Biology Quiz 1

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3 subatomic particles
Protons
- Positively charged
- Located in the nucleus
Neutrons
- Neutral in charge
- Located in the nucleus
Electrons
- Negatively Charged
- Located in the outer shells of the nucleus
Organic
- carbon based
- only in covalent bonds
Inorganic
- non-carbon based
- covalent and ionic bonds
pH scale
- measurment of hydrogen concentration
- 7: neutral
- 1-6: acid
- 1-3: strong
- 4-6: weak
- 8-14: base
- 8-11: weak
- 12-14: strong
Carbohydrates
Sugar
monosaccharides
- single sugar unit
- ex.) glucose - primary energy molecule that converts ATP
Disaccharides
- double sugar units
- formed during hydration reactions
- ex. broken down sucrose (table sugar - fructose and glucose)
Polysaccharides
- complex sugar units
- ex. starch - found in plants (storage molecules of glucose)
Lipids
Fatty Acids
Triglycerides
- composed of 3 fatty acids
- function: energy reserve and fat insulation
Phospholipids
- 1 glycerol unit and 1 phosphate group
- function: transport and structure
Steroid
- 4 rings of fatty acids
- function: break down fat
DNA

function: stores genes and transfers genetic material
ATP

function: energy molecule
cAMP

function: signal molecule
Essesntial
- not produced in humans
- recieved from outside sources
Nonessential

produced in humans
Hydrolysis

when water (H₂O) is removed or created
Hydration

when water (H₂O) is added or destroyed
Saturated

single carbon bonds that break apart easily
Unsaturated

multiple carbon bonds that form strong and stable molecules

Author

hazelharlston89

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Biology Quiz 1

Description

Human Biology Quiz 1 questions. Wright College, P.Janus

Updated

2011-07-08T04:23:04Z

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