Biomedical Engineering GATE 2025 Questions with Answer

Ques 1 Biochemistry

⁹₆C and ¹⁰₆C are ______ whereas ⁹₆C and ⁸₅B are ______

Ques 2 Biomaterials

In the context of temperature sensitive polymers, LCST stands for

Ques 3 Biomaterials

Gelatin solutions P and Q of concentrations 3.5% and 0.5%, respectively, need to be mixed to obtain a 3% solution R. How much volume (in ml) of P needs to be mixed with 100 ml of Q to obtain R? (Choose the correct option)
All concentrations are in units of weight/volume.

Ques 4 Biomaterials

At a given frequency, the storage modulus (G') and loss modulus (G') of four biomaterials are shown in the table below. Which of the following option(s) is/are CORRECT?

Ques 5 Biomaterials

Polylactic-co-glycolic acid (PLGA) is combined with an equal amount (by weight) of hydroxyapatite (HA) to make a bone scaffold. If the porosity of the scaffold is 80%, what is the scaffold density in g/cm³? (rounded off to two decimal places)
Assume densities of PLGA and HA to be 1 g/cm³ and 3 g/cm³, respectively.

Ques 6 Biomaterials

Strength (σ) of an implanted suture is given by the equation σ=σ₀-2 log_e(t) for t≥1, where σ₀ represents the original strength and time t is measured in weeks. If the strength of the suture is 2 MPa at 4 weeks, what will be its strength (in MPa) at 8 weeks? (rounded off to two decimal places)

Ques 7 Biomaterials

The storage modulus (G') of a collagen gel scales as G'~[C]³, where [C] represents the collagen concentration in mg/ml. If the storage modulus of a 1 mg/ml collagen gel is 100 Pa, then the storage modulus of a 3 mg/ml collagen gel is ______ Pa. (rounded off to the nearest integer)

Ques 8 Biomechanics

Let R₁, R₂ and R₃ be the Reynolds numbers corresponding to the following three cases, respectively
Case 1: A 1 μm long bacterium swimming in water
Case 2: A 10 cm long fish swimming in water
Case 3: A 10 m long whale swimming in water
If each of them covers a distance equal to their respective body length in one second, which one of the following is CORRECT?

Ques 9 Biomechanics

The shape of an elastic rod of length l is represented by the position vector &vec;r(s) corresponding to the arc length S. If the bending energy of the rod is

Ques 10 Biomechanics

For a tissue with Young's modulus 4 kPa and shear modulus 1.5 kPa, what is the value of the Poisson's ratio?

Ques 11 Biomechanics

Which of the following statement(s) is/are CORRECT about isotonic and isometric tests?

Ques 12 Biomechanics

A Newtonian fluid of viscosity μ is undergoing laminar flow in a tube of radius R. For a constant pressure drop per unit length along the tube, which of the following statement(s) is/are CORRECT?
Note: r represents the radial position; assume no slip condition at the boundaries.

Ques 13 Biomechanics

For pulsatile blood flow through an artery of internal diameter 20 mm, wall thickness 1 mm and Young's Modulus 1 MPa, what is the wave speed in metres per second? (rounded off to one decimal place).
Assume the density of blood to be 1050 kg/m³.