Mdcat Online Test #4

Welcome to MDCAT Online Test #4. This test is the 4th part of Batch-2. Every year, MDCAT.site conducts MDCAT online practice tests to ensure that aspirants are well-prepared for the exam.

This test consists of 5 subjects: Biology, Chemistry, Physics, English, and Logical Problem Solving. Each science subject has 10 MCQs, and the remaining two subjects have 5 MCQs each. The chapters are mentioned on the test page. Make sure to prepare for the MDCAT practice test before attempting it, as it will boost your confidence.

Test 4

Biology: Cell Structure and function
○ Physics: Waves
○ Chemistry: Liquids
○ English: Types of clauses
○ Logical Reasoning: Logical problems

1 / 40

Which cytoskeletal component is primarily involved in the movement of cilia and flagella?

Microfilaments

Intermediate filaments

Microtubules

Actin filaments

2 / 40

Which structure is responsible for the breakdown of damaged organelles and cellular debris?

Lysosome

Ribosome

Centriole

Endoplasmic reticulum

3 / 40

Which type of transport across cell membranes requires energy expenditure by the cell?

Facilitated diffusion

Osmosis

Active transport

Passive transport

4 / 40

Which of the following is NOT a function of vacuoles in plant cells?

Storage of water and ions

Storage of pigments

Detoxification of harmful substances

Maintenance of turgor pressure

5 / 40

Which organelle plays a key role in apoptosis (programmed cell death)?

Endoplasmic reticulum

Golgi apparatus

Lysosome

Mitochondria

6 / 40

Which type of cellular junction forms a barrier to prevent leakage of extracellular fluid across a layer of epithelial cells?

Gap junctions

Tight junctions

Desmosomes

Plasmodesmata

7 / 40

Which cellular structure is responsible for the production of ribosomal RNA (rRNA)?

Nucleolus

Mitochondria

Centriole

Peroxisome

8 / 40

Which of the following is not a function of the cell membrane?

Regulation of cell transport

Cell recognition and signaling

Synthesis of proteins

Structural support

9 / 40

In which phase of the cell cycle does DNA replication occur?

G1 phase

S phase

G2 phase

M phase

10 / 40

Which organelle is responsible for detoxifying harmful substances in liver cells?

Nucleus

Golgi apparatus

Smooth endoplasmic reticulum

Lysosome

11 / 40

The sound wave in air is:

Transverse

Longitudinal

Partly transverse and partly longitudinal

Electromagnetic

12 / 40

Which of the following affects the speed of sound in a medium?

Temperature

Pressure

Humidity

All of the above

13 / 40

The speed of sound in air is:

Higher than in water

Higher than in steel

Lower than in water

The same in all media

14 / 40

The intensity of sound at a point is inversely proportional to the square of its:

Wavelength

Amplitude

Distance from the source

Frequency

15 / 40

The pitch of a sound is determined by its:

Frequency

Wavelength

Amplitude

Speed

16 / 40

When the temperature of air increases, the speed of sound in air:

Decreases

Increases

Remains the same

None of the above

17 / 40

Sound waves cannot travel through:

Solids

Liquids

Gases

Vacuum

18 / 40

The time period of a sound wave is 0.02 seconds. Its frequency is:

20 Hz

50 Hz

25 Hz

0.02 Hz

19 / 40

The wavelength of a sound wave in a certain medium is 1.7 m and its frequency is 200 Hz. What is the speed of sound in that medium?

34 m/s

340 m/s

68 m/s

70 m/s

20 / 40

The speed of sound in water is approximately:

1500 m/s

3000 m/s

340 m/s

1700 m/s

21 / 40

Which statement about the boiling point of a liquid is correct?

Boiling point decreases with increasing external pressure.

Boiling point increases with decreasing external pressure.

Boiling point is independent of external pressure.

Boiling point is inversely proportional to temperature.

22 / 40

Which factor influences the vapor pressure of a liquid?

Temperature

Volume

Density

Surface area

23 / 40

At what temperature does water boil at standard atmospheric pressure?

0°C

100°C

373 K

212°F

24 / 40

Which substance exhibits the strongest hydrogen bonding?

Methane (CH4)

Ethanol (C2H5OH)

Water (H2O)

Carbon dioxide (CO2)

25 / 40

Which intermolecular force is the weakest among the following?

Hydrogen bonding

Dipole-dipole interactions

London dispersion forces

Ionic bonding

26 / 40

Which property of liquids is described by the tendency of molecules to spread out and mix with each other?

Diffusion

Expansion

Compression

Evaporation

27 / 40

The man ____ got my phone back was poor and homeless.

that I

whom I

from whom I

who I

28 / 40

What type of phrase or clause is it: Out of reach.

Dependent clause

Independent clause

Phrase

None

29 / 40

If you wish to succeed in life, you have to work very hard (Identify the adverb clause)

If you wish

succeed in life

If you wish to succeed in life

Wish to succeed in life

30 / 40

What type of phrase or clause is it: As I was reading.

Phrase

Dependent clause

Independent clause

All of the above

31 / 40

What type of phrase or clause is it: I knew it would happen.

Phrase

Independent clause

Dependent clause

All of the above

32 / 40

She lied in my face as if I knew nothing. (Identify the adverb clause)

She lied

I knew nothing

in my face

as if I knew nothing

33 / 40

Look at this series: 53, 53, 40, 40, 27, 27, … What number should come next?

34 / 40

Look at this series: 22, 21, 23, 22, 24, 23, … What number should come next?

35 / 40

Look at this series: 36, 34, 30, 28, 24, … What number should come next?

36 / 40

Look at this series: 7, 10, 8, 11, 9, 12, … What number should come next?

37 / 40

Look at this series: 2, 1, (1/2), (1/4), … What number should come next?

(1/3)

(1/8)

(2/8)

(1/16)

38 / 40

The phase difference between two points separated by 1 meter in a wave of wavelength 4 meters is:

𝜋

𝜋/2

𝜋/4

2𝜋

39 / 40

The wavelength of the sound wave produced by a tuning fork of frequency 256 Hz is approximately:

1.34 m

1.25 m

1.50 m

1.60 m

40 / 40

The frequency of a wave is 50 Hz and its wavelength is 6 m. What is its speed?

300 m/s

600 m/s

30 m/s

3 m/s

Your score is

The average score is 66%

User Name	Duration	Score
Saqib Hussain	17 minutes 37 seconds	72%
Sundas nawaz	6 minutes 25 seconds	37%
Amina Khalid	5 minutes 58 seconds	80%
Rehman ullah	6 minutes 2 seconds	50%
Mehzal Gulalai	9 minutes 53 seconds	77%
Saqib Hussain	4 minutes 18 seconds	45%
Saqib Hussain	4 minutes 32 seconds	90%
Saqib Hussain	9 minutes 43 seconds	62%
Sumbal	5 minutes 33 seconds	97%
Shabeer	10 minutes 51 seconds	67%
Umar Abubakar	4 minutes 24 seconds	97%
Zohaib	7 minutes 45 seconds	62%
Tariq	15 minutes 2 seconds	82%
Mian Muhammad Tufail Shah	11 minutes 37 seconds	87%
MI kmcite	12 minutes 25 seconds	85%
Rago bhai	16 minutes 17 seconds	47%
Roman Mehboob	21 minutes 28 seconds	77%
Kahaba	2 minutes 2 seconds	32%
khan noor	10 minutes 21 seconds	60%
Dua	7 minutes 33 seconds	70%
UZaim	3 minutes 25 seconds	20%

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