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anatomy and physiology 203 > Chapter 2 > Flashcards

Chapter 2 Flashcards

1
Q

Ionic Bond

A
  • One atom loses an electron and another gains one
  • Atom that gains an electron is called an anion (- Charge)
  • Atom that loses an electron is called a cation (+ Charge)
  • The charge between the ions holds bond together.
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2
Q

Decomposition Reaction

A

-Compounds are broken down into molecules/atoms
-Breaking of bonds
-Synthesis Reaction
(AB>A+B)

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3
Q

Hydrolysis

A
  • Addition of water to break a bond

- Catabolic Reaction

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4
Q

Structure of An atom (Particles)

A

Proton) Positive particle found in the nucleus
Electron) Negative particle found in electron cloud orbiting the nucleus.
Neutron) Neutral particle found in the nucleus

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5
Q

Radiant/ Electromagnetic energy

A
  • Travels in waves. (Visible light, x rays, etc..)
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6
Q

Hydrogen Bond

A

-Slight attraction attracting a electropositive hydrogen to an electronegative atom.

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7
Q

Chemical Energy

A

-Found in bonds of chemical substances

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8
Q

Biochemistry

A

Study of the chemical composition of living things

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9
Q

Molecules

A

Two or more atoms bonded together

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10
Q

Compounds

A

Two or more different atoms bonded together. (Different)

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11
Q

Inorganic compounds

A

Do not contain carbon

Ex) Water, salts, acids and bases

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12
Q

Mass number

A

Total Number of protons and neutrons in the nucleus

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13
Q

Synthesis Reaction

A

-Atoms/ molecules combine to form a larger compound
-Bond Forms
-Anabolic Reaction
(A+B>AB)

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14
Q

Energy Principals

A
  • Energy can change forms

- Some will be lost during this process as heat.

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15
Q

Electrons (Properties)

A
  • Determines whether or not a chemical reaction will take place.
  • Located in electron shells outside the nucleus.
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16
Q

Nonpolar Covalent Bond

A

Atoms are shared equally and there is no net charge

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17
Q

Isotopes

A

Different Variations of atoms. The number of neutrons is different than the standard atom

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18
Q

Two Electron Models

A

Planetary Model) shows electrons following set path around the nucleus
Orbital Model) shows electrons as a negatively charged cloud surrounding the nucleus

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19
Q

Organic compounds

A

Contain carbon

Ex) Carbs, Fats, Proteins and Nucleic acids

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20
Q

Polar Covalent Bond

A
  • Unequal sharing of electrons
  • Atoms with 6 or 7 electrons are electronegative (strong electron attraction)
  • Atoms with 1 or 2 electrons are electropositive
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21
Q

Matter

A
  • Has mass and occupies space

- Either a liquid, solid or gas.

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22
Q

Covalent Bond

A

Atoms in the bond share two or more electrons.

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23
Q

Electrical Energy

A

-The movement of charged particles

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24
Q

Dehydration Reaction

A
  • Removal of water to from a bond

- Anabolic reaction

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25
Q

Exchange/Displacement reaction

A

-Both a Synthesis and Decomposition reaction

AB+CD>AC+BD

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26
Q

Mechanical Energy

A
  • The direct movement of matter
27
Q

Chemical Bonds

A

-Energy interactions between electrons

28
Q

Properties of Water

A
  1. High Heat Capacity) Absorbs heat without temp change
  2. High Heat of Vaporization) Requires a lot of energy to evaporate
    3) Polar Solvent Properties) excellent solvent because it is a polar molecule
  3. Reactivity) Excellent at breaking down/building molecules
  4. Cousioning) the internal organs
29
Q

Atomic Weight

A

Average mass number of all the different isotopes for a certain element.

30
Q

Mixtures

A

Two or more components physically mixed

-Can be solutions, colloids, or suspensions

31
Q

Solutions

A
  • Homogenous Mixture) particles are mixed evenly. Consist of a solvent and a solute
  • Solvent) Substance present in the greatest amount
  • Solute) dissolved in solvent
32
Q

Energy (Define and different types)

A

-The ability to do work or put matter into motion
Kinetic energy) energy in motion
Potential energy) stored energy.

33
Q

Atomic Number

A

Number of Protons in the Nucleus

34
Q

Four elements that make up 96.1% of our bodies

A

Carbon, Hydrogen, Oxygen and Nitrogen.

