Beckers World of the Cell: chapter 3, Cell Biology Beckers World of the Cell Chapter 5
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Course
Beckers World of the Cell: chapter 3, Cell Biolog
Institution
Beckers World Of The Cell: Chapter 3, Cell Biolog
Beckers World of the Cell: chapter 3,
Cell Biology Beckers World of the Cell
Chapter 5
Beckers World of the Cell: chapter 3,
Cell Biology Beckers World of the Cell
Chapter 5
Beckers World of the Cell: chapter 3,
Cell Biology Beckers World of the Cell
Chapter 5
Beckers World of the Ce...
Beckers World of the Cell: chapter 3,
Cell Biology Beckers World of the Cell
Chapter 5
1) Which of the following is a nonpolar (hydrophobic) amino acid? - ANSWER A) valine
(valine is nonpolar and hydrophobic)
10) Based on the following amino acid sequence, which region(s) is/are hydrophobic?
1[K-K-N-Q] - 2[A-G-G-V] - 3[Y-C-S-R] - 4[H-E-C-Y]
A) region 2
B) region 4
C) region 1
D) region 3
E) both regions 1 and 3 - ANSWER A) region 2
(region 2: Alanin, Glycin, Valin: group A)
11) Which of the following is an example of a defensive protein?
A) keratin
B) cell surface receptor
C) antibody
D) myosin
E) hormone - ANSWER C) antibody
12) Cellulose belongs to which of the following groups of macromolecules? - ANSWER B)
carbohydrates
13) To which of the following classes of sugars does glucose belong? - ANSWER A) hexose
(hexa = 6)
14) Which of the following is a disaccharide? - ANSWER A) lactose
(lactose = galactose + glucose)
15) Which of the following is not a polysaccharide? - ANSWER D) extensin
, Beckers World of the Cell: chapter 3,
Cell Biology Beckers World of the Cell
Chapter 5
(extinsin = protein in cellwall)
16) Which of the following is not a characteristic of DNA? - ANSWER E) contains ribose
17) The chemical nature of each amino acid is determined by which of the following groups? -
ANSWER B) R
18) The nucleoside triphosphate molecules in DNA are linked together in the 5'→3' by a(n) ________
bridge. - ANSWER D) phosphodiester
(phosphodiester)
19) Which of the following is a purine?
A) cytosine
B) guanine
C) thymine
D) cysteine
E) uracil - ANSWER B) guanine
(purine: adenine and guanine)
(pyrimidines: thymine, uracil, cytosine)
(cysteine = amino acid)
2) Which of the following does not represent the correct pairing of the three-letter abbreviation with
the one-letter abbreviation of an amino acid? - ANSWER B) arg-A
(arginine = R)
(arginin blir arrrrrrrrg:-)
20) Fibrous proteins have extensive ________ structure, which allows them to be highly ordered and
repetitive. - ANSWER A) secondarya
(f.ex. keratin, collage, elastin)
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