Quote:
Originally Posted by Asif Yousufzai
PART II
Q2: Write briefly about two or more major achievements of each of the following two famous Muslim scientists:-
a) Abu Abdullah Mohammad Bin Musa Al Khwarizmi (05)
b) Abu Ali Al Hassan Ibn Al Hassan Al Haytham (05)
Q3:
a) List four or more physical characteristics of the Earth. (05)
(b) Briefly explain how seasons and ocean tides are produced on the Earth? (05)
Q4:
(a) Very briefly explain the difference between Earthquakes, volcanic eruptions, floods and tsunamis. (05)
(b) Briefly explain the difference between Sedimentary and Metamorphic rocks. (05)
Q5:
(a) Very briefly explain the difference between an Insulator, a Conductor, a Semiconductor and a Superconductor. (05)
(b) Briefly explain the difference between a LASER and a Photovoltaic Cell. (05)
Q6:
(a) Briefly explain the difference between an Antibiotic, an Antiviral Drug, a Pesticide and a Vaccine. (05)
(b) List any two of the three things that the MMR vaccine protects against. List any two other vaccines given to children. (05)
Q7:
(a) Briefly explain how Photosynthesis works? (05)
(b) Briefly explain the Nitrogen Cycle in nature. (05)
Q8: (a) Differentiate between the following: (05)- DNA
- mRNA (Messenger RNA)
- Proteins
(b) Explain how DNA, m RNA and Proteins are interrelated to each other? (05)
Q9
a) Explain what is mean by a Balanced Diet? (05)
b) Give the major function of the following micronutrients:
Vitamin A, Vitamin C, Iron, Calcium and Iodine. (05)
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If any of you want to contribute in this pretigious thread ,then do share mcqz how much u have memorized please. I am going to solve this paper in pointed form.thanx.
Balence diet:
The diet contained all essential nutrient that needed not only for metabolic activity but for the functioning and co ordination in the body.These are divied into Macro and Micro nutrients.
iodine.
1.thyroxine harmone production.
2.prevent from goiter.
2.calcium
1.prevent heart attacks ,used for cardiovascular system regulation.
2.necessary for Muscle action . Ca ions work with sodium ions in muscle movement.
3.IRÖN.
Heme group compounded with iron in blood. So plays vital role in respiration phenomena.
2.Builds immune power in body.
vitamin C
Vitamin c is also found in citric fruits. All vitamins enhance other nutrient efficiency.work for nervous system . These help in growth. Often it is used in medicine form like sendose, herci and kind.it prevent from scurvy .it is a skin disease.
Vitamin A . Lack cause
1. Night blindness
2. Sleeplessness
8. (b)
DNA,RNA AND PROTIEN
1.sugar ribose
2. All work in cellular activities.
3.All are inherited.
4. All works in co ordination. Mean
1.DNA CODE
2.RNA encode
3.encoded info in ribosome form protein .that express parental qualities.
1.DNA HAS deoxy -ribose ,where as RNA has ribose sugar. Dun nt abw protien sugar .(kind)
3.DNA code genitic info
RNA encode
Protein is expression
Baqe phr kabe ..