NCERT

Two vectors which are parallel to each other, irrespective of direction, are called parallel vectors.

Types are given below

• Collinear vectors
• Parallel vectors
• Antiparallel vectors

A vector with zero magnitude is considered a zero vector. Since it has no magnitude, its direction is considered arbitrary. This means the zero vector has no specific direction.

There are various types of enzymes, including lyases, ligases, isomerases, hydrolases, oxidoreductases, etc. To know about the types of enzymes in detail, refer to the article.

We can define enzymes as biocatalysts. It is important in biological processes like digestion, metabolism, and the synthesis of cellular components. If enzymes stop their functions, then the body can not generate enough proteins, which is important for survival. The examples of enzymes are lactase and amylase.

Biomolecules in class 12 Chemistry include the following important topics: classification and structure of carbohydrates, amino acids, and proteins, enzymes and their characteristics, nucleic acids (DNA and RNA structure and components), and vitamins.

You must also prepare the following topics that are frequently asked in exams: zwitterion structure in amino acids, enzyme action mechanisms, and differences between DNA and RNA.

Biomolecules are organic compounds essential for life; they are found in all living organisms. In chemistry class 12, we talked about the following biomolecules: carbohydrates, proteins, lipids, nucleic acids, enzymes, and vitamins. 

Biomolecules chemistry class 12 connects biology and chemistry and helps us understand metabolism, heredity, and biochemical reactions. 

Foods that contains nucleic acids are animal products such as meat, eggs, fish and few plant-based sources are legumes, spinach, mushrooms, yeast and cereals. Adding these foods in the diet will support the body's nucleic acid pool, which is important for cellular function.

DNA and RNA both are the types of nucleic acids.

• DNA (Deoxyribonucleic acid) store the genetic  information.

• RNA (Ribonucleic acid) helps in protein synthesis. It carry and translates the genetic codes.

Magnetism is the force exerted by a magnet. It comes when the magnet attracts or repulses an object. For example, a magnet sticks to certain objects because the magnetic force or magnetism pulls it.