A non-membrane bound organelle found exclusively in animal cells is:
1. Sphaerosome
2. Glyoxisome
3. Peroxisome
4. Centriole
Select the correct statement :
1. | Centrioles form the basal body of cilia and flagella |
2. | Secondary constrictions on the chromosomes do not have a constant location |
3. | Microbodies are present in plant cells only |
4. | Nucleoli are less in number in cells undergoing protein synthesis |
The central part of the centriole is proteinaceous and is known as
1. Spokes
2. Doublet
3. Hub
4. Linkers
Which of the following is true about centrosome
1. | membraneless organelle |
2. | contains two centrioles |
3. | surrounded by amorphous pericentriolar |
4. | All of these |
The arrangement of peripheral microtubule in centrioles is
(1)9 as triplets
(2)9 as doublets
(3)9 as singlet
(4)Both A and B
Which of the following is true about centrioles?
1. | It lacks microtubule in the centre |
2. | Hub is proteinaceous |
3. | It forms the body of cilia or flagella and spindle fibres |
4. | All of the above |
The central part of proximal region of centriole is called hub which is made of
1. Protein
2. Lipoprotein
3. Phospholipid
4. Oligosaccharide
Animal cells differ from plant cell in possessing:
1. Vacuoles
2. Centrosomes
3. Plastids
4. Mitochondria
A membraneless cell organelle that is not found in higher plants is/has
1. | 9+2 arrangement of microtubules. |
2. | a role in formation of flagella in prokaryotes. |
3. | composed of rRNA and proteins. |
4. | involved in the formation of spindle fibers during cell division in animals. |
A non-membrane bound organelle found in animal cells that helps in cell division would be:
1. | Centromere | 2. | Centrosome |
3. | Basal body | 4. | Fimbriae |
Which of the following is absent in almost all plant cells?
1. | Plastid | 2. | Cell wall |
3. | A large central vacuole | 4. | Centriole |
Mitotic spindles are mainly composed of which protein?
1. | Actin | 2. | Tubulin |
3. | Actomyosin | 4. | Myoglobin |
Spindle fibers are attached to the chromosome in the region of:
1. | Centrosome | 2. | Chromomere |
3. | Chromonema | 4. | Kinetochore |
If the centromere is located close to an end of a chromosome, the chromosome is said to be:
1. Metacentric
2. Sub-metacentric
3. Acrocentric
4. Telocentric
Which of the following is essentially a modified centriole?
1. | Cilium | 2. | Flagellum |
3. | Basal body | 4. | Centromere |
Match the following
Column l | Column ll |
(a) ER | (i) Tubulin |
(b) Golgi complex | (ii) Acid phosphatase |
(c) Lysosome | (iii) Microsomes |
(d) Microtubule | (iv) Phargmosomes |
(a) | (b) | (c) | (d) | |
1. | (iii) | (iv) | (ii) | (i) |
2. | (i) | (iv) | (iii) | (ii) |
3. | (iii) | (ii) | (iv) | (i) |
4. | (iii) | (i) | (iv) | (ii) |
Which of the following statement is not related to centriole?
1. | Made up of nine evenly spaced peripheral fibrils of tubulin protein. |
2. | It gives rise to spindle fibres in plant cells. |
3. | The central part of the proximal region is called the hub. |
4. | It forms the basal body of eukaryotic flagella. |
Basal bodies are not associated with
1. animal cells
2. centrioles
3. plant cells
4. tubulin and microtubules
The microtubules are arranged in triplets in
1. the cilia
2. the flagella
3. the pseudopodia
4. the basal bodies
The mitotic spindle is composed of
1. | Actin | 2. | Tubulin |
3. | Myosin | 4. | Actinomyosin |
Mark the correct statement about centriole.
1. | Forms basal body |
2. | Found in higher plant cells |
3. | Has ‘9 + 2’ organisation of microtubules |
4. | Is surrounded by plasma membrane |
Which statement concerning living eukaryotic cells is FALSE?
1. | Membranes control which hydrophilic organic molecules pass into or out of the cell. |
2. | Lysosomes and centrioles are each bounded by a single membrane. |
3. | Membranes are usually fluid at 37/C. |
4. | Membranes contain phospholipids and proteins. |
5. | Membranes are semipermeable. |
How many peripheral microtubule triplets are found in a centriole?
1. 27
2. 9
3. 18
4. 20
Disc shaped structures found on both sides of centromere are called
1. Satellite
2. Kinetochore
3. Chromatin
4. Telomere
1. | is a non- membrane bound organelle found in all cells which helps in cell division |
2. | is a non- membrane bound organelle found in plant cells which helps in cell division |
3. | is a non- membrane bound organelle found in animal cells which helps in DNA replication |
4. | is a non- membrane bound organelle found in animal cells which helps in cell division |
1. | it usually contains two cylindrical structures called centrioles |
2. | both centrioles in centrosome are parallel to each other |
3. | in centrioles, the peripheral fibril is a triplet |
4. | the central part of the proximal region of the centriole is a proteinaceous hub |
Statement I: | It is a non-membrane bound organelle which helps in cell division |
Statement II: | It forms the basal body of cilia and flagella. |