Answer:
To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating. ... DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases.
Explanation:
Automatic Nervous system
In human, the automatic nervous system is part of the peripheral
nervous system and it consists of the sympathetic division and the parasympathetic
division. Automatic nervous system is regulated by hypothalamus which
controls our internal organs and glands such as blood pressure, breathing, pulses
and arousal in response to emotional circumstances.
57. Answer is d. less concentrated since water passes from B to A.
Osmosis is the movement of water molecules from a region of higher water concentration to a region of lower water concentration. So water will move from B to A, making it less concentrated solution.
An important part to notice here is that its the movement of water molecules (or any other solvent) through the membrane and not the particles dissolved in the water.
58. Answer is a. It will rise in side A since water (not the substance in it) will tend to pass from the area of greater concentration to the area of lesser concentration.
