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biochem quiz

Total questions: 88

Worksheet time: 59mins

Name
Class
Date
1.

the most abundant substance in living system, making up to 70% or more of the weight of the most organism. It has the higher melting point, boiling point, and heat vaporization than most other solvents.

a)

mineral

b)

alcohol

c)

carbohydrates

d)

water

2.

its an electrostatic attraction between the hydrogen atom of 1 water molecule and hydrogen of other is called

a)

isomers

b)

osmosis

c)

hydrogen bond

d)

hydrophobic bond

3.

hydrogen bonds are relatively weak, those in liquid water have a?

a)

hydrophilic

b)

hydrophobic

c)

hydrogen bond

d)

bond dissociation energy

4.

water is a

(a)  

5.

compounds that are easily dissolve in water are called?

a)

water

b)

hydrogen bonds

c)

hydrophilic

d)

hypertonic

6.

Non polar solvents( chloroform, benzene), Polar biomolecules is not easy to dissolve in water are called

a)

hydrophobic

b)

amphitatic

c)

ether

d)

hypertonic

7.

water movement across a semipermeable membrane, important in the life of the most cells?

(a)  

8.

solution of equal osmolarity

(a)  

9.

one with higher parts seen in touch sensitive plants?

a)

non polar molecules

b)

water

c)

polar solvents

d)

hypertonic

10.

molecules that contain a hydrophobic head and hydrophilic tail?

a)

hydrophophilic

b)

amphitatic

c)

hydrogens

d)

oaisis

11.

defined as the groups of atoms w/in a molecule that has a similar chemical properties

a)

function group

b)

functional group

c)

chemical bond

d)

water bonding

12.

organic compound w/ a halogen attached to a carbon (Cl, F,Br, I)

(a)  

13.

organic compound w/a hydroxyl group attached to a carbon atom (OH)?

(a)  

14.

consists of an oxygen atom attached to 2 carbon (c-0-c)

(a)  

15.

contain of an nitrogen atom bonded to a hydrogen (c-N-H)

(a)  

16.

organic compound contain a sulfur bonded to a hydrogen and carbon (c-SH)

(a)  

17.

contains hydrogen atom directly bonded to H AND C (CHO)?

(a)  

18.

A carbonyl group between 2 carbons (c2=0)

(a)  

19.

contains OH group directly bonded to a carbonyl carbon(CO2H)

(a)  

20.

contains O-R group directly bonded to the carbonyl atom (C02)

(a)  

21.

carbonyl group linked by a single bond to a nitrogen atom and either a hydrogen or carbon atom (CN or CH)

(a)  

22.

-s-s- or CH3S-SCH3

(a)  

23.

-s- or ch3ch2Sch3

(a)  

24.

c-c

(a)  

25.

c=c

(a)  

26.

c=-c

(a)  

27.

c===c

(a)  

28.

identified

(a)  

29.

capable of donating?

a)

benzene

b)

conjugate acid

c)

acid

d)

conjugate base

30.

capable of accepting proton?

a)

conjugate base

b)

conjugate acid

c)

base

d)

acid

31.

acid and its conjugate base or a base and its conjugate acid

a)

conjugate acid base pair

b)

conjugate base

c)

conjugate acid of a base

d)

conjugate acid base

32.

species that remains when one proton has been removed from the acid

a)

conjugate acid base

b)

conjugate base of an acid

c)

conjugate pair

d)

acid base pair

33.

result from the addition of a proton to a base

a)

base acid conjugate

b)

conjugate base to base pair

c)

conjugate acid of a base

d)

conjugate acid to acid pair

34.

can act as an acid or a base

a)

amphiteric

b)

ampheteric

c)

amphoteric

d)

amphitiric

35.

product of a molar concentrations of H+ and OH- at a particular temperature?

a)

ion constant

b)

product constant

c)

ion constant of a product

d)

ion product constant

36.

