How does a vesicle form from the cell membrane?
What will be an ideal response?
When a bilayer is disrupted, it seals itself. The disruption exposes the fatty acid tails of the phospholipids to their watery surroundings. Remember, in water, phospholipids spontaneously rearrange themselves so that their nonpolar tails stay together.
A vesicle forms when a patch of membrane bulges into the cytoplasm because the hydrophobic tails of the lipids in the bilayer are repelled by the watery fluid on both sides. The fluid "pushes" the phospholipid tails together, which helps round off the bud as a vesicle, and also seals the rupture in the membrane.
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How does the body respond when it first encounters a foreign particle or bacterial pathogen?
What will be an ideal response?
Adaptive immunity is also referred to as ____ immunity
a. acquired b. innate c. secondary
d. latent e. hidden
The smallest unit that retains the chemical and physical properties of an element is a(n) ____
a. proton b. compound c. molecule d. neutron e. atom
Food and drink are prevented from entering the respiratory passageways during swallowing by means
of the a. glottis. b. pharynx. c. epiglottis. d. larynx. e. trachea.