Bio Test 1

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Stimulus

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Stimulus

Life responding to enviorment

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homeostasis

a balanced internal environment

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metabolism

the processing of energy

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DNA

genetic information

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Elements

pure materials that exist as atoms

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Molecules

Don't need to be pure and made up of 2+ atoms

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Enzymes

Needed to make a reaction in the cell

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Protons

Positive Charge

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Neutrons

Neutral Charge

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Electrons

Negative Charge

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Ions

Charged atoms

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Ionic bonds

Two atoms with opposite charges that are attracted to one another (permanent charge)

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Covalent bonds

2 atoms that share a pair of electrons to become stable (Partial charge)

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Polar Molecule

Two differently charged areas in a molecule, even when its neutral overall. (Oxygen has a stronger pull on electrons, meaning it'll hang out with it.)

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Hydrogen Bonding

The positive charge (Hydrogen) is weakly attracted to the negative charge (Oxygen) of a different molecule

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Cohesion

Forming hydrogen bonds with other molecules

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Surface Tension

When more hydrogen bonds are formed along the surface

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Hydrophilic

"Water loving"

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Adhesion

Other substances that are polar or have a charge attracted to water

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Universal Solvent

When hydrophilic substances dissolve in water bc ionic and polar substances disolve

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  1. Life has order

  1. It is organized around cells

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  1. Life responds to environment

  1. Stimulus

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  1. Life regulates itself

  1. Living organisms attempt to maintain homeostasis (a balanced internal environment)

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  1. Life processes energy

  1. Process of storing energy is called metabolism, energy can either be stored or released

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  1. Living objects grow and develop

  1. Living organisms get bigger, and multicellular organisms change as they grow

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  1. Living organisms reproduce

  1. Pass their genes (DNA) to a new individual.

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Moderate Temp

bonds absorb energy by evaporating and taking it with it

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Density of Ice

ice is less dense than water bc molecules are spread out more and even

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dehydration synthesis

Removes a water molecule, forming a new bond

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hydrolysis

Adding a water molecule to break a bond

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Organic

Carbon Based

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monosaccharide

A single sugar molecule; fast energy

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glycosidic bond

when sugars are joined together, creating a bond

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peptide bond

when amino acids are joined, creating a bond

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ester bond

when fatty acids are joined to a glycerol

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saturated fats

solid fats, rigid molecule makeup

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unsaturated fats

liquid, less rigid

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Lipids

Insoluble in water, includes fats, phospholipids, steroids, and waxes, stores large amounts of energy,

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phospholipid

build cell walls

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Hydraulic head

water-loving

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Hydraulic tail

water-hating

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carbohydrate

a monosaccharide that helps build structures

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disaccharide

2 sugar molecules, fast energy

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polysaccharide

more than 2 sugar molecules storing energy long term

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phospholipids

build cell membranes

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R

variable

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