BM

Question 1

R:- A closer examination reveals that the relative abundance of carbon and hydrogen with respect to other elements is lower in any living organism than in earth’s crust.

Answer 1

R is wrong, C and H living organism may jyda hote hai

Question 2

A:- Lipids are generally water insoluble.
R:- Fatty acid has a carboxyl group attached to an R group.

Answer 2

(2)

A:- agr always hota to A glat ho jata kyuki kuch lipid water may soluble Hote hai

Question 3

A:- The E-S complex formation is a transient phenomenon (thode time ke liye).
R:- During the state where substrate is bound to the enzyme active site, a new structure of the substrate called transition state structure is formed.

Answer 3

(1)

Question 4

Statement 1st:- Amino acids have a property of ionizable nature of -NH2 and -COOH groups, hence have different structures at different pH.
Statement 2nd:- Amino acids can exist as zwitterionic from at acidic and basic pH.

कथन 1:- अमीनो एसिड में -NH2 और -COOH समूहों की आयनीकरण प्रकृति का गुण होता है, इसलिए अलग-अलग pH पर अलग-अलग संरचनाएँ होती हैं।
कथन 2:- अमीनो एसिड अम्लीय और क्षारीय pH पर ज़्विटरियोनिक रूप में मौजूद हो सकते हैं।

Answer 4

Statement 1st is correct and Statement 2nd is wrong.

At physiological pH around 7.4, mostly Amino acids from zwitter ions.

Question 5

When fatty acid is esterified with glycerol, monoglycerides are formed.
जब फैटी एसिड को ग्लिसरॉल के साथ एस्टरीकृत किया जाता है, तो मोनोग्लिसराइड्स बनते हैं।

Answer 5

It’s right

Question 6

MATCH
1. steroids (a) biocatalyst
2. Thrombin (b) hormone

Answer 6

1. (b) & 2. (a)

Question 7

Lectins:-

Answer 7

Concanavalin A

Question 8

Toxin:-

Answer 8

Abrin and ricin

Question 9

Trihydroxy propane is glycerol

Answer 9

It’s right

Question 10

MATCH
1. Aquaporine (a) Amine
2. Asparagine (b) Polysaccharide
3. Abscisic acid (c) Polypeptide
4. Chitin (d) Carotenoid

Answer 10

1.(c) 2.(a) 3.(d) 4.(b)

Question 11

Q:- Prosthetic group differ from coenzymes in that
(a) They can serve as co factors in a number of enzyme-catalyzed reactions.
(b) They require metal ion for their activity.
(c) They (Prosthetic group) are tightly bound to apoenzyme.
(d) Their association with apoenzymes is transient.

Answer 11

(c) is correct, kyuki yeh shi difference hai

(a) is right for both, that’s why not a difference.

Question 12

Ramachandran plot is used to confirm the structure of?

Answer 12

Protein

Question 13

A complete catalytic active enzyme with its bound Prosthetic group is called apoenzyme.

Answer 13

No, it’s called holoenzyme not apoenzyme

Question 14

A typical fat molecule is made up of

Answer 14

1 glycerol and 3 fatty acids