Cell Structure and function – Online MCQs Test – Biology MCAT

1. Which one of the following pigments does not occur in the chloroplast?

Carotene

Anthocyanin

Xanthophyll

Chlorophyll b

2. Which of the following statements is incorrect with reference to lysosomes”

They are filled acid hydrolase enzymes.

They may be autophagic.

They are monomorphic and uniform in structure and function

They can digest proteins, nuclei acids.

3. The plant cell wall is made up of cellulose. This is believed to be

An amino acid

A protein

A liquid

A polysaccharide

4. Function of centriole is

Formation of spindle fibres

Formation of nucleolus

Initiation of cell division

Formation of cell plate

5. The word cytoplasm means:

Living matter of the cell

Living gel of the cell

Living fluid of the cell

Living substance of the cell

6. The function of nucleolus is to store

t-RNI

DNA

m-RNA

r-RNA

7. Which pair of structures are usually found in both plant and animal cells?

Nucleolus and chloroplast

Nucleus and cell wall

Cell membrane and nucleolus

Cell membrane and cell wall

8. When the region of endoplasmic reticulum are studded by ribosome on their outer surface of the cisternae it is called

Sarcoplasmic reticulum

Granular endoplasmic reticulum

Smooth endoplasmic reticulum

None of the above

9. Microtubules

Enable an amoeba to sand out a pseudopod

Are made of actin and help support the shape of a cell

From the cleavage furrow in a dividing cell

Are hollow tubes that make up cilia and flagella

10. Membrane protein

Does all the above works

Helps in cell recognizing

Works as recipient for transportation

Works as recipient for informal molecules

11. L-shaped chromosomes are called

Telocentric

Acrocentric

Sex chromosomes

Sub-metacentric

12. Polyribosomes are aggregation of

Ribosomes and rRNA

Peroxisome

Only rRNA

Several ribosomes held together by a string of mRNA

13. Which of the following is not the function of lysosomes?

Degeneration of cells

Pnagocytosis

Autophag

Endocytosis

14. In which part of mitochondria ATP generated’?

Cristae

Matrix

Outer membrane

F1 particles

15. The division of the plant kingdom into Prokaryota and Eukaryota is based on the characters of

Cell organelies only

Nucleus only

Chromosomes only

All of these

16. Which of the following involves growing living cells?

Freeze fracture

Freeze-etching

Tissue culture

Cell fractionation

17. Which of the following layer is present nearest to plasma membrane in a plant cell?

Secondary wall

Primary wall

Tonoplast

Middle lamella

18. Biological membranes are composed of

70% proteins and 30% lipids

40% proteins and 60% lipids

600/o proteins and 40% lipids

50% proteins and 50% lipids

19. Lysosomes are known as suicidal bags because of

Hydrolytic enzymes

Parasitic on nucleus

Proteolytic enzymes

Catalytic enzymes

20. A chromosome in which the centromere is situated near one end is known as

Telocentric

Metacentric

Sub-metacentric

Acrocentric

Cell Structure and function-Medical College Admission Test Preparation Notes