WorksheetsBio Water and Macromolecules Quiz
Total questions: 20
Worksheet time: 5hrs 0mins
1. Water molecules are polar, with the
oxygen side being slightly positive and the hydrogen side being slightly negative
oxygen and hydrogen sides being slightly positive.
oxygen and hydrogen sides being slightly negative.
oxygen side being slightly negative and the hydrogen side being slightly positive.
Why does ice float in liquid water?
The liquid water molecules have more kinetic energy and thus support the ice.
The ionic bonds between the molecules in ice prevent the ice from sinking.
Ice always has air bubbles that keep it afloat.
Hydrogen bonds stabilize and keep the molecules of ice farther apart than the water molecules of liquid water.
The crystalline lattice of ice causes it to be denser than liquid water.
Based on your knowledge of the polarity of water molecules, the solute molecule is most likely
positively charged.
negatively charged.
without charge.
hydrophobic.
nonpolar.
1. The unique attractive forces that keep molecules of water together are called:
strong forces.
adhesion.
hydrogen bonds
cohesion.
weak nuclear forces.
The property of water whereby molecules tend to stick to one another is called:
cohesion
polarity
dissolving ability
adhesion
viscosity
1. The property of water whereby molecules tend to stick to objects is called:
cohesion
polarity
dissolving ability
adhesion
viscosity
1. Water is unique because its solid phase is ____ the liquid phase.
denser than
similar to
less dense than
less dense than or similar to
none of these
1. Which of the following compounds would NOT be classified as a carbohydrate?
Starch
Glucose
Enzymes
Cellulose
Deoxyribose
1. Carbohydrates are made of carbon, hydrogen and oxygen atoms. What is the typical ratio of these atoms to each other?
3:1
1:2:1
2:2:2
4:2:4
9:3:3:1
1. Which of the following is not a lipid?
Oil
Fat
Glycerol
Monosaccharide
Triglyceride
Mixture that can react with an acid or a base without affecting the pH is a(n) ____________
buffer
acid
base
polymer
Carbon compound joined by peptide bonds; building block of proteins are ____________________
amino acids
nucelic acids
nucleotides
proteins
Combination of two or more substances in which each substance maintains its own individual characteristics is called a(n) _______________
acid
base
mixture
solution
Large molecules formed by joining smaller organic molecules together
macromolecule
polypeptide
nucleotide
protein
Substance that releases hydroxide ions (OH-) when dissolved in water is a(n) _____________
acid
base
nucleic acid
amino acid
A monomer of nucleic acid consisting of: a simple sugar, phosphate group, and a nitrogen base is called a(n)
acid
base
nucleotide
amino acid
Large molecule formed from smaller, identical compounds linked by covalent bonds is called a(n) _________________
monomer
polymer
peptides
nucleotides
Measures the concentration of hydrogen ions (H+) in a solution is ______________
pH
H+
OH-
none of these
Organic compound made mostly of carbon and hydrogen; includes fats, oils, and waxes is a ____________
monosaccharide
carbohydrate
lipid
proyein
______________ is a weak attraction formed by the opposite charges between a hydrogen and oxygen atoms in a water molecule.
hydrogen bond
covalent bond
ionic bond
nuclear bond
