Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
41.4k views
in Chemistry by (69.0k points)

Define the following terms as related to proteins:

(i) Peptide linkage

(ii) Primary structure

(iii) Denaturation

1 Answer

+1 vote
by (74.3k points)
selected by
 
Best answer

(i) A peptide linkage is an amide (—CO— NH —) linkage formed between —COOH group of one aamino acid and —NH2 group of other a-amino acid by loss of a water molecule. 

(ii) The specific sequence in which various a-amino acids present in a protein are linked to one another is called its primary structure. Any change in its primary structure creates a new protein. 

(iii) Denaturation of Proteins: When a protein in its native form is subjected to a change, such as change in temperature or change in pH, the hydrogen bonds are disturbed. Due to this, globules unfold and helix get uncoiled and protein loses its biological activity. This is called denaturation of protein. During denaturation, 2° and 3° structures are destroyed but 1° structures remain intact, e.g., coagulation of egg while on boiling, curdling of milk, etc.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...