assumed to ionize completely in water

a)

bond strength

b)

conjugate strength

c)

strong acid/base

d)

ph level

37.

the weaker the bond the lesser energy is required to break it v/v

a)

bond strength

b)

buffers

c)

conjugate stability

d)

base strength

38.

strong acids have weak conjugate bases?

a)

bases

b)

acid

c)

ph and pOH

d)

conjugate pair stability

39.

the effect of it are depends on the amount of the acid and conjugate

a)

ph and pOH

b)

Ka and Kb

c)

buffering capacity

d)

bond strength

40.

the formula for ph is -log( H3O+)

a)

true

b)

false

41.

what is the formula for pOH

a)

-log (OH-)

b)

-log(ph^-10)

c)

14-ph

d)

10^-pOH

42.

formula for H3O+ is 10^-ph

a)

true

b)

false

43.

this formula (10^-ph) is use when you are looking for?

(a)  

44.

this formula is use when either ph or pOH is missing

a)

pKw= ph

b)

ph-pOH

c)

pOH + ph

d)

pKW= pH + pOH= 14 at 25C'

45.

buferring formula is pH=pKa + log (A-)/(HA)

a)

false

b)

true

46.

most abundant biomolecules on earth, it has the ability to exist in linear or ring structures?

a)

carbon

b)

energy drinks

c)

carbohydrates

d)

monosaccharides

47.

what are the 3 classifications of carbohydrates

a)

monosacharides, disaccharides, polysaccharides

b)

energy drink, energy supplement, energy bar

c)

ketone, aldose, fructose

d)

sterroids, fats, anomers

48.

write true or false based on the question:

the 5 function of carbohydrates are

  1. 1. source of energy

  2. 2. structural components

  3. 3. coenzyme components

  4. 4. nucleotide component

  5. 5. role in growth and development



(a)  

49.

simple sugars, 3 to 7 carbon atoms, aldehyde or ketone

a)

disaccharides

b)

polysaccharides

c)

monosaccharides

d)

steroids

50.

molecules that have the same molecular formula but different structural formulas

a)

isomers

b)

monomers

c)

anomers

d)

structural isomers

51.

it has the same molecular formula and same order of bonding, but diff. spatial arrangement

a)

enantiomers

b)

stereoisomers

c)

diastereomers

d)

epimers

52.

part of stereoisomers that are non-superimposable mirror image of each other

a)

stereoisomers

b)

monomers

c)

polymers

d)

enantiomers

53.

a pair of stereoisomers that are non superimposable and not mirror image from each other

a)

epimers

b)

anomers

c)

diastereomer

d)

stereisomers

54.

diastereonomers contain more than 1 more chiral center but diff. from each other

a)

anomers

b)

epimers

c)

enantiomers

d)

diastereomers

55.

epimers of a cyclic monosaccharides, differ only in. their configuration of the anomeric carbon

a)

anomers

b)

enimers

c)

epimers

d)

anantiomers

56.

carbohydrates composed of 2 monosaccharides units that are joined by the glycosidic bond (e.g sucrose, maltose,& lactose)

a)

glycosidic bonding

b)

sucrose

c)

altose

d)

disaccharides

57.

formed when one sugar reacts with the anomeric carbon

a)

glycosidic bond

b)

anomers

c)

epimers

d)

maltose

58.

write true or false, types of glycosidic bond

(N glycosidic bond, Nitrogen connects 2 sugar units)

( O glycosidic bond, Oxygen connects 2 sugar units)

(S glycosidic bond, Sulfur atom connects)

(a)  

59.

it covers the bitterness of common drug compounds, table sugar, made of glucose and fructose, served as sweetener in food and beverages

a)

sucrose

b)

maltose

c)

fructose

d)

sacrose

60.

composed of 2 glucose units

(a)  

61.

composed of glucose and galactose, in mammals lactose occurs in mammary tissue, human milk contains 7.5% and cow's milk contains 4.5%

a)

fructose

b)

milk

c)

dairy

d)

lactose

62.

carbohydrates composed of tens of thousands of monosaccharides, most abundant carbohydrates in nature

a)

starch

b)

homopolysaccharides

c)

lactose

d)

polysaccharides

63.

gimme the 3 most abundants polysaccharides

(a)  

64.

