Nucleotides are organic molecules consisting of a nucleoside and a phosphate.
They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth. Nucleotides are obtained in the diet and are also synthesized from common nutrients by the liver.
Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine.
Nucleotides also play a central role in metabolism at a fundamental, cellular level. They provide chemical energy—in the form of the nucleoside triphosphates, adenosine triphosphate (ATP), guanosine triphosphate (GTP), cytidine triphosphate (CTP) and uridine triphosphate (UTP)—throughout the cell for the many cellular functions that demand energy, including: amino acid, protein and cell membrane synthesis, moving the cell and cell parts (both internally and intercellularly), cell division, etc.
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<u>Answer:</u> The final temperature of water is 38.5°C
<u>Explanation:</u>
To calculate the amount of heat released or absorbed, we use the equation:
where,
q = heat absorbed = 1.506 kJ = 1506 J (Conversion factor: 1 kJ = 1000 J)
m = mass of water = 30 g
c = specific heat capacity of water = 4.184 Jl/g.°C
= change in temperature = 
Putting values in above equation, we get:
Hence, the final temperature of water is 38.5°C
Answer:
Distillation
Explanation:
Water vaporizes at lower temperature than the ink pigment so if you heat them, the water evaporates, leaving the ink pigment in the flask
The answer is B- Low reactivity.
Equilibrium is where two conditions are in state of equilibrium. There is no change in the condition of a system
the equilibrium could be
a) static
b) dynamic
In case of chemical reaction we reach a dynamic equilibrium as the two side reactions are still going on however the rate of forward reaction becomes equal to rate of backward direction.
Thus it is in dynamic equilibrium
in physical changes it happen that the one phase get converted to other phase and with the same rate the second phase is being converted to firs phase
thus answer is
chemical and physical changes
