Explain the difference between primary and secondary cells?

Answer 1

The difference between primary and secondary cells is that pimary cells can only be used once because the chemical reactions that supply the electrical current are irreversible whilst secondary cells can be used, charged and reused.In these batteries the chemical reactions that supply current are readily reversed so that the battery is charged.
A primary cell cannot be recharged, whereas a secondary cell can be recharged. So an ordinary flashlight battery is an example of a primary-cell battery, whereas a car battery is an example of a secondary-cell battery.

Answer 2

The primary cell wall is generally a thin, flexible and extensible layer formed while the cell is growing, while the secondary cell wall is a thick layer formed inside the primary cell wall after the cell is fully grown.

Answer 3

The difference between primary and secondary cells is that pimary cells can only be used once because the chemical reactions that supply the electrical current are irreversible whilst secondary cells can be used, charged and reused.In these batteries the chemical reactions that supply current are readily reversed so that the battery is charged.

Answer 4

o Primary-is the sequence of amino acids that make up a polypeptide chain. 20 different amino acids are found in proteins. The exact order of the amino acids in a specific protein is the primary sequence for that protein. o Secondary- refers to regular, repeated patterns of folding of the protein backbone. The two most common folding patterns are the alpha helix and the beta sheet o Tertiary - refers to the overall folding of the entire polypeptide chain into a specific 3D shape. o Quaternary-describes the way in which the different subunits are packed together to form the overall structure of the protein. For example, the human hemoglobin molecule shown below is made of four subunits. o Primary-is the sequence of amino acids that make up a polypeptide chain. 20 different amino acids are found in proteins. The exact order of the amino acids in a specific protein is the primary sequence for that protein. o Secondary- refers to regular, repeated patterns of folding of the protein backbone. The two most common folding patterns are the alpha helix and the beta sheet o Tertiary - refers to the overall folding of the entire polypeptide chain into a specific 3D shape. o Quaternary-describes the way in which the different subunits are packed together to form the overall structure of the protein. For example, the human hemoglobin molecule shown below is made of four subunits.

Answer 5

Cells that are cultured directly from a subject are primary cells. and primary cell culture can be passaged to form secondary cell culture.

Answer 6

The outer most layer of the plant cell is known as primary cell wall and cellulose is the most important component in it.