Problem 35 - Objective Biology for NEET

Question

How many amino-acids are used to form protein? (a) 18 (b) 20 (c) 21 (d) 22

Step-by-Step Solution

Answer

(b) 20

Step 1: Answer Identification

Recall from biological studies or textbooks that the number of amino acids used to form proteins is 20.

Step 2: Answer Verification

Check the provided options and identify the correct answer which is 20.

Key Concepts

Proteins

Proteins are essential macromolecules in all living organisms. They're often referred to as the building blocks of life. Proteins play critical roles, including acting as enzymes, hormones, and structural components. The formation of proteins involves the linking of amino acids, which are organic molecules characterized by an amine group, a carboxyl group, and a side chain specific to each amino acid. The peptide bonds form between these amino acids, creating long chains which then fold into specific shapes to become functional proteins. The diversity and function of a protein are determined by the sequence of amino acids in its chain. This sequence provides instructions for the protein's shape and function, a concept known as the protein's primary structure, which directly influences how the protein will perform within a biological system.

Biology studies

Biology studies encompass a vast spectrum of topics related to living organisms, from their molecular composition to their ecological interactions. A central focus within biology is understanding how proteins are synthesized and function, as they are crucial to cellular processes. Students of biology learn about processes such as protein synthesis, starting in the nucleus with transcription, followed by translation in the ribosomes where amino acids are assembled into proteins. The study of biological macromolecules, especially proteins, builds a foundation that explains diverse phenomena like metabolism, genetic inheritance, and immune responses. A solid grasp of these principles is fundamental for comprehending more complex biological interactions and conducting biological research.

NEET exam preparation

When preparing for the NEET exam, having a clear understanding of proteins and amino acids is vital. The National Eligibility cum Entrance Test (NEET) requires students to demonstrate comprehensive knowledge in areas such as biology, chemistry, and physics. Topics relating to proteins can often appear in both the biology and chemistry sections of the exam. It's important to understand key facts such as:

• There are 20 standard amino acids used in the synthesis of proteins.
• Each amino acid has its unique side chain, which influences the protein's overall structure and function.
• Proteins are assembled through a process called translation.

Breaking down complex topics into simple points can aid memorization and understanding. Consistent revision and practice with sample questions will help solidify these concepts, ensuring readiness for the exam's challenging questions.