NCERT Notes

You can use the position vector to find the real displacement of a point from a reference point.

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.

Enzymes found in human bodies are 

• Lipases: They remove the fats in the gut.

• Amylase: It is present in the saliva. The role of amylase is to break down carbohydrates.

• Maltase: These enzymes are found in the small intestine. It breaks down the sugar maltose into glucose. 

• Trypsin: These enzymes are present in the small intestine. The function of trypsin is to break proteins into amino acids.

• Lactase: The function of lactase is to break down lactose into simpler sugars (glucose and galactose). Lactose is the sugar that is found in dairy products.

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.

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.