Optical activity is shown by

Which of the following is not a macromolecule?

Which of the following represents a nucleoside?

Which among the following statements about terpenes is $NOT$ true?

Yeast cells derive their energy from glucose by

Which of the following statement$(s)$ is(are) true?
$(1)$ Oxidation of glucose with bromine water gives gluconic acid.
$(2)$ The two six-membered cyclic hemiacetal forms of $D-(+)-$glucose are called anomers.
$(3)$ Hydrolysis of sucrose gives dextrorotatory glucose and laevorotatory fructose.
$(4)$ Monosaccharides cannot be hydrolysed to give polyhydroxy aldehydes and ketones.