35
Q

Salts

A
  • Held together by ionic bonds
  • Formed by an anion and a Cation.
  • Called an electrolyte (can conduct electricity in a solution)
36
Q

Properties of Acids and Bases

A
  • Electrolyte

- Ionize and dissolve in water

37
Q

Acids

A
  • Proton Donors (Release H+ ions into a solution)

- High H+, Low OH-, pH 0-6.99

38
Q

Bases

A
  • Proton Acceptors (Pick up H+ ions in a solution)

- Low H+, High OH-, pH 7.01-14.

39
Q

pH Scale

A
  • Measurement of H+ ions in a solution.
  • Goes 1 to 14
  • Logarithmic scale (ph of 5 is ten times more acidic than a pH of 6)
40
Q

Neutralization

A
  • When a Acid and Base come together they neutralize (pH of 7)
  • H+ and OH- come together to form water and the cation and anion form a salt.
41
Q

Buffers

A
  • Keeps pH within normal limits
  • Removes H+ from acidic solutions
  • Adds H+ to basic solutions
42
Q

Carbonic Acid System

A
  • Important buffer system of the blood
  • If pH drops H2CO3 will be formed
  • I pH rises HCO3 will be formed and H+ ions will be released.
43
Q

Properties of Carbon

A

-Electroneutral (shares electrons instead of donating them. Will form 4 covalent bonds)

44
Q

Monomers and Polymers

A
  • Monomers are building blocks

- Long chains of monomers are called polymers.

45
Q

Carbohydrates (properties)

A
  • contain C, H, and O ([CH2O]n)
  • maks sugars and starches
  • Major source of Fuel
46
Q

Monosaccharides

A
  • Three to seven Carbon atoms
  • Monomers of Carbs
  • Important carbs include pentose sugars (ribose and deoxyribose) and hexose sugars (glucose).`
47
Q

Disaccharides

A
  • Two linked sugars
  • Too large to fit through the cell membrane
  • Important ones include glucose, lactose, and maltose
48
Q

Polysaccharides

A
  • Made of lots of sugars
  • Not very soluble
  • Starch and Glycogen are examples
49
Q

Lipids

A
  • Contain C, H, O (oxygen is present in the least amount)

- Not soluble in water (Hydrophobic)

50
Q

Neutral Fats/ Triglycerides

A
  • Fat when solid and oil when liquid
  • Made of three fatty acids bound to a glycerol (trigliceride)
  • Store energy and insulate and protect the body.
51
Q

Saturated Fats

A
  • Fatty acid chain has maximum amount of H+ ions attached
  • Max amount of covalent bonds.
  • Solid at room temp
52
Q

Unsaturated Fat

A

-Fatty acid chain has double bonded carbon atoms which creates kinks in the chain.

53
Q

Phospholipid

A
  • Triglyceride but one Fatty acid tail is replaced with a phosphorus head
  • Has a polar hydrophilic head and a nonpolar hydrophobic
54
Q

Eicosanoids

A
  • Diverse lipids derived from a fatty acid
  • Prostaglandins are important eicosanoids which plays a role in blood clotting, pressure, inflammation, and labor contractions.
55
Q

Fat Soluble vitamins

A

vitamins A,D,E, and K

56
Q

Lipoproteins

A

Transports fats in the blood.

57
Q

Proteins

A

-Polymers made of amino acids.

58
Q

4 levels of structure of protein

A

1) Primary) Straight chain of linked amino acid

2) Secondary
Alpa) Twisting Structure
Beta) Folded Structure.

3) Tertiary Structure) Mixture of Primary and Secondary Structures. Most proteins are this structure
4) Quaternary) More than one polypeptide chain.

59
Q

Shapes of Protiens

A

Structural) long, fibrous protein that is resistant and used for structure.
Globular) Compact and spherical. has an active site for a specific function.

60
Q

Protein Denaturation

A
  • Proteins unfold and the active site is destroyed.

- Caused by decreased pH or increased temperature.

61
Q

Enzymes

A
  • Biological catalysts.

- Speed up chemical reaction by lowering the activation energy required to start a reaction

62
Q

Nucleic Acids

A
  • Deoxyribonucleic acid and ribonucleic acid
  • Largest molecules in the body
  • Monomers are called nucleotides
63
Q

DNA

A
  • Purines (two ring bases): Adenine (A), Guanine (G)
  • Pyrimidines (one ring bases): Cytosine (C), and Thymine (T)
  • Base-pair rule – each base pairs with its complementary base (A always pairs with T; G always pairs with C)
  • Double helix in the cell nucleus
  • Provides instructions for protein synthesis
64
Q

RNA

A

Four bases: (Adenine (A), Guanine (G), Cytosine (C), and Uracil (U))
Pentose sugar is Ribose

anatomy and physiology 203 (43 decks)

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