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WorksheetsBio Chapter 2 Test (2025-2026) Biochemistry
Total questions: 15
Worksheet time: 8mins
A covalent bond is formed as the result of ________.
transferring electrons.
sharing electrons.
transferring protons
sharing protons
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
A solution is a _______.
combination of isotopes
chemical reaction
mixture in which the substances are evenly spread out
mixture in which undissolved substances do not settle out
A substance with a pH of 6 is called _____
an acid
a base
water
a suspension
Solutions that have more OH- than H+ ions are ____.
reactants
acids
bases
enzymes
What are the attractions between water molecules called?
covalent bonds
ionic bonds
Van Der Waals interactions
hydrogen bonds
This molecule is what type of macromolecule?
lipid
carbohydrate
protein
nucleic acid
Enzymes will make a reaction go ______ and use ______ energy
faster, more
slower, less
slower, more
faster, less
Waxes, oils and fats are examples of _____
lipids
proteins
carbohydrates
nucleic acids
In what way do changes in pH and temperature affect enzyme function?
They have no effect on enzyme function
They enhance enzyme activity consistently
They alter the shape and function of enzymes
They deactivate enzymes completely
Which of the following makes up a molecule of water?
one atom of hydrogen and one atom of oxygen
one atom of sodium and one atom of chlorine
one atom of hydrogen and two atoms of oxygen
two atoms of hydrogen and one atom of oxygen
Which of the following properties of water enables it to move from the roots to the leaves of plants?
Water expands as it freezes.
Water is an excellent solvent.
Water exhibits cohesive behavior.
Water moderates temperature.
Amino acid is to protein as ____ .
fat is to lipid.
DNA is to RNA.
sugar is to fat.
glucose is to carbohydrate.
What is the name of large molecules that are made up of many small subunits?
monomer
reactant
polymer
monosaccharide
Why are lipids insoluble in water?
lipids are non polar
lipids are polar
lipids have a negative charge
lipids are the building blocks of proteins
