Question

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Name the constituents of a cell .
Define voltmeter.
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Answer 1

Answer:

(1) All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.

(2) An instrument for measuring electric potential in volts.

Answer 2

Answer:

Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules. Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass. Consequently, the interactions between water and the other constituents of cells are of central importance in biological chemistry

voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. It is connected in parallel. It usually has a high resistance so that it takes negligible current from the circuit.