RNA polymerase (green) synthesizes RNA by following a strand of DNA. RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.
The answer is the muscular system
The 75% energy which does not do any useful work gets dissipated as thermal energy in gasoline engines.
Explanation:
The efficiency of any engine like gasoline engine is the ratio of work done in contrast to heat or energy provided.
Gasoline engines are internal combustion engine. The thermal efficiency is calculated of these engines.
work done or efficiency= 
or heat absorbed is divided by heat used in doing work
the friction and in other forms heat gets lost.
In gasoline engine about 65 to 75 % heat gets emitted without any useful work done. The heat gets lost in friction, air turbulence, noise and work input to turn on the engine. After the dissipation of heat in it only 25% is used up by vehicle having gasoline engines.
Answer: b. A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.
Answer:
Cell population growth can be represented by the number <u><em>2</em></u> with an exponent, where the exponent increases by <u><em> 1</em></u> in each generation.
Explanation:
As we know, every cell doubles after the process of cell division. Hence the cell population growth is represented by the number 2. The cell population growth is also known as the doubling time of a cell. The proliferation of cells is often written as:
Nt = N0 2tf
Where,
Nt is the number of cells at a particular time t.
N0 is the initial number of cells.
f is the frequency of cell cycles