Task Bio Molecules

CHAPTER 1.  BIOMOLECULES

NAME:   Nurul Fahriah   NIM:  091 404 185

  D_1. Which of the following is Not one of the four most common elements found in living organisms?
a) hydrogen    b) oxygen     c) carbon     d) sulfur    d) nitrogen

_D_2. Organic molecules are those that contain at least
a) carbon                                       c) carbon and oxygen
b) carbon and hydrogen                d)  carbon, oxygen, and hydrogen

 _A_5. A polysaccharide is a polymer made up of which kind of monomers?
a) simple sugars
b) amino acids
c) nucleotides
 d)fatty acids and glycerol

_D_6. A lipid is a polymer made up of which kind of monomers?
a) amino acids                                                     c) nucleotides
b) alternating sugar and phosphate groups            d) fatty acids and glycerol  

_D_8. Which pair are both structural carbohydrate molecules?
a) starch and glycogen
b) starch and cellulose
c) glycogen and cellulose
d) cellulose and chitin
e) glycogen and chitin

_C_9. Which carbohydrate is found in the cell walls of plants?
a) starch    b) chitin    c) cellulose    d) glycogen    e) glycerol

_D_13. Which of the following lipids form a bilayer between two watery regions, such
as the plasma membrane of a cell?
a) steroids    b) neutral fats    c) waxes    d) phospholipids

_B_16. A protein is a polymer made up of which kind of monomers?
a) glucose and modified glucose molecules
b) amino acids
c) nucleotides
d) fatty acids and glycerol

_D_17. A peptide bond is found in which type of biological molecule?
a) carbohydrate    b) lipid    c) nucleic acid    d) protein

_B_18. The alpha helix and beta sheet are found at which level of protein organization?
a) primary structure    b) secondary structure    c) tertiary structure    d) quaternary structure

_B_19. A nucleic acid is a polymer made up of which kind of monomers?
a) amino acids
b) nucleotides
c) glucose or modified glucose molecules
d) alternating sugar and phosphate groups
e) fatty acids and glycerol

_D_20. Which of these statements is Not true about DNA?
a) It is the genetic material of the cell.
b) It forms a double helix.
c) Adenine pairs with thymine and guanine pairs with cytosine.
d) It contains the sugar ribose.
e) The sugar and phosphate groups form the backbone of the molecule.

_B_21. Which statement is true about RNA?
a) It contains adenine paired to thymine.
b) One of the bases from DNA is replaced by uracil.
c) It contains the sugar deoxyribose.
d) Its nucleotides contain twice as many phosphate groups as DNA's nucleotides.
e) It is a double stranded molecule.

_C_23. The difference between one amino acid and another is found in the
a) amino group    b) carboxyl group    c) R group    d) peptide bond   e) carbon atoms

_E_25. Nucleotides
a) contain a sugar, a nitrogen containing base, and a phosphate molecule
b) are the monomers for fats and polysaccharides
c) joined together by covalent bonding between bases
d) are present in both DNA and RNA
e) Both a and d are correct.

_C_27. Which of the following is Not associated with carbohydrates?
a) amylase    b) cellulose    c) pepsin    d) chitin    e) insulin

_A_28. The union of glycerol and fatty acids to form fat is an example of what kind of reaction?
a) endergonic reaction   b) exergonic reaction   c) dehydration reaction   d) hydrolysis reaction   e) redox reaction

_D_29. Which of the following is Not a compound composed of glucose?
a) chitin     b) glycogen    c) starch    d) glucagon    e) cellulose

_D_32. During a chemical reaction, the loss of an electron from an atom or molecule is termed
a) reduction    b) cellular respiration    c) kinetics    d) oxidation    e) metabolism

_E_34. Adenine, a nitrogen base, is found in all of the following Except
a) RNA    b) DNA    c) ATP    d) AMP    e) amino acids

_A_35. A reaction that breaks down compounds by the addition of water is known as a
a) hydrolysis reaction   b) dehydration reaction   c) endergonic reaction   d) exergonic reaction   e) redox reaction

_D_36. Which of the following is Not a lipid?
a) steroids    b) fats    c) phospholipids    d) glycogen    e) cholesterol

_B_38. Polymers of sugars are called
a) proteins    b) polysaccharides    c) fats and oils    d) nucleic acids    e) polypeptides

_B_39. Large molecules that are composed of repeating units of small molecules are called
a) monomers    b) polymers    c) repeaters    d) macrophages    e) polycarbonates

_E_40. Polymers of amino acids are called
a) starches    b) polysaccharides    c) fats and oils    d) nucleic acids    e) polypeptides

_A_42. The small repeating units of large molecules are called
a) monomers    b) polymers    c) repeaters    d) macrophages    e) polycarbonates

_D_43. Polymers of nucleotides are called
a) starches    b) polysaccharides    c) fats and oils    d) nucleic acids    e) polypeptides

_B_44. An example of a polypeptide is
a) table sugar    b) protein    c) olive oil    d) cellulose    e) corn starch

_A_45. The most predominant component of biological membranes are
a) lipids    b) sugars    c) nucleic acids    d) starches    e) oils

_E_46. The biological functions of molecules are determined by their
a) shapes
b) charge distributions
c) ability to interact with water
d) structures
e) All of the above.

_B_53. The most important simple sugar in almost all living organisms is
a) sucrose    b) glucose    c) fructose    d) starch    e) cellulose

_C_54. Choose the one item from the following lists is Not one of the parts of a nucleotide.
a) ribose    b) deoxyribose    c) lipid    d) nitrogenous base    e) phosphate

_A_57. The amino acid sequence of protein is the level of protein structure called the ____ structure.
a) primary    b) sequential    c) secondary    d) quaternary    e) tertiary

_D_58. The three-dimensional arrangement of the polypeptide chains that compose the protein is the
level of protein structure called the _____ structure.
a) primary    b) sequential    c) secondary    d) quaternary    e) tertiary