Quiz: Chapter 3 - Biological Molecules

1 Terpenes are polytorpenes made up of:

Terpenes Carotenoids Steroids All of these

2 Which RNA is involved in peptide bond formation during protein synthesis?

mRNA tRNA rRNA All of these

3 Where are chlorophyll pigments located in the cell?

Mucoids Lipoprotein Cerebrosides Nucleoprotein

4 Which type of protein is found in egg albumin and gonadotropins?

Glycoproteins Lipoprotein Glycolipids Nucleoprotein

5 Where are glycolipids found?

Mitochondria Endoplasmic reticulum Nucleus All of these

6 What is the most abundant biomolecule on Earth?

Mineral salts Proteins Lipids Carbohydrates

7 Which trioses are intermediary in both respiration and photosynthesis?

Glyceraldehydes Dihydroxyacetone Both A and B None of these

8 Which compound gives a red color with iodine?

Cellulose Chitin Glycogen Starch

9 A phospholipid has a phosphate group attached to which compound?

Amines Choline Chitin None of these

10 The remaining cell mass after water evaporation is called:

Biomolecules Dry Weight Wet Weight All of these

11 DNA and RNA are examples of:

Linear branched polymers Linear unbranched polymers Made of three nucleotides None of these

12 Maltose and lactose are examples of:

Non-reducing sugars Reducing sugars Both A and B None of these

13 A reducing sugar can be ______ and causes ______ of other substances.

Reduced; Hydrolysis Oxidized; Reduction Oxidized; Hydrolysis Reduction; Oxidized

14 What is the molecular formula of stearin (glyceryl tristearate)?

C55H110O5 C57H110O6 C57H110O5 C57H210O6

15 Which compounds have high energy content?

Water Lipids Mucoids Both B and C

16 Which component has the same percentage in bacterial and mammalian cells?

Lipids Carbohydrates Protein Water

17 The bond between -OH of one amino acid and -H of another is:

Phosphodiester Glycosidic Peptide bond Hydrogen bond

18 Which structural level is most common in globular proteins?

Primary Secondary Tertiary Quaternary

19 How much energy is released when ATP converts to ADP?

7.3 Kcal/mole 31.81 KJ/mole 7.3 KJ/mole Both A and B

20 Which lipid is made of glycerol, two fatty acids, choline, and phosphate?

Triglycerides Phospholipids Waxes Cholesterol

21 The most abundant reserve food in higher plants is:

Starch Cellulose Glycogen None of these

22 Glucose is found in all except:

Ripe fruit Honey Sweet corn All of these

23 The force of attraction between similar molecules is:

Cohesive force Adhesive force Cohesion force Both A and C

24 Which sugars are crystalline, sweet, and water-soluble?

Monosaccharides Oligosaccharides Polysaccharides Both A and B

25 Which compound is a polytarpene with isoprenoid units?

Prostaglandins Steroids Carotenoids DNA

26 Which molecule acts as a co-enzyme in redox reactions?

DNA RNA NAD Pyrimidine

27 Which terpenoid forms a steroid nucleus?

Carotenoids Nucleic acids Steroids All of these

28 Which RNA is most abundant in animal cells?

mRNA tRNA miRNA rRNA

29 Which sugars are most important biologically?

Heptose Hexose Glucose Triose

30 If DNA sequence is ATTGCC, the RNA sequence would be:

ATTGCA UGGACC UAACGG ATCGCC

31 How many water molecules hydrolyze a 21-monomer polymer?

5 10 15 20

32 Which are also known as cerebrosides?

Lipoprotein Glycolipids Nucleon Glycoproteins

33 Which molecules act as transport proteins and receptors?

Mucoids Cerebrosides Lipoproteins Glycoproteins

34 Anticodon is present in:

DNA tRNA rRNA mRNA

35 A tri-hydroxy alcohol made of three carbons is:

Glucose Glycerol Maltose Ribose

36 The tendency of water to coalesce oil droplets is called:

Hydrophilic force Hydrophobic exclusion Hydrophilic exclusion Hydrogen bonding

37 Which sugars are rare but found in some bacteria?

Pentose Hexose Tetrose Heptose

38 Which lipids are produced during tissue damage?

Phospholipids Prostaglandins Steroids Carotenoids

39 Amylose is characterized by:

1-4 glycosidic bonds 1-6 glycosidic bonds Double in hot water Most abundant carbohydrate

40 A nucleotide with "hot" phosphate is called:

DNA RNA Nucleoside Nitrogenous base

41 Macromolecules made of subunits are called:

Building blocks Polymers Monomers Both A and C

42 Which substance is abundant in liver and muscles?

Starch Chitin Glycogen None

43 Actin and myosin are:

Globular proteins Fibrous proteins Both None

44 Amylopectin has:

1-4 bonds 1-6 bonds Nourishes embryo Digestive enzyme

45 Who proposed the term "lipid"?

1843 1942 1943 1840

46 The calorie to raise 1g water by 1°C is:

Specific Heat of Vaporization Specific Heat Capacity Caloric Heat Both A and C

47 Triglycerols are ______ in nature.

Amphoteric Neutral Acidic Basic

48 Which contains double bonds in hydrocarbon chains?

Fats Oils Stearin All

49 Chitin is a structural component of:

Fungal walls Insect exoskeletons Crustacean shells All

50 An average person stores ~16kg fat, providing:

144×10³ KCal 14×10³ KCal 144×10⁵ KCal None

51 Which compound is used in rubber synthesis?

Steroids Prostaglandins Chlorophyll Terpenes

52 Cholesterol is a precursor for:

Testosterone Estrogens Both Chlorophyll

53 Which drugs inhibit prostaglandin synthesis?

Acetaminophen Aspirin Both None

54 The bond linking nucleotides is:

Ester Phosphodiester C-C Glycosidic

55 Specific heat of vaporization of water is:

574 Kcal/kg 774 Kcal/kg 674 Kcal/kg 874 Kcal/kg

56 Which nucleic acid contains uracil?

DNA RNA Both None

57 Which carbohydrate is most abundant in animals?

Starch Glycogen Cellulose None

58 Linolin in seeds is an example of:

Saturated acylglycerol Unsaturated acylglycerol Waxes All

59 Codons are found in:

tRNA rRNA mRNA All

60 Antibodies are:

Globular Fibrous Both None

Leave Quiz?

Chapter 3: Biological Molecules