Cell Structure and function – Online MCQs Test – Biology MCAT

1. Which of the following is the correct pair?

Aerobic respiration — cristae

DNA synthesis — Ribosomes

Suicidal — Dictyosomes

Protein synthesis — Smooth E.R

2. Polyribosomes are aggregation of

Peroxisome

Several ribosomes held together by a string of mRNA

Only rRNA

Ribosomes and rRNA

3. Extra-nuclear DNA is found in

Endoplasmic reticulum

Chloroplast

Ribosome

Golgi apparatus

4. Plasma membrane is differentially permeable or selectively permeable membrane because:

It allows every molecule to pass through

It allows some molecules to pass through

It never allows any molecule to pass through

None of the above.

5. Every living cell has a

Cell wall

Chloroplast

Food vacuole

Membrane

6. Highly Structured Protoplasm is

All of them

General substance

Living substance

Non-living substance

7. All of the following are true of the smooth endoplasmic reticulum EXCEPT

It synthesizes steroids

It connects the rough endoplasmic reticulum to the Golgi apparatus

It detoxifies the cell

It manufactures proteins

8. Function of mitochondria is

All of the these

To synthesize PGA

To release energy during respiration

To provide CoA

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

Metacentric

Sub-metacentric

Telocentric

Acrocentric

10. Fusiform muscle cells are found in:

Cardiac muscles

Skeletal muscles

Striated muscles

Smooth muscles

11. If a biochemical analysis of mitochondria is to be done, the best procedure would be

Plasmolyse the cell, filter it and take the debris

Subject the cells to cell differentiation (centrifuge) and obtain mitochondria

Select cells which have a large number of mitochondria

Grind the cell, filter out the mixture and take the debris

12. A mature plant cell has

Vacuole and cell wall

Cell wall and protoplasm

Protoplasm, cell wall and vacuole

Protoplasm and vacuole

13. The word cytoplasm means:

Living gel of the cell

Living substance of the cell

Living matter of the cell

Living fluid of the cell

14. The main organelle involved in modification and routing of newly synthesized proteins to their destinations is

Endoplasmic reticulum

Golgi Bodies

Lysosome

Chloroplast

15. High energy phosphate bond is present in

Adenosine

Cyclic AMP

AMP

ADP

16. In which part of mitochondria ATP generated’?

F1 particles

Matrix

Outer membrane

Cristae

17. Which of the following represent the correct sequence of relative sizes in descending order?

Cell nucleus, water molecule, chromosome. oxygen atom

Chromosome, cell, nucleus, water molecule, oxygen atom

Cell, nucleus, water molecule, oxygen atom, chromosome

Cell, nucleus, chromosome, water molecule, oxygen atom

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

Sarcoplasmic reticulum

None of the above

Smooth endoplasmic reticulum

Granular endoplasmic reticulum

19. Which of the following involves growing living cells?

Tissue culture

Freeze-etching

Freeze fracture

Cell fractionation

20. The storage diseases are caused by:

Storage of certain compound due to deficiency of lysosomal enzymes

Storage of certain lysosomal enzymes

Storage of lysosomes in the body

None of the above

Cell Structure and function-Medical College Admission Test Preparation Notes