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Biology Definitions

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

What is the definition for Monomer?

a)

a molecule that can be bonded to other identical molecules to form a polymer.

b)

a substance that takes part in and undergoes change during a reaction.

c)

the species formed from chemical reactions.

d)

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

2.

What is the definition for Product?

a)

any of the class of sugars that cannot be hydrolyzed to give a simpler sugar.

b)

a complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.

c)

a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.

d)

the species formed from chemical reactions

3.

What is the definition for pH Scale

a)

small molecules that are the building blocks of proteins.

b)

a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.

c)

used to specify the acidity or basicity of an aqueous solution.

d)

large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

4.

What is the definition for Protein?

a)

large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

b)

a complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.

c)

used to specify the acidity or basicity of an aqueous solution.

d)

a molecule that can be bonded to other identical molecules to form a polymer.

5.

What is the definition for Nucleic Acid

a)

small molecules that are the building blocks of proteins.

b)

large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

c)

a complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.

d)

a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.

6.

What is the definition for Polymer

a)

a substance that takes part in and undergoes change during a reaction.

b)

a substance that has a molecular structure consisting chiefly or entirely of many similar units bonded together.

c)

a molecule that can be bonded to other identical molecules to form a polymer.

d)

any of the class of sugars that cannot be hydrolyzed to give a simpler sugar.

7.

What is the definition for Reactant?

a)

a substance that takes part in and undergoes change during a reaction.

b)

the species formed from chemical reactions.

c)

small molecules that are the building blocks of proteins.

d)

any of the class of sugars that cannot be hydrolyzed to give a simpler sugar.

8.

What is the definition of Amino Acid?

a)

large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

b)

any of the class of sugars that cannot be hydrolyzed to give a simpler sugar.

c)

a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.

d)

small molecules that are the building blocks of proteins.

9.

What is the definition for Nucleotide?

a)

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

b)

any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents.

c)

a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.

d)

used to specify the acidity or basicity of an aqueous solution.

10.

What is the definition for Lipid?

a)

any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents.

b)

a molecule that can be bonded to other identical molecules to form a polymer.

c)

a substance that takes part in and undergoes change during a reaction.

d)

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.