A chromophore is a molecule normally negative in charge tha

________ A chromophore is a molecule, normally negative in charge, that is part of a stain and gives the stain its color; chromophores form covalent bonds with the positive charges on the surface of a bacterium _______ Resolution improves when immersion oil is used; immersion oil has the same reflective index as glass.

Solution

Statement 1:

A Chromophore is a molecule, normally negative in charge, that is part of a stain and gives the stain its color; chromophores form covalent bonds with positive charges on the surface of the bacterium.

The statement is FALSE:

The correct statement will be

A Chromophore is a molecule, normally positive in charge that is part of the stain and gives the stain its color; Chromophores form ionic bonds with negative charges on the surface of the bacterium

Corrections made are explained below

Statement 2:

Resolution improves when an immersion oil is used; immersion oil has the same reflective index as glass

The statement is FALSE

The corrected statement is

Resolution improves when immersion oil is used; immersion oil has the same refractive index as glass.

Correction made is explained below:

Most of the statement is True, except the word reflective index has to be replaced by refractive index. The process which happens when light travels from one medium to other (e.g. from air to glass) is called refraction i.e. a change in the path of light. Reflection on the other hand refers to bouncing back of light from a surface. Oil has same refractive index as glass, there is no refraction in an oil immersion lens and this leads to improved resolution.