UHS MDCAT Past Papers Solved MCQs for Medical and dental colleges admission test preparation.
UHS MDCAT Past Papers Solved MCQs
During the anaphase stage in a bone marrow cell, each of the chromosomes has
- One chromatid
- No chromatids
- Several chromatids
- Two chromatids
A fully expressed allele is referred to as
- Dominant
- Heterozygous
- Homologous
- Recessive
Who was the first person to observe the chromosomes
- Hofmeister
- Strasburger
- Fleming
- Waldeyer
How many sex chromosomes are present in a human being
- 1 pair
- 3 pair
- 4 pair
- 2 pair
Which of the following is called the sex-linked disease
- Colour blindness
- Malignancy
- Alzheimer’s
- leukemia
Who proposed the chromosomal theory of inheritance
- Sutton
- Correns
- Boveri
- Both Sutton & Boveri
The term chromosome was coined by
- Hoffmeister
- Waldeyer
- Sutton
- Boveri
Skeletal muscles are multinucleated, while cardiac muscles typically have:
- Two nuclei
- Single nucleus
- Multiple nuclei
- No nuclei
Luteinizing hormone (LH) is secreted during which phase of the menstrual cycle
- Luteal phase
- Menstrual phase
- Ovulation phase
- Proliferative phase
Fish that drink a lot of water typically produce:
- Dilute urine
- Ammonia
- Concentrated urine
- Urea
_____ carry information from the cell body of a neuron
- Dendrites
- Synapses
- Axons
- Myelin sheaths
_____ store food in plants
- Chromoplasts
- Chlorophyll
- Amyloplasts
- Chloroplasts
The double lipid bilayer structure of the plasma membrane is primarily due to:
- Hydrophilic tails
- Hydrophobic heads
- Hydrogen bonds between tails
- Hydrophilic heads
The plasma membrane does not allow _____ to pass
- Ions
- Lipids
- Proteins
- Water
A dipeptide contains:
- 3 amino acid
- 4 amino acid
- 1 amino acid
- 2 amino acid
The components of sucrose are:
- Glucose + Sucralose
- Glucose + Fructose
- Glucose + Galactose
- Glucose + Maltose
The theory of catastrophism was suggested by:
- Alfred Wallace
- Georges Cuvier
- Charles Darwin
- Jean-Baptiste Lamarck
Polio attacks which part of the body
- Skin
- Muscles
- Joints
- Bones
Centrioles are _____ to each other
- Perpendicular
- Adjacent
- Opposite
- Parallel
In the cyclic light reaction of photosynthesis, which of the following is cycled
- NADPH
- ATP
- Protons
- Electrons
Antibodies can be dissolved by:
- Amylase
- Protease
- Lipase
- Nuclease
Which type of arthritis is more common in women compared to men
- Ankylosing spondylitis
- Gout
- Rheumatoid arthritis
- Osteoarthritis
HIV attacks which type of cells
- Neurons
- Red blood cells
- T cells
- Muscle cells
A ball and socket joint is present between the humerus and:
- Radius
- Clavicle
- Scapula
- Ulna
Inactive trypsinogen is activated to active trypsin by the action of which enzyme
- Enterokinase
- Pepsin
- Lipase
- Amylase
The globular structure of a protein is due to:
- Tertiary structure
- Secondary structure
- Quaternary structure
- Primary structure
A human organism contains about how many different kinds of proteins
- 100,000
- 500,000
- 10,000
- 50,000
The formula for acetamide (ethanamide) is:
- CH3 COCH3
- CH3 COCl
- CH3 CONH2
- CH3 COOH
Ozone is a:
- Noble gas
- Toxic gas
- Harmless gas
- Inert gas
The formula for an aldehyde is:
- RCHO
- RCOR
- RCOOH
- RCOH
If the medium is _____ for a secondary alkyl halide, the substitution will be SN1:
- Basic
- Non polar
- Polar
- Neutral
Phenol is an:
- Inorganic compound
- Saturated hydrocarbon
- Aliphatic compound
- Aromatic organic compound
At which biological points does the temperature remain constant
- At homeostasis
- During active transport
- During metabolic reactions
- During cell division
Alkanes are non-polar and therefore insoluble in:
- Ethanol
- Ether
- Water
- Benzene
Which one of the following is cyclic
- Butane
- Ethanol
- Cyclic propane
- Methane
The formula of phthalic acid is:
- C6H6 COOH
- C6H4 ( COOH )2
- C6H5 COOH
- C6H6 ( COOH )2
Manganese (Mn) is mostly used in which industry
- Aerospace
- Automotive
- Pharmaceutical
- Steel
Which one of the following is a transition metal
- Sodium (Na)
- Zinc (Zn)
- Nitrogen (N)
- Phosphorus (P)
In the 3rd period of the periodic table, the element with the highest oxidation state is likely:
- Sulfur (S)
- Chlorine (Cl)
- Sodium (Na)
- Phosphorus (P)
The angle in BeCl2 is:
