant role in absorbing and releasing carbon dioxide, respectively are
19.
Which one of the following adaptations is important for survival of polar bear in very cold environments? Having
20.
A student concluded that the stage of meiosis on a prepared slide of plant tissue he observed was Anaphase II. What do you think was the reason to come to this conclusion? Observation of
21.
Which one of the following plant species is endemic to Ethiopia?
22.
Which one of the following national parks of Ethiopia is declared as the world's heritage site and comprises endemic animals like Walia ibex?
23.
A mother milks her cow every morning and the milk usually forms curd after three days. What is the first step to investigate why this change happens?
24.
A drug efficacy test was conducted under similar set up on two groups of infected mice ( A and B), groups A were the control whereas group B were experimental group. A student gave a placebo to the control group and the drug to the experimental group. At the end, the experimental group got better. Which one of the following is true about the result?
25.
Suppose you did an experiment in a biology laboratory and need to report your work to your biology teacher. Which one of the following steps is correct to report the finding?
26.
Which one the following statements explains how the allosteric inhibitors affect enzymes activities? By binding to the
27.
Why are enzymes considered special molecules in metabolism? Because
28.
Which of the following is the most advanced and recent event in the history of cell biology?
29.
A student focused a slide of an onion epidermal cell on pre-estimated width of 2 millimeter field of view under a microscope. What will be the width of each individual cell if you count cells that fit to the field of
30.
Which one of the following statements is correct about the differences between eukaryotic and prokaryotic cells? Prokaryotic cells have
31.
Which biological tool is correctly matched with its function?
32.
A student centrifuge a solution containing plant material in order to separate them based on their mass. After 10 minutes of centrifugation some of the components move to the bottom (A). others to the middle layer (B) and the remaining once to the top layer (C). Which alternative shows the mass of the components in decreasing order?
33.
Which one of the following statements shows the future promise of biological sciences?
34.
Which one of the following alternatives contains only organic molecules?
35.
Which one of the following properties permits insects to freely walk on water? Its high
36.
Which one of the following properties of enzymes shows their catalytic nature?
37.
If an enzyme is named as ”EC 3.4.11.1." in a systematic naming, what does the number " 3 ” represents? It represents the
38.
In the lock-and-key model of enzymatic action, the activation energy is lowered through
39.
Which one of the following minerals are used as cofactor for the enzymed alcohol dehydrogenase?
40.
40 A student made an experiment to observe the effect of temperature on catalase of mashed potato. After three parallel trials, he obtained the following results.
At which temperature was the reaction fastest?
41.
Which one of the following organic molecules has ester bonds in its molecular structure?
42.
Which one of the following statement is correct about the structural organization of hemoglobin? It is formed
43.
The presence of large amount of lipid reduces the density of an animal. Which function of triglycerides is related to this fact?
44.
The missing number represented by the letter " n " in the formula of maltose (C12 h10 O11)is
45.
According to biological scenario, structure is related to function, which one of the following is correctly described?
46.
As compared to the exhaled air, the inhaled air contains
47.
A student conducted a food test on three unknown food samples and obtained results as presented in the table below.
What do you conclude from the result of the
above experiment?
48.
What is the scientific reason behind the preference of high altitude areas for training by the Ethiopian Athletes? Because
49.
How does oxygen is transported in the human body? It is transported
50.
Which one of the following statements is well justified, why the left ventricle is tough in nature? Because it
51.
Which one of the following statements is true about female genital mutilation? It
52.
Assume that you have a friend who is HIV positive and you are familiar about the case. How can you support your friend if she is injured and needs your help?
53.
Why are root hairs efficient in uptake of water from the soil? Because they
54.
What will happen to a plant if the apical dominance is removed through repeated pruning? The
55.
A farmer sowed cotton seeds in a farm land which fulfills the optimum conditions for germination. After a few days, he observed the newly growing seedlings. Which of the following statements is correct about the farmer s observation? The
56.
Which one of the following is the main function of Bowman's capsule of the human kidneys?
57.
What is the justification for feeling warm while sweating a lot in a very humid condition?
58.
