Categories: NEET Course
Q.1. For the study of structure of nucleus, the best cell is
(A) cell in the interphase
(B) cell in the late prophase
(C) cell in the divisional phase
(D) cell in the meiotic phase
Answer: (A) cell in the interphase
Q.2. The cells that lack nucleus are
(A) erythrocytes of many mammals
(B) tube cells of vascular plants
(C) lymphocytes of mammals
(D) both (A) and (B)
Answer: (D) both (A) and (B)
Q.3. Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of
(A) protein synthesis
(B) mRNA
(C) rRNA
(D) tRNA
Answer: (C) rRNA
Q.4. Choose the incorrect pair.
(A) Histones – Basic proteins
(B) Centromere – Primary constriction
(C) Kinetochore – Disc-shaped structure
(D) None of the above
Answer: (D) None of the above
Q.5. The shorter and longer arms of a submetacentric chromosome are referred to as
(A) p-arm and q-arm, respectively
(B) q-arm and p-arm, respectively
(C) m-arm and n-arm, respectively
(D) s-arm and l-arm, respectively
Answer: (A) p-arm and q-arm, respectively
Q.6. Which one is only found in plant?
(A) Ribosome
(B) Mitochondria
(C) Glyoxysomes
(D) Lysosome
Answer: (C) Glyoxysomes
Q.7. Which of the following is incorrect about the microbodies?
(A) These are present in bacterial
(B) Minute membranous vesicles
(C) These are present in plants and animals
(D) These have various enzymes
Answer: (A) These are present in bacterial
Q.8. Which of the following is true for nucleolus?
(A) It takes part in spindle formation
(B) It takes part in spindle formation
(C) Larger nucleoli are present in dividing cells
(D) It is the site for active ribosomal RNA synthesis
Answer: (D) It is the site for active ribosomal RNA synthesis
Q.9. Match the following columns:
|
|
Column I |
|
Column II |
|
A |
Golgi apparatus |
1 |
Synthesis of protein |
|
B |
Lysosomes |
2 |
Trap waste and excretory products |
|
C |
Vacuoles |
3 |
Formation of glycoproteins and glycolipids |
|
D |
Ribosomes |
4 |
Digesting biomolecules |
Codes:
A B C D
(A) 3 4 2 1
(B) 4 3 1 2
(C) 3 2 4 1
(D) 1 2 4 3
Answer: (A) 3 4 2 1
Q.10. According to most recent studies, each chromosome consists of
(A) Single double helical DNA which is highly coiled and folded
(B) Variable number of DNA helices, depending upon the length of chromosome
(C) Many small DNA helices, which are joined by peptide linkages
(D) Small DNA helices, wrapped around each other like a rope.
Answer: (A) Single double helical DNA which is highly coiled and folded
Q.11. The chromosome in which centromere lies slightly away from the middle of the chromosome resulting into one shorter arm and one longer arm, is called as
(A) metacentric
(B) submetacentric
(C) acrocentric
(D) telocentric
Answer: (B) submetacentric