WorksheetsBiological Molecules
Total questions: 20
Worksheet time: 20mins
What are the four biological molecules?
proteins, carbohydrates, lipids, nucleic acids
water, air, earth, and fire
A, T, C, G
protein, amino acid, thymine, and fat
A biological polymer that stores and transmits genetic information is a ...
nucleic acid
lipid
carbohydrate
protein
A biological polymer made of amino acid monomers is a
protein
carbohydrate
lipid
nucleic acid
A group of organic molecules that includes sugars, starch, and cellulose care called...
proteins
nucleic acids
carbohydrates
lipids
What are the monomers of a polysaccharides?
Amino Acids
Glycerols
Nucleotides
Monosaccharides
Monomers of nucleic acid consist of:
phosphate group
deoxyribose (sugar)
polypeptide
nitrogen-base
A large molecule made up of many similar or identical subunits.
lipids
monomer
polymer
monosaccharide
A class of biological molecules whose defining characteristic is their relative insolubility in water. Examples of these include steroids, oils, fats, and fatty acids.
protein
lipids
monomer
glycogen
What two molecules make up a lipid?
glycogen
glycerol
amino acid
fatty acid
What is the function of starches in plants and glycogen in animals?
Stored energy in cells
Speed up chemical reactions
Structure for cell
as hormones
What element is found in proteins but NOT carbohydrates?
Carbon
Nitrogen
Hydrogen
Oxygen
Which of the following is NOT a function of proteins
Enzymes: speed up chemical reactions
Transport: movement of molecules into/out of cells
Energy: stored energy in cells
Structure: provides shape to cells and tissues
A sample of egg albumen (protein) solution was tested using the biuret test. Which one shows the result of the test and the deduction which can be made?
A
B
C
D
Which food substance would produce a brick red precipitate when boiled with Benedict’s solution?
fat
reducing sugar
protein
starch
Which of the following best describes a DNA molecule?
double helix
made of amino acids
contains ribose
contains Guanin
Which 2 molecules form the sides (backbone) of the DNA ladder?
deoxyribose sugar and adenine
deoxyribose sugar and the nucleus
deoxyribose sugar and a hydrogen bond
deoxyribose sugar and phosphate
Cytosine always pairs with
Adenine
Uracil
Thymine
Guanine
Which of the following is a base pair?
Adenine - Cytosine
Deoxyribose - Cytosine
Adenine - Thymine
Adenine - Guanine
Nitrogenous bases are joined by which type of bond?
polar bonds
covalent bonds
ionic bonds
hydrogen bonds
Cytosine - Guanine are connected by
2 hydrogen bonds
2 covalent bonds
3 hydrogen bonds
3 covalent bonds
