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WorksheetsBiology Chemistry of Life
Total questions: 38
Worksheet time: 37mins
__________ are macromolecules that are able to transfer information from one parent to offspring.
Carbohydrates
Proteins
Lipids
Nucleic acids
___________ is the property that makes water able to dissolve many compounds.
Polarity
High boiling point
Neutral
High melting point
___________ are the monomers of the protein molecules.
Nucleic acids
Amino acids
Monomers
Nucleotides
What is the function of enzymes?
Quick energy
Movement
Serve as thermal insulator
Speeding up biochemical reactions
_________ functions as energy storage molecule in mammalian muscles.
Starch
Glucose
Glycogen
Cellulose
Which of the following statements is true regarding hydrogen bonds?
A hydrogen bond is stronger than an ionic bond.
A hydrogen bond has the same strength as a covalent bond.
The attraction between the hydrogen atom of one water molecule and the oxygen atom of another water molecule is an example of a hydrogen bond.
All of the above.
The process which changes chemical substances into others is a_____________________.
chemical bond
chemical reaction
chemical equation
chemical formula
Which category of organic compound is the major component of cell membranes?
Carbohydrate
Lipid
Protein
Nucleic acid
Which of the following is the best description of a covalent bond?
Two atoms sharing electrons so they can complete their outer (valence) shells.
The constant movement of electrons and the creation of charge imbalances which bonds two molecules together.
A proton is attracted to the electronegativity of another atom.
An atom loses one or more electrons to another atom.
Carbon has an atomic number of 6, in nature you can find C-14, how many neutrons do you find in it ?
7
6
9
8
The diagram above represents a fat molecule.
A fat molecule belongs to which category of organic molecules?
Protein
Nucleic acids
Carbohydrate
Lipid
Which of the following is a primary function of carbohydrates?
storage of energy
transmission of genetic material
acceleration of chemical reactions
transport of molecules across membranes
If scientists search other planets for possible life, they are likely to focus on the presence of molecules containing which of the following elements?
Lithium
Calcium
Carbon
Potassium
Name the 2 subatomic particles have the same mass.
Protons
Electrons
Neutrons
A compound does not have definite proportions.
True
False
Ionic bonds share electrons
true
false
If an atom gains an electron, it will then have a ______ charge.
positive
negative
no change
Which of the following elements is Not one of the six most common in living organisms?
carbon
oxygen
iron
nitrogen
hydrogen
When two unlike substances are attracted by hydrogen bonding it is called ________________.
adhesion
cohesion
polarity
polypeptide
When two like substances are attracted by hydrogen bonding it is called ________________.
adhesion
cohesion
polarity
polypeptide
The pH of an acid is ______________.
less than 7
less than or equal to 7
greater than 7
greater than or equal to 7
The pH of a base is ______________.
less than 7
less than or equal to 7
greater than 7
greater than or equal to 7
Reactant to which an enzyme binds.
Carbohydrates
Substrate
Catalyst
Active Site
Enzymes are an example of
Lipids
Carbohydrate
Protein
Nucleic Acid
Which is the correct set of acid properties:
sour taste, corrosive, change litmus from red to blue
sour taste, corrosive, change litmus from blue to red
sweet taste, slippery, change litmus from blue to red
sour taste, slippery, change litmus from blue to red
NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?
Acid
Base
Neither (Neutral)
This type of solutions tastes bitter.
Acids
Bases
None of the following
Acids & Bases
The ability of water molecules to stick to each other, creating surface tension is called:
Cohesion
Adhesion
Insulation
Ph
The fact that water can stick to other substances is called:
Ph
Adhesion
Cohesion
Insulation
