NEET UG Botany MCQ-109

Question No:1

(A) : Trichloroacetic acid is used to isolate organic compounds.
(R) : Acid soluble fraction is the source for many organic compounds.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:2

(A) : Amino acids exist in zwitter ion form in asolution.
(R) : Zwitter ion contains both +ve and -vecharges, and net charge is zero. Therefore solubility is least at isoelectric point.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:3

(A) :Glycine is the simplest and opticallyinactive aminoacid.
(R) :In glycine “R”group is replaced by Hatom, therefore ? carbon atom becomes symmetric.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:4

(A) : The most abundant protein in human body is collagen.
(R) : Collagen shows three polypeptide chains in coiled form.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:5

(A) : Complexity of protein molecule increases from primary structure to quaternary structure.
(R) : In quaternary structure two or more polypeptide chains are linked by different types of bonds.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:6

(A) :Haemoglobin molecule shows quaternary structure.
(R) : It consists of 4 polypeptide chains i.e. 2 ? and 2? chains.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:7

(A) :Nucleic acids show secondary structure.
(R) :Watson and Crick model of DNA is an example for secondary structure.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:8

(A) :Sucrose is a reducing sugar.
(R) :All disaccharides are reducing sugars.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:9

(A) : Polysaccharides are macromolecules.
(R) : They are formed from monosaccharide units.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:10

(A) :The walls of corkcells contain cutin.
(R) : Cork cells are permeable.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:11

(A) :Unsaturated fattyacids increase blood pressure
(R) : Hydrogenation converts saturated fatty acids into unsaturated fatty acids.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:12

(A) : Saff flower and sunflower oils are polyunsaturates.
(R) : Persons sufferings from hypertension are prescribed to use safflower and sunflower oils.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:13

Match the following
Protein
A) Trypsin
B) Glut – 4
C) Collagen
D) Insulin
Function

I) Inter cellular ground substance
II) Hormone
III) Biocatalyst
IV) Glucose transport into cells
A B C D

(A) III I IV II
(B) III IV I II
(C) III IV II I
(D) IV III II I

Question No:14

Match the items in column-I with items in column -II and choose the correct option
Column -1 —-Column – II
A)Triglyceride 1) Animal hormones
B) Membrane lipid 2) Feathers and leaves
C) Steroid 3) Phospholipids
D)Wax 4) Fat stored in the form of lipids
A B C D

(A) 4 3 1 2
(B) 2 3 4 1
(C) 3 4 1 2
(D) 4 3 2 1

Question No:15

Match the column I with column II and select the correct option.
Column -I
A)Triglycerides
B) Lactose
QRNA
D) ?-Pleated
E) Bee wax
Column – II

1)Galactose
2) Glycerol
3) Palmitic acid
4) Uracil
5) Secondry structure

A B C D E

(A) 4 1 5 23
(B) 5 1 4 2 3
(C) 3 1 4 5 2
(D) 2 1 4 53

Question No:16

Column I—– Column II
A) Monosaccharides
B) Oligosaccharides
C) Polysaccharides

e) Fructose
f) Gluconic acid
g) pectin
h) Lactose

(A) A = e, B = h, C = g
(B) A = f, B = g, C = h
(C) A = e, B = f, C = g
(D) A = g, B = e, C = h

Question No:17

Column-I

A)Tetroses
B) Hexoses
C) Pentoses
D) Heptoses
Column-II

C7H1407
f) C4<.sub>H8O4
g) C6H12O6
h) C5H10O5

i)C3H603

(A) A = e, B = f, C = g, D = h
(B) A = h, B = i, C = e, D = g
(C) A = i, B = h, C = g, D = f
(D) A = f, B = g, C = h, D = i

Question No:18

Column-I

A) DNA
B) RNA
C) tRNA
Column-II

e) Pyridoxine
f) Clover leaf model
g) Duplex model
h) Ribosomes

(A) A = e, B = f, C = g
(B) A = h, B = g, C = f
(C) A = f, B = h, C = e
(D) A = g, B = h, C = f

Question No:19

Triplet codons—– Amino acids
A) UUU—p) Alanine
B) CCC—- q) Glycine
C) AAA— r) Lysine
D) GGG— s) Proline

t) Phenyl alanine

(A) A = s, B = t, C = q, D=r
(B) A = t, B = s, C = r, D=q
(C) A = p, B = r, C = s, D=t
(D) A = q, B = r, C = s, D=t

Question No:20

Which of the following is translated completely?
1) AUG, UGA, UUA, CCC, UGA
2) AUG, AUA, UUG, CCC, UGA
3) AGU, UCC, UGA, CUC, UAA
4) AUG, UAC, AGU, AAC, UAG

(A) 1 and 2
(B) 2 and 4
(C) 1 and 4
(D) 2 and 3