PAF MEDICAL ASSISTANT PAST PAPER 2021 TO DATE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
- Matthias Schleiden
- Theodor Schwann
- Both A and B
- None of these
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Explanation
The cell was first coined by an English scientist Robert Hooke in the year 1665.
Later the cell theory was given by Matthias Schleiden and Theodor Schwann.
- Newton’s law
- Hooke’s law
- Lenz’s law
- Faraday’s law
- None of these
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Explanation
Hooke's law states that the applied force F equals a constant k times the displacement or change in length x, or F = kx.
- Glucose into pyruvate
- Fructose into pyruvate
- Both
- None
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Explanation
Glucose, also called dextrose, one of a group of carbohydrates known as simple sugars
- Produced no ATP
- Takes place in Cytoplasm
- Is the same as fermentation
- None of these
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Explanation
Glycolysis, the metabolic pathway that converts glucose into pyruvate
Takes place in the cytoplasm (specifically the cytosol) of both prokaryotic and eukaryotic cells.
It acts as the initial stage of cellular respiration, occurring independently of oxygen to produce a net gain of 2 ATP and 2 NADH molecules.
Additional Products: Generates 2 NADH.
سمندری پانی سے نمکیات اور دیگر نجاستوں کو نکال کر پینے اور آبپاشی کے لیے موزوں بنانے کے عمل کو کہتے ہیں؟
- Water purification
- Water recycling
- Water harvesting
- Water Desalination
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Explanation
Desalination is the process by which the dissolved mineral salts in water are removed.
- Beautiful
- Horrible
- Charming
- Pleasant
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Explanation
- Lovely = خوبصورت، پیارا
- Horrible = خوفناک، برا، بھیانک
- mgh
- ½ mv²
- qV
- None of these
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Explanation
Potential energy (PE) = m × g × h,
where:
- m = mass (kg)
- g = acceleration due to gravity (9.8 m/s²)
- h = height (m)
- OR gate
- AND gate
- NOT gate
- None of these
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Explanation
The OR gate gives an output of 1 if any of its inputs are 1.
This behavior is described by the Boolean expression Y = A + B,
Where Y is the output and A and B are the inputs.
In other words, for the output to be 0, all inputs must be 0; otherwise, the output is 1.
- Near the valence band
- Near the conduction band
- In the middle of the valence & conduction bands
- At infinity
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Explanation
In an intrinsic semiconductor, there are equal numbers of electrons in the conduction band and holes in the valence band
So the Fermi level, which represents the energy level at which the probability of finding an electron is 50%
Lies right in the middle of the band gap between the valence and conduction bands.
مقناطیسی میدان میں بند لوپ میں چارج کو منتقل کرنے کا کام کیا ہے؟
- Zero
- Positive
- Negative
- Neutral
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Explanation
The work done by a magnetic field in moving a charge along a closed loop is zero,
Because the magnetic force on the charge is always perpendicular to its velocity,
And therefore perpendicular to its displacement, resulting in zero work done.