Set-2 Flashcards
Which triplet in DNA codes for valine ?
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A. CTT B. AGU C. CAT D. AAT E. None of these
E. None of these
The triplet in DNA that codes for valine is GTT, GTC, GTA, or GTG.
A triplet is a sequence of three nucleotides in DNA or RNA that codes for a specific amino acid. There are 64 possible triplets, but only 20 amino acids. This means that some amino acids are coded for by more than one triplet. Valine is one of the amino acids that is coded for by four different triplets.
The other triplets listed do not code for valine. CTT codes for leucine, AGU codes for serine, CAT codes for histidine, and AAT codes for asparagine.
What is the chance of diabetic baby born to parents both heterogeneous normal ?
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A. Zero B. ¼ C. ½ D. ¾ E. None of these
B. ¼
Which of the following is not a part of Darwinism?
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A. Over production B. Natural selection C. Inheritance for acquired characters D. Competition for survival E. None of these
A. Over production
Role of biotechnology in the production of food based on ___________?
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A. Decomposition B. Respiration C. Digestion D. Fermentation E. None of these
D. Fermentation
Which form of drug abuse involves most risk of infection with the HIV (AIDS) virus ?
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A. Cigarette smoking B. Using alcholo C. Injection of heroine D. Taking too much aspirin E. None of these
C. Injection of heroine
Founder of modern astronomy was _________________?
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A. Archimedes B. William Gilbert C. Nicolas Copernicus D. Michael Faraday E. None of these
C. Nicolas Copernicus
The instrument which measures very high temperature is____________?
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A. Manometer
B. Thermostat
C. Chronometer
D. Pyrometer
D. Pyrometer
The science which deals with study of manners and customs of people is ?
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A. Ethnology B. Morphology C. Ethics D. Genetics E. None of these
A. Ethnology
Chemical used to kill rats and mice are ?
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A. Insecticides B. Rodenticides C. Fungicides D. Herbicides E. None of these
B. Rodenticides
Dry ice is ___________?
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A. Methane hydrate B. Liquid Nitrogen C. Solid Carbon dioxide D. Frozen Water E. None of these
C. Solid Carbon dioxide
Chemical name of vinegar is _____________?
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A. Sodium Nitrate
B. Dilute acetic acid
C. Chloride of lime
D. Calcium
B. Dilute acetic acid
Defeciency of following vitamin decreases hemoglobin production ?
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A. Biotin B. Thiamine C. Niacin D. Pyridoxine E. None of these
D. Pyridoxine
Hygrometer is used for measuring the ____________?
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A. Speed of sound B. Density of milk C. Humidity of air D. Specific gravity of liquids E. None of these
C. Humidity of air
A hygrometer is an instrument used to measure the humidity of air. Humidity is the amount of water vapor in the air. It is measured as a percentage of the maximum amount of water vapor that the air can hold at a given temperature.
Bronze is an alloy of ____________?
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A. Copper and Zinc B. Tin and Zinc C. Copper and Tin D. Iron and Zinc E. None of these
C. Copper and Tin
Which of the following is most elastic ?
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A. Steel B. Rubber C. Glass D. Sponge E. None of these
A. Steel
Orbital period of the planet Mercury around the sun is _____________?
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A. 88 days B. 365 days C. 2 years D. 98 days E. None of these
A. 88 days
The most splendid and the most magnificent constellation on the sky is?
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A. Orion B. Columbia C. Canis Major D. Taurus E. None of these
A. Orion
Eugenics is the study of___________________?
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A. Altering human beings by changing their genetic components B. People of European region C. Different races of mankind D. Genetic of plants E. None of these
A. Altering human beings by changing their genetic components
The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called ___________?
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A. Aphelion B. Perihelion C. Perigee D. Apogee E. None of these
A. Aphelion
Aphelion is the point in the Earth’s orbit when it is farthest from the Sun. This occurs around July 4th each year. At aphelion, the Earth is about 94.5 million miles (152.1 million km) from the Sun.
The Earth’s orbit is not a perfect circle, but rather an ellipse. This means that the Earth’s distance from the Sun varies throughout the year. The Earth is closest to the Sun at perihelion, which occurs around January 3rd each year. At perihelion, the Earth is about 91.4 million miles (147.1 million km) from the Sun.
Diamond is a very expensive ornament. It is composed of a single element ___________?
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A. Carbon B. Gold C. Silver D. Platinum E. None of these
A. Carbon
Which of the following layers make radio transmission possible?
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A. Troposphere B. Ionosphere C. Mesosphere D. Stratosphere E. None of these
B. Ionosphere
The ionosphere is a region of the Earth’s atmosphere that is ionized by solar and cosmic radiation. This means that the atoms and molecules in the ionosphere have lost one or more electrons, giving them a positive charge. The ionosphere is located between 50 and 1,000 kilometers above the Earth’s surface.
The ionosphere is important for radio transmission because it reflects radio waves back to Earth. This allows radio waves to travel long distances around the Earth. Without the ionosphere, radio waves would travel in a straight line and would not be able to reach distant locations.
Which of the following explains the reason why there is no total eclipse of the sun?
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A. Size of the earth in relation to that of moon
B. Orbit of moon around earth
C. Direction of rotation of earth around sun
D. Area of the sun covered by the moon
E. None of these
D. Area of the sun covered by the moon
Television signals are converted into light signals by___________?
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A. Optical fiber B. Transistor C. Decoder D. Photo diode E. None of these
D. Photo diode
Where do most of Asteroids lie?
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A. In asteroid belt between the orbits of Mars and Jupiter
B. In asteroid belt between the orbits of Mars and Venus
C. In asteroid belt between the orbits of Jupiter and Venus
D. Everywhere in the sky
E. None of these
A. In asteroid belt between the orbits of Mars and Jupiter