PRE MDCAT 2024

PRE MDCAT 2024 BY LETS

After passing the pre-MDCAT, you will gain access to the 22-day MDCAT Prep Portal. You can attempt the test at any time, and if you fail, you can reattempt it as many times as needed until you pass. Once you pass, you will gain access to the portal. Copy and paste the portal link on your mobile device and click on it daily to practice the test.

All of the following organelles are commonly present in both plant and animal cells except: Mitochondria Ribosomes Centrosome Smooth endoplasmic reticulum

Which group correctly represent prokaryotes? Yeast, Nostoc and Plasmodium Bacteria, Nostoc and Cyanobacteria Amoeba, Paramecium and Volvox Mustard plant, Euglena and Nostoc

Polypeptide synthesis starts from __________ of mRNA molecule. 5´-end 3´-end Sometimes 5´-end sometimes 3´-end Center of mRNA molecule

Central fibrill area of nucleolus is responsible for the synthesis of: rRNA Ribosomal proteins Ribosomes Histones

Our blood normally contains __________ glucose. 0.8% 8% 0.008% 0.08%

Which of the following will be soluble in water? Cellulose Triglycerides Keratin Myoglobin

Which property of proteins enables them to act as pH buffers? They are soluble They contain carboxyl and amino groups They have high molecular weight They possess both secondary and tertiary structure

All of the following enzymes are secreted in inactive form except: Pepsin Trypsin Chymotrypsin Catalase

The effect of reversible inhibitor can be neutralized by increasing the concentration of: Substrate Activator Enzyme Inhibitor

In eukaryotes, enzymes are mostly: Present in extracellular fluid Bound to organelles Dissolved in cytoplasm Present in lumen of organs

Which statement is not true for viruses? Extremely small infectious agents Can multiply only in living cells Can be seen under electron microscope Can be grown on artificial medium

Which of the following bacteria are also called recyclers of the nature? Pathogenic bacteria Parasitic bacteria Photosynthetic bacteria Saprotrophic bacteria

Immune response after secondary exposure of antigen is activated due to: Memory cells B-cells T-cells Plasma cells

The most important cause of over-activity of an endocrine gland can be: Tumor of secretory cells Nutritional deficiency Surgical removal of gland Congenital deficiency

Besides activating the egg, another role of a sperm is to carry __________ to the egg. RNA DNA Ribosomes Mitochondria

Which carboxylic acid has different odour from others Formic acid Acetic acid Propionic acid Butyric acid

Which of the following gives an aldehyde on dry distillation? Calcium acetate + calcium benzoate Calcium formate + calcium acetate Calcium benzoate Calcium acetate

When two lone pairs and two bond pairs are around the central atom, decrease in the bond angle may be upto 109.5° 102° 104.5° 107.5°

The group which activates the benzene ring – CHO – COOH – NH2 – COR

Collagen and albumin are Derived proteins Simple proteins Polyamide Polysaccharide

What is reason that the ice at 0°C occupies more volume than liquid water Empty spaces Ionic bond Intermolecular forces Debye forces

Which one of the following characteristics of the transition metal is associated with their catalytic activity Variable oxidation states Colour of hydrated ions Paramagnetic behaviour High enthalpy of atomization

For a reversible reaction the value of KC is 10, if the concentration of products is reduced to half, then the value of KC for that reaction at constant temperature will be: 4 5 10 20

The increase in rate of reaction is 8 times if temperature of substance changes from 2K to 4K 2K to 22K 10K to 40K 12K to 22K

Which one has highest first ionization energy Al P Mg S

During Haber’s Process of ammonia manufacturing, maximum yield of products can be obtained by Countious withdrawal of ammonia Decreasing temeprature Increasing pressure All of these

A molecule that binds with an enzyme and decreases its activity is known as Activator Co-factor Inhibitor Co-enzyme

Find the terminal potential difference of emf of the battery is 8Volt and its internal resistance 0.5 ohm and current is 4A 4 volt 6volt 8volt 10volt

The product of momentum and acceleration of a body is measured in unit that of Force Torque K.E Power

The internal energy of ideal gas is Totally K.E Totally P.E Partly K.E and partly P.E Neither K.E nor P.E

A capacitor is charged with a battery and energy stored is U. After disconnecting battery another capacitor of same capacity is connected in parallel to the first capacitor. Then energy stored in each capacitor is U/2 U/4 4U 2U

AC generator stops suddenly when: External voltage overcomes the back emf Torque of back emf exceeds the external torque Resistance of the coil produces heat Moment of inertia of the coil decreases

The minimum number of diodes required for full wave rectification are 1 2 3 4

As the temperature of black body is increased the wavelength of maximum intensity radiation. Will shift towards the longer wavelength Will shift towards the shortest wavelength Will not changed None

One disintegration per second is equal to. One curie One Becquerel One half-life All of these

Momentum is conserved In an elastic collision of two balls In an inelastic collision of two balls In the absence of an external force In all of the preceding cases

A string is held under tension. When it is plucked it vibrates with a frequency f. Which of the following would result in a lower value for f? Decreasing the cross-sectional area of the string Decreasing the density of the material of the string Increasing the length of the string Increasing the tension

Potential applied across a 2 F capacitor is 10 V. Energy stored in it will be 200 J 100 J 20 J 10 J

What is the unit of the temperature coefficient of resistance (α)? oC ⁰C-¹ Ω∘C ∘CΩ

Directions: Choose the Correct Option. Only seldom have someone become a criminal by chance. Only seldom someone has become a criminal by chance Only seldom someone becomes a criminal by chance. Only seldom does someone become a criminal by chance

Directions: Choose the Correct Option. More than 160 million people suffer from malaria More than 160 million people endure malaria. More than 160 million people endured malaria. More than 160 million people suffers from malaria.

Directions: Choose the Correct Option. When he got back home, he excused himself and promised that he would never run away again. When he got back home, he apologized and promised that he would never run away again. When he got back home, he excused and promised that he would never run away again. When he got back home, he apologized himself and promised that never he would run away again.

Directions: Fill in the Blank. He is not really a good-looking person, __________ he has enormous charm. and yet for so

Directions: Choose the correct Synonym MAGNATE subordinate tycoon attendant flunky

Directions: Choose the correct Spelling. Matinee Matine Matienee Maitinee

Directions: Choose the Correct Option. Norway has decided to increase her trade with Romania. Norway has decided to increase his trade with Romania. Norway has decided to increase their trade with Romania. Norway has decided to increase one’s trade with Romania.

Statements I. Dental researchers recently discovered that contamination usually occurs after toothbrushes have been used for four weeks II. The number of people who replace their toothbrushes at least once a month is increasing. Statement I is the cause and statement II is the effect Statement II is the cause and statement I is the effect Both statements I and II are independent causes Both the statements I and II are effects of independent causes Both the statements I and II are effects of some common cause

Statement: With the change in value system, money assumed top-most important now a days, ultimately leading to criminal activities. Courses of action: I. Social services organizations should make special efforts to propagate the importance of ethical value over money. II. Print and electronic media should be advised by the government to give special emphasis on the importance of ethics and value systems. Only I follows Only II follows Either I or II follows Both I and II follow None follows

Statements: Some days are nights. Some nights are weeks. Some weeks are months. All months are years. Conclusion: I. Some years are nights. II. Some years are days. III. Some months are nights. IV. Some years are weeks. Only I, II and III follow Only I, III and IV follow Only II, III and IV follow None of these

Ocean : Water :: Glacier: ? Cooling Cave Ice Mountain