ch 03
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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)
People with lactose intolera nce do not have enough ______.
1)
______ _ A )
glucose
B)
fructose
C)
lactase
D)
water
E) l a t s e
A single carbon atom can form a maximu m of ______ covalen t bond(s).
2)
______ _ A )
2 3
none; carbon only participates in ionic bonds D)
1 E)
4 3)
The followin g molecul e is best describ ed as a ______. CH3 CH2 CH2 CH2
3)
______ _ A )
ch n cleic a u acid y rdr b at o e
lipid D)
hydrocarbon E)
protein 4)
______ is a hydroxy l group.
4)
______ _ A )
H
B)
SH
C)
NH2
D)
COOH
E) O
In the followin g reaction , galacto se is a ______. galacto se + glucose lactose + water
5)
______ _ A )
m protein o o m n er
polysaccharide D)
polymer E)
lipid 6)
What name is given to the followin g reaction ? galacto se + glucose lactose + water
6)
______ _ A )
g h drolys ol l y y is y si cs
gluconeogene sis D)
dehydration E)
reaction
hydrogenation 7)
What name is given to the followin g reaction ? sucrose + water glucose + fructose
7)
______ _ A )
g a abolis e ln nm u e csi o s g
denaturation D)
hydrolysis E)
dehydration 8)
reaction
Carbohy drates typicall y include ______.
8)
______ _ A )
C a ydroc n , d arbon O h chain H at ,o m a s
a PO4 group D)
a 5-carbon E)
ring
an NH2 group 9)
Which of the followin g are isomers ?
9)
______ _ A )
g l ose n l d a and u c malto fr cu t se o ct so e s e a
sucrose and D)
glucose
sucrose and E)
lactose
glucose and 10)
sucrose
Comple te the equatio n: monosa ccharid e+ monosa ccharid e ______ + water
10)
______ A )
p dsacch pe opti i aride l de y
fat D)
nucleic acid E)
polysaccharide 11)
In the followin g equatio n, lactose is a ______. galacto se + glucose lactose + water
11)
______ A )
f ty dsacch aacii aride td
dipeptide D)
polypeptide E)
nucleic acid 12)
Table sugar is ______.
12)
______ A )
sucrose
B)
lactose
C)
fructose
D)
maltose
E) g l c s e 13)
The consum ption of sugar is a major cause of ______.
13)
______ A )
g t th ut o o deca oy
cancer D)
rheumatoid E)
arthritis
acne 14)
Which of the followin g is an exampl e of a polysac charide ?
14)
______ A )
glucose
B)
sucrose
C)
fructose
D)
maltose
E) s t r h 15)
Animals store carbohy drates as ______.
15)
______ A )
glucose
B)
maltose
C)
glycogen
D)
starch
E) c e l l o 16)
Cellulos e is an exampl e of ______.
16)
______ A )
fat f iber
a polypeptide D)
a steroid E)
a nucleic acid 17)
Which of the followin g is hydroph ilic?
17)
______ A )
cles t toste h e rone ter ool s
polyunsaturat ed fatty acids D)
cellulose E)
butter 18)
Someti mes when I have my morning coffee, which I drink black with no sugar, I notice a thin film floating on top of the coffee. Since I have just read Chapter 3 of the text, I now realize the nature of this substan ce and so I run to my friend screami ng, "Look at this ______ in my coffee!"
18)
______ A )
n e zyme le u n oti cde
hydrophobic substance D)
glucose E)
hydrophilic 19)
substance
A glycerol with three fatty acids attache d is referred to as a ______.
19)
______ A )
p ncleic ag rla uacid ond sin t
protein D)
fat E)
steroid 20)
What name is given to the followin g reaction ? glycerol +3 fatty acids triglycer ide + 3 water molecul es
20)
______ A )
h hroge rol yysi y natio d dn s
catabolism D)
dehydration E)
reaction
denaturation 21)
Saturat ed fats are saturate d with ______.
21)
______ A )
n posph ro i ge horus tn
carbon D)
hydrogen E)
oxygen 22)
By definitio n, what type of fatty acid has double bonds?
