Ch.2 - Chemistry

1. 1The bond formed when two atoms share a pair of electrons is called a

   1. Ahydrogen bond
   2. Bnonpolar bond
   3. Ccovalent bond
   4. Dwater bond
2. 2The atomic number of carbon is 6, so it must contain 12 electrons.

   1. AVerdadero
   2. BFalso
3. 3An atom that has gained or lost electrons is called a(n)

   1. Amolecule
   2. Bnucleon
   3. Cion
   4. Delement
4. 4Define atom: Smallest [blank_start]particle[blank_end] of an element

   1. Aparticle
5. 5Features of a proton: Has [blank_start]positive[blank_end] charge. Has [blank_start]mass[blank_end]. Used to determine [blank_start]identity[blank_end].

   1. Apositive
   2. Bmass
   3. Cidentity
6. 6Features of neutrons: [blank_start]No[blank_end] charge. Has mass. Number can [blank_start]change[blank_end].

   1. ANo
   2. Bchange
7. 7Features of electrons: [blank_start]Negative[blank_end] charge. Mass is [blank_start]negligible[blank_end]. Number can [blank_start]change[blank_end].

   1. ANegative
   2. Bnegligible
   3. Cchange
8. 8Define C.H.N.O.P.S : [blank_start]Carbon[blank_end] [blank_start]Hydrogen[blank_end] [blank_start]Nitrogen[blank_end] [blank_start]Oxygen[blank_end] [blank_start]Phosphorus[blank_end] [blank_start]Sulfur[blank_end]

   1. ACarbon
   2. BHydrogen
   3. CNitrogen
   4. DOxygen
   5. EPhosphorus
   6. FSulfur
9. 9What are the 3 types of bonds? C[blank_start]ovalent[blank_end] , I[blank_start]onic[blank_end] H[blank_start]ydrogen[blank_end]

   1. Aovalent
   2. Bonic
   3. Cydrogen
10. 10Define Covalent bond: [blank_start]Sharing[blank_end] of electrons between atoms.

    1. ASharing

11. 11What is matter? It is a [blank_start]physical[blank_end] substance that takes up [blank_start]space[blank_end].
    

    1. Aphysical
    2. Bspace
12. 12Define element: Pure form of [blank_start]matter[blank_end] containing only one kind of [blank_start]atom[blank_end].
    

    1. Amatter
    2. Batom
13. 13Hydrogen bonds

    1. AA) are stronger than either ionic or covalent bonds.
    2. BB) form between a slightly positively charged hydrogen atom
       and a slightly negatively charged atom nearby.
    3. CC) maintain the shape of proteins and DNA.
    4. DD) b and c
14. 14What is glucose's atomic formula? [blank_start]C6H12O6[blank_end]

    1. AC6H12O6
15. 15Define Valence Electrons: Electrons in the [blank_start]outmost[blank_end] shell.

    1. Aoutmost
16. 16Define Molecule: A stable association between two or more [blank_start]atoms[blank_end] formed by [blank_start]covalent[blank_end] bonding.

    1. Aatoms
    2. Bcovalent
17. 17Define Compound: Forms from [blank_start]electrostatic[blank_end] attraction among many bonded [blank_start]ions[blank_end].

    1. Aelectrostatic
    2. Bions
18. 18Law of conversation of mass: Matter is neither [blank_start]created[blank_end] nor [blank_start]destroyed[blank_end] in [blank_start]chemical[blank_end] reactions.

    1. Acreated
    2. Bdestroyed
    3. Cchemical
19. 19Nitrogen's atomic number is 7 and atomic mass is 14.

    1. AVerdadero
    2. BFalso
20. 20Review of the 3 bonds: Ionic is the [blank_start]transferring[blank_end] of electrons. Covalent is the [blank_start]sharing[blank_end] of electrons. And Hydrogen is a slight attraction between an already [blank_start]covalently[blank_end] bind hydrogen and [blank_start]electronegative[blank_end] atom.

    1. Atransferring
    2. Bsharing
    3. Ccovalently
    4. Delectronegative
21. 21What is pH? Concentration of [blank_start]H+[blank_end] in a solution. Often referred to as '[blank_start]acidity[blank_end]' of a solution

    1. AH+
    2. Bacidity
22. 22What are Buffers? They yield or accept [blank_start]H+[blank_end]

    1. AH+
23. 23Which solution has highest concentration of H+ ions?

    1. ApH 0.000001
    2. BpH 10 ^ -6
    3. CBoth
    4. DNone of the above
24. 24What is Acid Disposition "Acid Rain": Air [blank_start]pollution[blank_end] formed when SO2+NOx reacts with [blank_start]H20[blank_end] forming acid. Acid then falls in fog, rain, and snow.

    1. Apollution
    2. BH20
25. 25What is Carbon? It is the backbone [blank_start]element[blank_end] of life. They make up to 4 [blank_start]covalent[blank_end] bonds. Carbon has unique [blank_start]electron[blank_end] configurations (4 [blank_start]valence[blank_end] electrons).

    1. Aelement
    2. Bcovalent
    3. Celectron
    4. Dvalence
26. 26Define Carbohydrates: They are sugar, starches, etc. They are [blank_start]energy[blank_end] sources [blank_start]molecules[blank_end].

