Sindh MDCAT Academy

01/09/2023

Biology mcq series

wisdomoak123:
Topic: The Cell MCQs
MCQs No.: 1

Question:
Who coined the term CELL?

A. Schwann
B. Schleiden
C. Robert Hook
D. Both a and b

MCQs No.: 2

Question:
Who opposed the idea the cell is an empty space bounded by thick wall?

A. Lorenz Oken
B. Schwann
C. Robert Brown
D. Rudolph Virchow

MCQs No.: 4

Question:
Magnifying power of electron microscope as compared to eye is

A. 500 X
B. 250000X
C. 500000X
D. 250X

MCQs No.: 3

Question:
Who first observed and thus hypothesized that new cells are formed from previously existing living cell?

A. Theodor Schwann and Schleiden
B. Rudolph Virchows
C. Louis Pasteur
D. Both b and c

MCQs No.: 5

Question:
In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon:

A. Their physical properties like size & weight.
B. Physical properties of the medium like its density.
C. Their electrical properties like their charges
D. Both a and b

MCQs No.: 6

Question:
Percentage of proteins in cell membrane is

A. 20-40%
B. 40-50%
C. 60-80%
D. 80-100%

MCQs No.: 7

Question:
Which of the statement about cell membrane is not true?

A. It contains protein molecules embedded in lipid bilayer
B. It is a differentially permeable membrane.
C. It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
D. It may get infolded to engulf solid or liquid material.

MCQs No.: 8

Question:
Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called

A. Active transport
B. Passive transport
C. Co-transport
D. Counter transport

MCQs No.: 9

Question:
The first layer of cell wall which is formed is:

A. Primary wall
B. Secondary wall
C. Middle lamella
D. All of these

MCQs No.: 10

Question:
Cellulose is the major component of

A. Primary wall
B. Secondary wall
C. Middle lamella
D. all of the above

27/08/2023

27/08/2023

🔴All MCQS Are According to STB

1)Most of the Enzymes are _______ in Nature?
A)Acedic
B)Neutral
C)Proteinaceous
D)Visible
E)Basic

2)Enzymes are Macromolecles of________?
A)Endo
B)Pepsin
C)Globular Protein
D)Protein
E)Amylase

3)Enzymes some time diffuse outside of the cell and perform ______Function?
A)Catalytic
B)Endoenzyme
C)Exoenzyme
D)Protoplasm
E)None

4)All are correct about enzymes except_______?
A)They are biocatalysts.
B)They are specific in nature. but not in action.
C)Enzymes react both acedic and alkaline substance.
D)They work on Specific pH.
E)They are heat sensitive.

5) Enzymes above and below the Temperature its rate of reaction willbe?
A)Increase
B)Constant
C)Decrease
D)Zero
E)Maximum

6)Most of enzymes are highly active at about ____?
A)35°C
B)36°C
C)37°C
D)38°C
E)39°C

7)If the Prosthetic group is an organic Molecule is called
_____?
A)Radiation
B)Activators
C)Inhibitors
D)Effect of pH
E)Co_Enzyme

8)Without Co_Enzyme ______ Enzymes are unable to Function?
A)FAD
B)NAD
C)COA
D)All
E)None

9)Substance which Increase the activity of Enzyme?
A)Radiation
B)Activators
C)Inhibitors
D)Effect of pH
E)Co_Enzyme

10)Substance which Decrease the activity of enzymes?
A)Radiation
B)Activators
C)Inhibitors
D)Effect of pH
E)Co_Enzyme

11)Action of Enzymes is related to a structure which is -------?
A)Complex
B)Three dimensional
C)Circle
D)A and B
E) A and C

12)Key Lock Theory was proposed by?
A)Fischer 1898
B)Paul Filder 1899
C)D.D Woods 1898
D)Joe Clork 1998
E)Robert Hock 1990

13)They Proposed that Particular Enzymes act on the Particular_____?
A)Substrate
B)Active Site
C)Molecules
D)Co_Enzymez
E)Protein

14)Lamarckian theory is now considered as?
A)Key Lock
B)Mode of Action
C)Inheritance of acquired Character
D)Evolution
E)Drawin theory