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What is osmotic pressure and how can it be calculated? With the help of an example explain the process of active transport by ion gradients. Name the types of enzymes and discuss the genetic control o
Write the important points about energy flow in an ecosystem. Describe the ecological effects of overgrazing and deforestation.
Explain the experiment of Avery, McLeod and McCarty. Why is it considered important in the field of Genetics? Write the genotypes and the phenotypes of the persons with Klinefelter Syndrome and Down S
Name the technique used for: Observation of DNA regions in chloroplast, Regeneration of plants from excised tissues of mature plants and Analysis of DNA structure.
Explain water potential? Describe the effect of solute, pressure and matric pressure on water potential.Explain the mechanism of control of stomata with suitable diagram.
Differentiate between simple and multiple polyembryony. ‘The phenomenon of embryogenesis is not necessarily confined to the reproductive cycle’. Justify the statement.
Compare between Homo habilis and Homo erectus. Discuss the evolution of culture in human beings. Describe how competition between two species leads to character displacement and ecological exclusion
What are coral reefs? Discuss their types and formation.Describe the different types of mouthparts found in insects with the help of well labeled diagrams.
Describe the phenomenon of ‘evolution of behaviour’. Describe territorial behaviour and dominance hierarchy. How are these behaviour helpful in organizing vertebrate social organizations?
Compare the families Arecaceae & Liliaceae with the reference to the following features: Leaf, inflorescence, flowers, androecium, gynoecium.
Discuss the salient lines of evolution of sporophytes in bryophytes. Cite examples and make their illustrations to support your discussion.
A stone is dropped from the top of a 95.0 m building. The second stone is dropped 0.75 s later. How far from the ground is this second stone when the first stone hits the ground?
A car accelerates uniformly from rest to a velocity of 101 km/h east in 8.0 s. What is the magnitude of its acceleration?
You jog once around an oval track in 6.0 minutes at an average speed of 1.7 mIs. a) Determine the distance travelled? b) Determine the displacement?
A small child throws a rock vertically downward with an initial velocity of 6.0 m/s from the top of a 225 m building. How far does the rock travel in the first 6.0 seconds of its drop?
A car is traveling at a velocity of 82 km/h 32° N of W. a) Determine the west component of the velocity? b) Determine the south component of the velocity?
A small plane makes a complete circle with a radius of 3282 m in 2.0 min. Determine the centripetal acceleration of the plane?
A curve of radius 120 m is banked at an angle of 18°. At what speed can it be negotiated beneath icy conditions where friction is negligible?
If the speed is doubled, does the centripetal force double? If not by what factor does the centripetal force raise? Why?
An asteroid consists of an orbital radius of 4.8 x 1011 m and a mass of 1.4 x 1018 kg. Find out its period of rotation around the sun?
Jupiter is 7.78 x 1011 m from the sun and has a mass of 1.90 x 1027 kg. Determine the force of gravity due to the sun acting on Jupiter?
Compute the Kepler’s constant for objects rotating around the sun given that the earth has a period of revolution around the sun of 3.16 x 107 s and an orbital radius of 1.49 x 1011 m.
A car travels around a curved path that consists of a radius of 225 m at a constant speed of 26.0 m/s. Determine the centripetal acceleration of the car?
Joe wishes to hang a sign weighing 750 N so that cable A joined to the store makes a 30° angle as shown by θ in the figure. Cable B is attached to an adjoining building. Compute the tensio
A crazed 4-year old on a tricycle is chasing Jordan. When the child hits Jordan his acceleration is 1.5m/s2 and his mass is 32 kg. What is the force applied on Jordan by the angry 4-year old?