As a result of human activities, huge amount of carbon dioxide has been accumulated in the atmosphere. What is the consequence of this phenomenon?
59.
Among the following statements, one briefly describes the concept of climate change. It is the
60.
What was the main objective of the United Nations Framework Convention on Climate Change (UNFCCC)?
61.
Which one of the following research activities has been conducted at Armauer Hansen Research Institute?
62.
Which one of the following alternatives contains only protein rich cereals?
63.
Which one of the following statements is correct about the process of digestion in the stomach?
64.
Which one of the following statements is correct about the role of trypsin in digestion? It acts on
65.
Which one of the following descriptions about absorption of nutrients in the digestive system is correct?
66.
What is the main function of the dermis of the skin?
67.
This item is based on the following diagram about eye structure.
The part of the eye represented by letter " Y " is
68.
A man observed elementary school students spinning around, and realized that none of them could properly walk upright after sudden interruption of the spinning. Which one of the following is the correct reason for this condition?
69.
Which of the following is the correct description of hormones? They are chemical messengers that
70.
Homeostasis is a mechanism of
71.
Which one of the following arrangement of molecules in the fluid mosaic model of the cell membrane is correct?
72.
What is the role of cholesterol in the cell membrane? It
73.
This item is based on the following table about the function of cellular
Which numbers in the above table show the correct function of the given organelles?
74.
Potato slices of equal weighed were immersed in four different concentrations of salt solutions. The solutions were 1.5, 1.0, 0.5, and 0.1 molars. After a day, the potato slices were reweighted. Which potato slice weights the least? The one from
75.
Suppose you took a container and divided it into two halves by a membrane which is permeable to water and labeled the two halves as ” A " and "B". Finally, you added hypertonic solution in "A" and hypotonic solution in ’B". What will he the expected result of this experiment? The water level of
76.
During oxidative phosphorylation, ATP is produced by combining ADP and inorganic phosphate using energy released from
77.
In a fox population, foxes with thicker fur survived better in cold climate compared to those with thinner fur, however, foxes with thinner fur survived better when the climate was very hot. What type of natural selection is described in this scenario?
78.
Which one of the following comparisons between substrate level and oxidative phosphorylation is correct? During substrate-level phosphorylation
79.
Which one of the following determines the cause and effect of lactate production during physical exercise? The demand for
80.
The view of biochemical origin of life hypothesized that the first life-forms appeared in warm primitive ocean and were heterotrophic. Which one of the following statements can support this idea?
81.
Which statement shows the correct comparison between the Lamarck's and Darwin's theory of evolution?
82.
Which of the following is true concerning the evidences of evolution?
83.
In Human evolution brain size increased over the courses of evolution: While alternative contains hominids arranged in an increasing order of brain size?
84.
The type of gene mutation that results in the change of a triplet (GAG) in a normal hemoglobin to another triplet (GTG) in sickle-cell hemoglobin is
85.
Which one of the following statements correctly explains the genetic drift? It is a change in allele frequency due to
86.
Identify the correct mechanism of bacterial reproduction by conjugation.
87.
Which one of the following features is NOT the characteristic feature of fungi? They
88.
What is the argument behind the need of appropriate host cell for viruses to replicate themselves? Because viruses
89.
Which one of the following diseases and their mode of transmission is correctly matched?
90.
What is the basic difference between anabolism and catabolism?
91.
A transgenic organism is an organism that
92.
Which of the following explains how biology takes part in biosensor technology? Using microorganism to
93.
In a textile industry microorganism's commercial products play significant role in removing stains like grease by changing
94.
Which one of the following statements is correct about application of biopesticide in agriculture? It
95.
Which one of the following statements correctly describes bacteria? They are
96.
Which one among the following processes occurs during the light independent phase of photosynthesis?
97.
As compared to non- cyclic photophosphorylation, the cyclic photophosphorylation uses the
98.
Which one of the following chemical reactions summarizes the process of photosynthesis?
99.
Which one of the following statements properly describes the structure of ATP? It is made up of
100.
Which one of the following descriptions about glycolysis is correct? It is a process
