The Membranes of the Blood-Brain Barrier Need to Be Fused

question 98

Multiple Choice

The membranes of the blood-brain barrier need to be fused, preventing any substances from entering and/or escaping between cells. The type of intercellular junction best suited for this need is a ________.

• A)desmosome
• B)gap junction
• C)tight junction
• D)ion channel

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Definitions:

Electron Transport Chain

A sequence of electron carrier molecules that transfer electrons and release energy used to make ATP, found in the inner mitochondrial membrane.

Citric Acid Cycle

A series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate derived from carbohydrates, fats, and proteins into carbon dioxide.

Glycolysis

The metabolic pathway that converts glucose into pyruvate, generating energy in the form of ATP.

Anaerobic Respiration

A form of respiration that occurs in the absence of oxygen, where energy is produced by the breakdown of glucose through processes such as fermentation.