MCAT · Practice Sheet 19

1. 1.

   Biology

   In a monohybrid cross (Aa × Aa) producing 176 F₂ offspring, how many are expected to show the dominant and the recessive phenotype (3:1 ratio)?

   Formula:Monohybrid Cross (3:1)

   $\text{Dominant}:\text{Recessive} = 3:1$

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2. 2.

   Chemistry

   53 mL of a 1 M solution is diluted to 188 mL. Find the new concentration.

   Formula:Dilution

   $M_1V_1 = M_2V_2$

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3. 3.

   Chemistry

   A solution is made by dissolving 22 g of solute in 114 g of solvent. Find the mass percentage of the solute.

   Formula:Mass Percentage

   $\%\,\text{mass} = \dfrac{\text{solute}}{\text{solution}}\times 100$

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4. 4.

   Biology

   Under a microscope, an object of actual size 3 mm appears 198 mm. Find the magnification.

   Formula:Microscope Magnification

   $M = \dfrac{\text{image size}}{\text{actual size}}$

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5. 5.

   Biology

   Calculate the BMI of a person weighing 73 kg with height 1.47 m.

   Formula:Body Mass Index

   $BMI = \dfrac{m}{h^{2}}$

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6. 6.

   Physics

   Find the electrical power when 191 V drives a current of 3 A.

   Formula:Electrical Power

   $P = VI$

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7. 7.

   Physics

   Find the momentum of a 26 kg body moving at 10 m/s.

   Formula:Linear Momentum

   $p = mv$

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8. 8.

   Chemistry

   A solution is made by dissolving 7 g of solute in 80 g of solvent. Find the mass percentage of the solute.

   Formula:Mass Percentage

   $\%\,\text{mass} = \dfrac{\text{solute}}{\text{solution}}\times 100$

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9. 9.

   Physics

   Find the electrical power when 98 V drives a current of 12 A.

   Formula:Electrical Power

   $P = VI$

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10. 10.

    Biology

    Under a microscope, an object of actual size 3.7 mm appears 296 mm. Find the magnification.

    Formula:Microscope Magnification

    $M = \dfrac{\text{image size}}{\text{actual size}}$

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11. 11.

    Physics

    Find the electrical power when 182 V drives a current of 14 A.

    Formula:Electrical Power

    $P = VI$

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12. 12.

    Physics

    Find the momentum of a 22 kg body moving at 32 m/s.

    Formula:Linear Momentum

    $p = mv$

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13. 13.

    Physics

    Find the force required to accelerate a 19 kg mass at 4 m/s².

    Formula:Newton's Second Law (F = ma)

    $F = ma$

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14. 14.

    Physics

    Find the electrical power when 88 V drives a current of 9 A.

    Formula:Electrical Power

    $P = VI$

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15. 15.

    Physics

    If 3,876 J of work is done in 30 s, find the power.

    Formula:Power

    $P = \dfrac{W}{t}$

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16. 16.

    Physics

    Calculate the potential energy of a 20 kg object at a height of 32 m (g = 9.8 m/s²).

    Formula:Gravitational Potential Energy

    $PE = mgh$

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17. 17.

    Physics

    A projectile is launched at 17 m/s at 30° to the horizontal. Find its range (g = 9.8 m/s²).

    Formula:Projectile Range

    $R = \dfrac{u^{2}\sin 2\theta}{g}$

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18. 18.

    Physics

    A force of 220 N acts on an area of 26 m². Find the pressure.

    Formula:Pressure

    $P = \dfrac{F}{A}$

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19. 19.

    Biology

    In a monohybrid cross (Aa × Aa) producing 52 F₂ offspring, how many are expected to show the dominant and the recessive phenotype (3:1 ratio)?

    Formula:Monohybrid Cross (3:1)

    $\text{Dominant}:\text{Recessive} = 3:1$

    View formula →
20. 20.

    Biology

    Calculate the BMI of a person weighing 99 kg with height 1.79 m.

    Formula:Body Mass Index

    $BMI = \dfrac{m}{h^{2}}$

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