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What structure is formed by the union of the basal and reticular lamina?

A.

Nucleus

B.

Basement membrane

C.

Lysosome

D.

Endoplasmic reticulum

Answer and Explanation

The Correct Answer is B

A. Nucleus: This is an organelle within a cell, not a structure between tissues.

B. Basement membrane: This is the thin, extracellular layer that attaches epithelial tissue to the underlying connective tissue. It is composed of the basal lamina (from the epithelium) and the reticular lamina (from the connective tissue).

C. Lysosome: This is a digestive organelle within a cell.

D. Endoplasmic reticulum: This is an internal cellular membrane system used for protein and lipid synthesis.


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Related Questions

Correct Answer is D

Explanation

A. carbon: Carbon is the "backbone" of all organic molecules, found in both proteins and carbohydrates.

B. hydrogen: Hydrogen is present in all organic molecules, including both proteins and carbohydrates.

C. oxygen: Oxygen is a key component of both proteins and carbohydrates.

D. nitrogen: Proteins are made of amino acids, which contain an amino group (-NH2). While carbohydrates typically only contain C, H, and O, nitrogen is a defining element for proteins.

Correct Answer is C

Explanation

A. Oropharynx: The oropharynx is the middle part of the throat behind the mouth. It is the primary pathway food must travel through to reach the esophagus; therefore, it cannot be blocked during swallowing.

B. Nasopharynx: This must be blocked by the soft palate and uvula to prevent food and liquids from entering the nasal cavity.

C. Larynx: The larynx must be blocked by the epiglottis to prevent food from entering the "windpipe" and causing choking.

D. Mouth: The tongue blocks the front of the mouth during the "oral stage" of swallowing to ensure food moves backward into the throat rather than forward out of the lips.

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