22)
______ A )
sur s eroid aat t ted
unsaturated D)
triglyceride E)
monoglyceride 23)
Which of the followin g is lowest in unsatur ated fats?
23)
______ A )
corn oil
B)
beef
C)
salmon
D)
trout
E) c a o a 24)
A fat that is hydroge nated is ______.
24)
______ A )
m l ikely un osa e to rturs caus eat s e ed strok l es
more solid D)
likely to go E)
bad faster
easier to 25)
digest
Which of the followin g is a health effect of a diet high in saturate d fats?
25)
______ A )
i ri i rease n nd life sk cof c span rhe eart aatt sac ek d
decreased risk of stroke D)
decreased risk of atherosclerosis E)
increased 26)
blood flow
______ is a steroid.
26)
______ A )
A Etroge no m sn aci id
Butter D)
Unsaturated E)
fat
Sucrose 27)
A friend of yours appears to have put on a lot of muscle very quickly. At the same time, you notice that your friend seems to have a lot of mood swings and appears depress ed. It is reasona ble for you to suspect that your friend has begun to take ______.
27)
______ A )
aid a nabol m nic su i pp steroi n ad le om en ats c
creatine D)
protein E)
powder
lipids 28)
Enzyme s are ______.
28)
______ A )
f ts m osacc a o harid nes
steroids D)
phospholipids E)
proteins 29)
Proteins are polymer s constru cted from ______ monom ers.
29)
______ A )
h 5arbo oc yar - n d c ring bo rn
fatty acid D)
nucleotide E)
amino acid 30)
Amino acids include a side group as well as ______.
30)
______ A )
atro a n, a ge hydr cn c ogen eat e atom n n, a o tm, t hydr ra r oxyl ahy a grou l dr l p, ox c and a h a carbo yl ygr r nyl d bgrou ou rp, o p oan g d ea n ca , rb on ayl gr n ou ip
a central D)
nitrogen, a carbon atom, an amino group, and a carbonyl group
a central E)
carbon, a hydrogen atom, an amino group, and a carboxyl group
a central 31)
hydrogen, a nitrogen atom, an amino group, and a carboxyl group
What is the name given to the reaction that breaks peptide bonds?
31)
______ A )
h ddrati og yen e on d hreacti ati ron y on
denaturation D)
hydrolysis E)
anabolism 32)
The linear sequen ce of amino acids in a polypep tide chain is referred to as its ______ structur e.
32)
______ A )
p t rtiary m rar e iy
quaternary D)
secondary E)
pentamerous 33)
A protein' s function is depend ent on its ______.
33)
______ A )
size weight
temperature D)
shape E)
pH 34)
Destruc tion of a protein' s shape is called ______.
34)
______ A )
arat hroge io y natio d dn n ere h ac ytio d n
denaturation D)
hydrolysis E)
anabolism 35)
Nucleic acids are polymer s of ______ monom ers.
35)
______ A )
m DNA ac och n ari ode s
hydrocarbon D)
fatty acid E)
nucleotide 36)
A specific stretch of DNA that progra ms the amino acid sequen ce of a polypep tide is a ______.
36)
______ A )
p ncleic tei rn uacid o
nucleotide D)
gene E)
enzyme 37)
DNA nucleoti des include ______.
37)
______ A )
u t, in re, hguani aad y ne, cen m adeni i in i ne, l e, nand , an e uracil d g cy u to asin n e
thymine, D)
uracil, adenine, and cytosine
thymine, E)
guanine, uracil, and cytosine
thymine, 38)
guanine, adenine, and cytosine
Which of the followin g is true with regard to a DNA molecul e?
38)
______ A )
Ta T is h hequal m eou e to nt the aof a amou m m of gu nt oan o thymi u une, in n nand e, tan t the d amou oth o nt of f e f guani a ne is am a equal d dto ou ent e the n namou of i th i nt of n nuracil y emi e . ne i is seq ua el q to u th ae la m tou ont of tcy h to esin e.