- 180°
- 90°
- 109.5°
- 120°
Before a collision, the kinetic energy of the system typically:
- Increases potential energy
- Increases
- Decreases
- Decreases potential energy
Liquids have indefinite shape, while solids have:
- Indefinite shape
- Definite shape
- Variable shape
- No shape
If the volume of a gas is reduced from V to V/2, the pressure will become:
- 4P
- P/2
- P
- 2P
The kinetic molecular theory of gases suggests that the size of gas molecules is:
- Comparable to the volume of the container
- Significant
- Negligible
- Large
The color of light emitted from hot objects is typically:
- Yellow
- Green
- Blue
- Red
Positive ions in the cathode rays experiment move towards:
- Neutron
- Cathode
- Anode
- Proton
The energy of a neutralization reaction is:
- −46.57kJ mol −1
- −74.65kJ mol −1
- −65.74kJ mol −1
- −57.46kJ mol −1
The halogen in a primary alkyl halide is attached to:
- a benzene ring
- 1 carbon only
- 3 carbons
- 2 carbons
The structure of NaCl (sodium chloride) is:
- Face-Centered Cubic (FCC)
- Hexagonal Close-Packed (HCP)
- Simple Cubic (SC)
- Body-Centered Cubic (BCC)
Which one of the following cannot penetrate the skin
- Gamma rays
- Alpha particles
- X-rays
- Beta particles
In Cl 35.5, the 0.5 is due to:
- Half neutron
- Half electron
- Isotopes
- Half proton
Electrons in a certain system are excited. On average, how long do these electrons stay in their excited state
- 1 nanosecond
- 3 nanoseconds
- No any specific time
- 2 nanoseconds
Losses in a transformer are primarily due to which of the following factors
- Eddy currents and hysteresis
- Magnetic saturation
- Resistance of windings
- Core material
Which of the following does the Theory of Relativity not relate to
- Gravitational waves
- Time dilation
- Space-time relation
- Quantum mechanics
What primarily provides resistance to the human body’s electrical conduction?
- Skin
- Blood
- Bones
- Muscles
Magnetic field is also known as:
- Gauss field
- Electromagnetic force
- Magnetosphere
- B-field
What is a galvanometer used for?
- Amplifying sound
- Measuring pressure
- Measuring temperature
- Detecting electric current
For sterilization, the waves used are:
- Microwaves
- Radio waves
- Ultraviolet waves
- Sound waves
What type of wave does not carry energy?
- Electromagnetic wave
- Stationary wave
- Transverse wave
- Longitudinal wave
What is the number of revolutions in 1260 degrees?
- 1 revolution
- 2 revolutions
- 4 revolutions
- 3.5 revolutions
X-ray production is the opposite of:
- Compton scattering
- Photoelectric effect
- Electromagnetic radiation
- Radioactive decay
What is the momentum of a photon with wavelength and Planck constant (h)?
- P= 2h
- P= 0
- P= h/λ
- P=∞
Which of the following is the lightest particle?
- Electron
- Photon
- Proton
- Neutron
The mass of photon is equall to
- Equal to the mass of a proton
- Varies depending on its energy
- Zero
- Equal to the mass of an electron
If electrons are passed through an electric and magnetic field undeflected, the correct equation is:
- F = q(E x v)
- F = q(E + vB)
- F = q(E / v)
- F = q(E – vB)
In 
, the number of (E) electron , (P) protons and (N) neutrons are
- E= 90 , P= 88, N= 350
- E= 90 , P= 90, N= 90
- E= 88 , P= 90, N= 260
- E= 88 , P= 90, N= 90
A dynamo converts mechanical energy to:
- Potential energy
- Kinetic energy
- Electrical energy
- Thermal energy
The emf produced be generator depends upon
- Number of loops
- Resistance of the circuit
- Length of the wire
- Volt
If the Cp value is 220 units, what could be a possible value for the Cv value?
- 300 units
- 220 units
- 11.7 units
- 250 units
The point where amplitude is maximum called
- Antinode
- Nodal point
- Equilibrium point
- Null point
The distance between two consecutive crust or trough is
- Frequency
- Wavelength
- Period
- Amplitude
The relation between v and ω is
- v=rω
- v= 1/ω
- v=ω
- v=r^2ω
What is the unit of energy
- Volt
- Joule
- Coulomb
- Watt
If maximum height of projectile is 800 m at 45 degree then maximum range is
- R
- 2R
- R/2
- 2R/3
Kinetic energy is
- Vector quantity
- None of them
- Both scalar and vector
- Scalar quantity
The equation of kinetic energy is:
- K.E= 1/2 mv^2
- K.E= mc^2
- K.E= mv^2 / 2
- K.E= mv/2
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