Bharathidasan University 2006 B.Sc Computer Technology Science and Technology - Question Paper

Science and Technology

Time: three hours
Maximum Marks: 100
(Weightage 70%)

Your answers should be brief. Wherever possible, support your answers with facts and figures.
part A

ans all ques..

A1. (a) describe the following: (3)
(i) Robotics
(ii) Motor neuron
(iii) Decomposer

(b) provide name for every of the following: (4)
(i) The theory of evolution which was proposed by Dantin.
(ii) The 2 metals used in Bronze Age to prepare the alloy bronze.
(iii) The mineral whose deficiency causes goitre.
(iv) The scientist who gave the theory of universal gravitation.

(c) provided beneath are terms and 2 statemenis related to every of these. select the accurate statement. (3)
(i) Algal bloom : Promotes decomposers / Promotes Producers
(ii) Nutrient Cycle : Nitrogen fixation by bacterial Release of SO2 in the atmosphere
(iii) Art appreciation : Left cerebral hemisphere / Right cerebral hemisphere

A2. Anwer briefly within 50 words.

(i) What is belt drive ? In which form did it come to India ? (2)

(ii) describe a semiconductor, and name 2 elements most commonly used in semiconductors. (2)

(iii) State any 4 reasons for the tremendous increase in the population of our country. (2)

(iv) What is a computer software ? State the function of control unit in a computer. (2)

(v) elaborate the 2 factors that make scientific knowledge as objective ?

(vi) Name the planets of our solar system whose specific features are mentioned beneath : (2)
(a) Planet closes to the Sun.
(b) Planet girdled by 3 rings as viewed through a telescope

(vii) Which parts of the human brain would be involved in
(a) remembering a past incident ?
(b) regaining the balance of the body when about to fall down ? (2)

(viii) In genetic engineering,
(a) what is the name of the circular DNA molecule of bacteria in which the foreign DNA fragment is inserted ?
(b) which enzyme acts on DNA molecule ? (2)

(ix) Name the category of microbes that reason the subsequent diseases : (2)
(a) Cholera
(b) Malaria
(c) Rabies
(d) Ringworm

(x) In the Iron age, medicine developed as a science in India and Greece, but reasons for development were various. Mention 1 cause every for development of medicine in these 2 countries. (2)

part B

ans any 8 ques.. every ques. carries 5 marks. ans every ques. within 100 words.

B1. Name any 2 sources from where mercury reaches water bodies and pollutes it. From water how does it reach the humans and what harm does it reason to them ? (1+2+2=5)

B2. discuss the 'Big Bang' theory of origin of the Universe. provide 1 evidence in favour of this theory. (3+2=5)

B3. explain the factor which contributed to wards Europe being the centre for the development of science before the industrial revolution. (5)

B4. Write about the disease AIDS, mentioning the causal organism, mode of transmission, symptoms and detection. (5)

B5. explain 2 ways by which biotechnology has been successfully applied in the filed of agriculture. (2.5+2.5=5)

B6. What is a balanced diet ? Design an Indian meal containing items of food that give protein, carbohydrates, vitamin A and calcium.Nametwo diseases which occur due to protein malnutrition. (1+3+1=5)

B7. describe ergonomics. With the help of 2 suitable examples prove that this branch of science is important to improve the work efficiency in humans. (1+2+2=5)

B8. In what ways have the developments in the fields of transport and communication affected the life-style of the people? (2.5+2.5=5)

B9. With the help of 1 example every from human body and a machine, discuss how the system of info and control maintains the stability. (2.5+2.5=5)

B10. How do white blood cells wage a battle against germs and toxins entering our body ? (5)

B11. With the help of suitable examples, differentiate ranging from laws and theories in Science. (2.5+2.5=5)

part C

ans any 3 questions, every ques. carries ten marks. ans every ques. within 250 words.

C1. (a) Differentiate ranging from renewable and non renewable resources.
(b) How can remote sensing method be applied to explore the resources on our planet ? (2+8=10)

C2. describe mass communication. Mention the different media used for mass communication in our country, and explain the relevance of any 1 of them in modern times. (2+4+4=10)

C3. explain how progress in Science and in Society influence every other. (10)

C4. How are nutrients replenished in an ecosystem ? define carbon cycle to support your ans. (3+7=10)

C5. (a) State 2 evolutionary features in which humans differ from apes.
(b) Name the stages of human evolution in an evolutionary sequence.
(c) Mention 3 features in which modern day humans differ from their hominid ancestors. (2+5+3=10)

Earning:   Approval pending.