2 general types of polysaccharides

a)

homopolysaccharides, and heteropolysaccharides

b)

monosaccharides and disaccharides

65.

storage form in plants, large polymer of glucose sub units, important source of carbohydrates

a)

flour

b)

whey

c)

starch

d)

casssava flour

66.

2 composition of starch

a)

altose and maltose

b)

cellulose and glycogen

c)

amylose and amylopectin

d)

flour and water

67.

diverse group of biomolecules that are insoluble in water and soluble in non polar solvents

a)

acids

b)

fats

c)

vitamins

d)

lipids

68.

3 classifications of lipids

(a)  

69.

these are the 5 biological functions of lipids

structural components of molecule, storage and transport of membrane fuels, sense as thermal insulators in the subcutaneous tissues, serve as chemical messenger in the body, covering for nerve fibers

a)

true

b)

falsee

70.

carboxylic acid, structural components of fats, oils and all other categories of lipids excepts steroids

a)

fats acids

b)

fatty acids

c)

acids fats

d)

omega acids

71.

2 types of fatty acids

(a)  

72.

it has fatty acids and OH, preserved as energgy reserve and structural substance

a)

simple lipids

b)

omega fatty acids

c)

triglycerides

d)

waxes

73.

2 types of simple lipids

(a)  

74.

mixtures of esters of long chain carboxylic acid with long chain alcohol, the function is to prevent water loss in plants and animals

a)

lipids

b)

gel

c)

waxes

d)

honey

75.

composed of an alcohol, fatty acids, & an additional groups

a)

simple lipids

b)

compound lipids

c)

phospholipids

d)

glycolipids

76.

3 types of compound lipids

(a)  

77.

composed of 2 fatty acids, amphiphatic molecule becuase of hydrophobis and hydrophilic

a)

phospholipids

b)

lipoproteins

c)

derived lipids

d)

compound lipids

78.

composed of an alcohol, fatty acids, and carbohydrtaes. maitain membrane stability, acting as receptors, anchors for proteins

a)

phospholipids

b)

glycolipids

c)

proteins

d)

lipids

79.

composed of lipids and proteins, water soluble protein-lipid complexes that transport non polar lipids through blood stream

a)

phospholipids

b)

polylipids

c)

lipolipids

d)

lipoproteins

80.

formed from the hydrolysis or breakdown of simple and compound lipids

a)

glycolipids

b)

derived lipids

c)

compound lipids

d)

steroids

81.

major types of derived lipids

(a)  

82.

composed of 3 ( 6 membered ring), and 1 (5 membered ring) joined together

a)

whey

b)

lipids

c)

steroids

d)

fat acids

83.

group of vitamins dissolve in fat, stored in the body's liver and fatty livers

a)

steroids

b)

acids of fat

c)

fatty acids

d)

triglycerides

84.

what are the 4 fat soluble vitamins

a)

vitamins a,d,e,k

b)

Vitamins b,c,d,e

c)

Vitamins a,b,c,d,

d)

vitamins b,c,d,e

e)

vitamins k,b,c,a

85.

this vitamins is important for the eye and cell growth

a)

vit a

b)

vit b-complex

c)

vit c

d)

vit K

86.

This is good for calcium absorption and bone health

a)

vit k

b)

vit a

c)

vit d

d)

vit b complex

87.

it acts as anti oxidant and protect cells from damage

a)

vit k

b)

vit c

c)

vit e

d)

vit a

88.

this vitamins is good for blood clothing and bone health

a)

vit a

b)

vit b complex

c)

vit k

d)

vit c

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