    1. Aenergy
    2. Bmolecules
27. 27What are simple carbohydrates?

    1. AMonosaccharides and disaccharides
    2. BSugar or cholesterol
    3. Cbread or wheats
    4. DAll the above
    5. ENone of the above
28. 28Monosaccharides is [blank_start]one[blank_end] sugar. Examples such as [blank_start]glucose[blank_end] and [blank_start]fructose[blank_end] and its carbon formula is [blank_start]C6H12O6[blank_end].

    1. Aone
    2. Bglucose
    3. Cfructose
    4. DC6H12O6
29. 29Disaccharides is [blank_start]two[blank_end] sugar. Examples are l[blank_start]actose[blank_end] or s[blank_start]ucrose[blank_end].

    1. Atwo
    2. Bactose
    3. Cucrose
30. 30Complex carbohydrates is called [blank_start]polysaccharides[blank_end], also called '[blank_start]many[blank_end] sugars.' They are made of repeating units of [blank_start]simple[blank_end] sugars.

    1. Apolysaccharides
    2. Bmany
    3. Csimple
31. 31The two above are simple simple sugars called [blank_start]fructose[blank_end] and [blank_start]glucose[blank_end]. And the one below is the two combined called [blank_start]sucrose[blank_end].

    

    1. Afructose
    2. Bglucose
    3. Csucrose
32. 32Define Dehydration Synthesis: It is the 'joining or forming' of monomers. It is also called [blank_start]condensation[blank_end] reaction. The reaction that bonds one monomer covalently to another releases a water molecule (H20), the joining of two monomers and the 3rd monomer create a [blank_start]polymer[blank_end].

    

    1. Acondensation
    2. Bpolymer
33. 33Define Hydrolysis: It is the '[blank_start]separating[blank_end] or breaking' of [blank_start]polymers[blank_end] with water molecule to form two [blank_start]monomers[blank_end].

    1. Aseparating
    2. Bpolymers
    3. Cmonomers
34. 34Define Lipids: They are 'fat, oil, wax.' They are [blank_start]insoluble[blank_end] in water, also called non-[blank_start]polar[blank_end]. It has a high ratio of H (hydrogen) and O (oxygen). It's major uses are for [blank_start]energy[blank_end], energy storage, and [blank_start]protection[blank_end]. It is a poor conductor ([blank_start]insulation[blank_end]) of heat.

    1. Ainsoluble
    2. Bpolar
    3. Cenergy
    4. Dprotection
    5. Einsulation
35. 35Define Fatty Acids: They are [blank_start]saturated[blank_end] fatty acids and [blank_start]unsaturated[blank_end] fatty acids.

    1. Asaturated
    2. Bunsaturated
36. 36Define Triglycerides: "Tri = 3 [blank_start]fatty[blank_end] acids." They are bound to glycerol (an alcohol). Most common fat consumed in food.

    1. Afatty
37. 37What makes up a phospholipid? [blank_start]Hydrophilic[blank_end] head and [blank_start]hydrophobic[blank_end] tails

    

    1. AHydrophilic
    2. Bhydrophobic
38. 38Define Phospholipid bilayer: A layer made up of phospholipids in the [blank_start]plasma membrane[blank_end] encasing a cell and separating internal and external [blank_start]watery[blank_end] environment.

    

    1. Aplasma membrane
    2. Bwatery
39. 39What are the functions of a protein? It t[blank_start]ransport[blank_end], p[blank_start]rotect[blank_end], and c[blank_start]ommunicate[blank_end].

    1. Aransport
    2. Brotect
    3. Communicate
40. 40Proteins are structures made up of one or more smaller units called [blank_start]peptides[blank_end], then form bigger proteins.

    1. Apeptides
41. 41Protein Structure": Primary - Sequence of [blank_start]amino acid.[blank_end] Secondary - Bending and coiling of amino acid chain. Tertiary - 3 dimensional folding that produce the shape of [blank_start]protein[blank_end]. Quaternary - Attractive forces between two or more [blank_start]subunits[blank_end].

    1. Aamino acid.
    2. Bprotein
    3. Csubunits
42. 42Define Enzymes: Proteins that speed up [blank_start]chemical reactions[blank_end] - thousands of times faster.

    1. Achemical reactions
43. 43How does ATP gives off energy? A: The bond between one of the [blank_start]pentoses[blank_end] is broken to release [blank_start]energy[blank_end] and then form back to [blank_start]ADP[blank_end]

    

    1. Apentoses
    2. Benergy
    3. CADP
44. 44Define Nucleotides : Small [blank_start]molecules[blank_end] important for energy transfer of [blank_start]cell[blank_end] and storage and transmit of [blank_start]genetic[blank_end] information

    1. Amolecules
    2. Bcell
    3. Cgenetic
45. 45What does a Nucleotide contain? A: P[blank_start]hosphate[blank_end], P[blank_start]entose[blank_end] sugar, and N[blank_start]itrogen[blank_end] containing sugar.

    1. Ahosphate
    2. Bentose
    3. Citrogen
46. 46What are nucleotide's bases? Hint: A-T and C-G. A: A[blank_start]denine[blank_end], G[blank_start]uanine[blank_end], C[blank_start]ytosine[blank_end], and T[blank_start]hymine[blank_end]

    1. Adenine
    2. Buanine
    3. Cytosine
    4. Dhymine

Descripción

100 Biol 100 Test sobre Ch.2 - Chemistry , creado por Thuriya Sai el 16/09/2015.

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Thuriya Sai

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Creado el 16 sep 2015 · actualizado el 19 feb 2016

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