The amount of equal to the amount of cytosine, and the amount of guanine is equal to the amount of adenine is thymine. D)
The amount of equal to the amount of thymine, and the amount of guanine is equal to the amount of adenine is cytosine. E)
The amount of equal to the amount of guanine, and the amount of thymine is equal to the amount of adenine is uracil. 39)
If one strand of a DNA double helix has the sequen ce AGTACT G, what will be the sequen ce of the other strand?
39)
______ A )
G ATACT AT TGAGG C
TCATGAC D)
CTACAGT E)
GACGTCA 40)
How does RNA differ from DNA?
40)
______ A )
R I pairs a N nwith mi A no T; in aciRDNA i ds NG s; Apairs D with aNAGC. is p a opo l ly ym m er eof rnu cle ooti f de s.
RNA contains uracil; DNA contains thymine. D)
RNA is double- stranded; DNA is single-stranded. E)
RNA contains 41)
one less OH than does DNA.
The ability to tolerate lactose through out life is most likely to be seen in ______.
41)
______ A )
cth EAsian u a popul at l ke s ation tep t s u da riry ehe srd s
Native D)
Americans
populations E)
that live in cold climates
populations 42)
that live in wet climates
Examin e the two sugars in the followin g figure. How do these two sugars compar e?
42)
______ A )
Fas T the rm hsame u e form or ce y ula thy but odr hdiffer sog a ent een v struc . e tures h .
Glucose has more double bonds. D)
Glucose has E)
more hydrogen.
They are 43)
structurally identical in every way.
The figure below shows
43)
______ A )
D RNA NA
protein D)
secondary structure
denaturation E)
hydrolysis 44)
The figure below shows ______.
44)
______ A )
ae a ngle str stran san s d of i d i DNA n of g RN lA
doubleD)
stranded RNA
doubleE)
stranded DNA
none of the
above
Please read the following scenario to answer the following question(s). While shopping, you settle on two types of cookies. The nutritional label for the chocolate mint cookies lists 5 grams of saturated fat, 0 grams of trans fat, 22 grams of carbohydrates, and 11 grams of protein per serving. The nutritional label for the peanut butter cookies lists 0 grams of saturated fat, 5 grams of trans fat, 26 grams of carbohydrates, and 4 grams of protein per serving. 45)
Which cookies are less healthy ?
45)
______ A )
Tok T ter h hcooki ies ebe e es ca beca cus puse h e they e oth a conta cey nin oco umore l nt t gram aai s of tn bcarbo em uhydr or t ates. m e i sa n tur tat ed cfat o.
The chocolate mint cookies because they contain more protein. D)
The peanut E)
butter cookies because they contain more trans fat.
The chocolate mint cookies because they contain more total grams of protein and carbohydrates. 46)
The manufa cturer of the chocola te mint cookies change d the ingredie nts of its cookies. Each serving now has 1 gram of saturate d fat (4 fewer grams), 4 grams of trans fat (4 more grams), 21 grams of carbohy drates (1 fewer gram), and 11 grams of protein (no change) . Do you think that the manufa cturer made these cookies healthie r?
46)
______ A )
Yhe Ne ey o they sno , now , w bhave ha e more b c gram ve eles a s of cs utrans asa s fat. u tur sat eed fat t.
No, because the number of proteins was not changed. D)
No, because E)
they now have less saturated fat.
Yes, because
they now have fewer grams of carbohydrates.
1)
C 2)
E 3)
D 4)
E 5)
A 6)
D 7)
D 8)
A 9)
A 10)
B 11)
B 12)
A 13)
B 14)
E 15)
C 16)
B 17)
D 18)
C 19)
D 20)
D 21)
D 22)
C 23)
B 24)
C 25)
A 26)
B 27)
B 28)
E 29)
E 30)
D 31)
D 32)
A 33)
D 34)
C 35)
E 36)
D 37)
E 38)
D 39)
C 40)
C 41)
A 42)
B 43)
C 44)
B 45)
D 46)
B
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