Cell Structure and function – Online MCQs Test – Biology MCAT

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

Carotene

Chlorophyll b

Xanthophyll

Anthocyanin

2. Glyoxysomes occur in

Both plant and animal cells

Plant cell only

All types of cells

Animal cells only

3. The non-membranous organelles are

Centriole

All of the above

Ribosomes

Nucleolus

4. Biological membranes are composed of

40% proteins and 60% lipids

70% proteins and 30% lipids

600/o proteins and 40% lipids

50% proteins and 50% lipids

5. Membrane protein

Works as recipient for informal molecules

Does all the above works

Works as recipient for transportation

Helps in cell recognizing

6. Fusiform muscle cells are found in:

Smooth muscles

Cardiac muscles

Striated muscles

Skeletal muscles

7. F1 particles / oxysome / elementary particles are present in

Golgi complex

Chloroplast

Mitochondria

Endoclasmic reticulum

8. Which process requires energy?

Facilitated diffusion of calcium through a channel

Passive diffusion

A contractile vacuole removing water from an amoeba

Water flowing into a paramecium in a lake

9. DNA is present in

Ribosomes

Lysosome

E.R

Mitochondria and chloroplast

10. Resolution means:

How much light an eye or microscope

How much its two points are apart

How much size of an object have

How much an object become larger with microscope

11. DNA is mainly found in

Nucleus only

All of these

Cytoplasm only

Nucleus and cytoplasm

12. Which of the following does not require earner molecules during transport through cell membranes?

Simple diffusion

Active transport of sugars and amino acids

Facilitated diffusion

Na+ -K+ transport

13. The principal protein of cilia and flagella is

Tubulin

Albumin

Gliadin

Globulin

14. The main difference between the living and non-living is

In the size

In the movement

In the presence of protoplasm

In the growth

15. Which of the following is responsible for mechanical support, enzyme transport and protein synthesis ?

Mitochondria

Dictyosomes

Cell membrane

Endoplasmic reticulum

16. Plastids may be defined as:

Double membrane bound organelles

Double membrane bound organelles with granum and pigments

Double membrane bound organelles with pigments

Double membrane bound organelles with many enzymes

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

None of the above.

It allows every molecule to pass through

It never allows any molecule to pass through

It allows some molecules to pass through

18. The smallest cellular organisms are:

Protists

Bacteria

Viruses

Protozoans

19. The main difference between pinocytosis and phagocytosis is

Taking in of fluid substances and engulfing of food material and foreign bodies

Taking in of small amount of liquid and large volume of liquids

None of the above

Taking in of small and large particles respectively

20. All of the following are correct mitochondria EXCEPT

They can self-replicate

They contain their own DNA

They are the site of photosynthesis

They are the site of cellular respiration

Cell Structure and function-Medical College Admission Test Preparation Notes