1 :

Hint : 🧬energy conversion sites

Correct Answers:

  • thylakoid

Rationale :
🎯The mitochondrial inner membrane is the site of the electron transport chain in cellular respiration. The thylakoid membrane in chloroplasts is the site of the light-dependent reactions (which also include an electron transport chain) in photosynthesis.
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2 :

Hint : Thoracic cavity = chest

Correct Answers:

  • Heart and lungs

Rationale :
✒The thoracic cavity houses the heart and lungs, making them the most vulnerable to blunt trauma in this area.
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3 :

Hint : 💎Myelin = insulation

Correct Answers:

  • Insulation

Rationale :
🔍The myelin sheath surrounds the axon of a nerve cell and functions as insulation, allowing faster transmission of electrical impulses along the neuron.
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4 :

Hint : ☑Carrying capacity = population levels off

Correct Answers:

  • B

Rationale :
🎯Curve B levels off after a period of growth, indicating that the population size has stabilized. This pattern is characteristic of a population reaching its carrying capacity, where the birth rate equals the death rate and resources are limited but sufficient to support the population.
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5 :

Hint : Diastole = dilation

Correct Answers:

  • Diastole

Rationale :
✔Diastole refers to the phase in the cardiac cycle when the heart muscles relax, allowing the chambers to fill with blood.
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6 :

Hint : Each 1-unit drop in pH equals 10× more hydrogen ions.

Correct Answers:

  • 100,000

Rationale :

🎯The pH scale is logarithmic, meaning each unit change represents a 10× difference in hydrogen-ion concentration.

  • Difference between pH 9 and pH 4 = 5 units
  • Therefore, hydrogen-ion concentration is:

♦105=100,000 times stronger

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7 :

Hint : 💎mutations in reproductive (germ) cells are inherited by offspring.

Correct Answers:

  • germ

Rationale :

🧬Germ cells (egg or sperm) are involved in reproduction and pass genetic material to offspring.

  • Somatic cells, white blood cells, and stem cells do not directly pass mutations to offspring.
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8 :

Hint : ➡main site where nutrients are broken down and absorbed into the bloodstream.

Correct Answers:

  • Small Intestine

Rationale :

💡Small intestine→Major site for digestion and absorption.

  • Esophagus: Only transports food — no digestion or absorption.
  • Stomach: Primarily digestion, minimal absorption.
  • Gallbladder: Stores bile — no digestion or absorption
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Total Questions: 8

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