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Definition of exotoxin, hypochondriac, gas exchange, vasectomy, vitamin, phospholipid, acid-base indicator, hydrophilic, physical, endotoxin

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Definition of exotoxin (noun)
form plural: exotoxins

a very harmful poison made by a bacterial cell and released to the surroundings

Examples
Diphtheria is caused by a powerful exotoxin.

Definition of exotoxin
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Definition of hypochondriac (noun)
form plural: hypochondriacs

a healthy person who worries excessively about their health and believes they are ill

Examples
Doctors may become hypochondriacs because they think and learn so much about illness!

Definition of hypochondriac
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Definition of gas exchange (noun)
form plural: gas exchanges

movement of gases from an area of high concentration to an area of low concentration

Examples
Gas exchange occurs in the lungs.

Definition of gas exchange
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Definition of vasectomy (noun)
form plural: vasectomies

operation where the vas deferens are cut leading to sterility

Examples
Bilateral vasectomy is an increasingly popular means of birth control.

Definition of vasectomy
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Definition of vitamin (noun)
form plural: vitamins

a food substance we need in small amounts to be healthy

Examples
Vitamin C deficiency causes scurvy.

Definition of vitamin
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Definition of phospholipid (noun)
form plural: phospholipids

compound containing glycerol joined to one or two fatty acids and phosphorus

Examples
Phospholipids are found in cell membranes.

Definition of phospholipid
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Definition of acid-base indicator (noun)
form plural: acid-base indicators

weak acid or base that changes color according to the pH of the solution

Examples
When put in a solution the acid-base indicator gains or loses protons depending on the Ph and changes its color.

Definition of acid-base indicator
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Definition of hydrophilic (adjective)
having an affinity with water; readily absorbing water

Examples
A phospholipid molecule has a hydrophilic end a hydrophobic end.
Acids are hydrophilic because they are soluble in water.

Definition of hydrophilic
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Definition of physical (adjective)
forms: more physical; most physical; less physical; least physical

relating to the body

Examples
Disorders of the physical body are managed b physicians.

Definition of physical
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Definition of endotoxin (noun)
form plural: endotoxins

a harmful protein contained within certain bacteria and released only when the bacterium dies or is broken down

Examples
Certain gram-negative bacteria produce endotoxins.

Definition of endotoxin
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