Which is not a function of epithelial tissue?
Absorption
Secretion
Assimilation
Protection
The Correct Answer is C
A. Absorption: This is a major function of epithelial tissue, particularly in the digestive tract.
B. Secretion: Glandular epithelium is specialized to secrete substances like sweat, enzymes, and hormones.
C. Assimilation: This is the correct choice because it is a metabolic process of the whole body/cell to incorporate nutrients, not a specific primary function of epithelial tissue.
D. Protection: The skin (epidermis) is epithelial tissue that serves as the body's primary protective barrier.
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Related Questions
Correct Answer is C
Explanation
A. repolarization: This refers to the phase where a neuron returns to its resting state after firing.
B. refraction: In biology, this refers to the period during which a nerve cannot fire again (refractory period).
C. saltatory conduction: This is the correct term for an impulse "jumping" from one Node of Ranvier to the next along a myelinated axon, which significantly increases signal speed.
D. diffusion: This is the passive movement of molecules and does not describe the electrical leaping of a nerve impulse.
Correct Answer is B
Explanation
A. lipids: Lipids are organic molecules because they are composed of carbon-hydrogen chains.
B. electrolytes: Electrolytes (like sodium, potassium, and chloride) are inorganic substances because they do not contain carbon-hydrogen bonds.
C. carbohydrates: Carbohydrates are organic compounds consisting of carbon, hydrogen, and oxygen.
D. proteins: Proteins are organic polymers made of amino acid chains containing carbon.
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