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WorksheetsBiomolecules Chapter 2
Total questions: 38
Worksheet time: 25mins
Which of the following is represented in the image?
Nucleotide
Carbohydrate
Lipid
Protein
What is a function of carbohydrates?
To provide energy to living organisms
The provide the structure in muscles
Providing insulation
Storing your genetic information
What is the best definition of the function of nucleic acids?
They contain defense mechanisms against bacteria
They contain the information that makes you and makes you different from every other living thing
They are used as the structural components of the body (muscles and organs)
They create the cell membrane
Which of the following is a carbohydrate?
DNA
Protein
Sugars
Fats
Which of the following is NOT a lipid?
Fats
Oils
Waxes
Proteins
What is a pure substance that cannot be broken down into simpler substances by physical or chemical means?
Compound
Molecule
Element
Atom
What is the smallest particle of an element that retains the chemical identity of an element?
Compound
Molecule
Element
Atom
Is this compound ionic or covalent?
ionic
covalent
If an atom has no charge, which of the following must be true?
It has more neutrons than protons or electrons.
There are only neutrons inside the atom.
Its number of protons is equal to its number of electrons.
The neutrons in the atom outnumber the electrons and protons.
Isotopes of an element have a different number of...
Protons
Neutrons
Electrons
Mass
Which of the following biomolecules is correctly paired with its function?
Carbohydrates - long-term energy storage
Cell membrane - build muscle
Nucleic acids - growth maintenance
Lipids - long-term energy storage
Which of the following macromolecules is correctly paired with its function?
Protein - short-term energy storage
Nucleic acids - genetic information (DNA/RNA)
Lipids - speed up chemical reactions
Lipids - short-term energy storage
Letter "A" represents the ___________
Prokaryote
Active site
Product
Substrate
Letter "B" and "D" represent the ___________
Substrate
Active site
G2 phase
Enzyme
A ________ blocks the substrate so it can't attach/catalyze.
Competitive inhibitor
Carbohydrate
Active site
Activation energy
A ___________ changes the shape of the enzyme so the substrate can't attach/atalyze
Product
Non-competitive inhibitor
Hypotonic
Competitive inhibitor
Enzymes can be affect by: (select all that apply)
Temperate
Isotonic solution
pH
Amount of substrate
Letter "E" represent the __________
Phospholipids
Active site
Products
Enzyme
An ___________ is a type of protein that speeds up a chemical reaction in a living thing by lowering their activation energy.
Dog
Cell Cycle
Substrate
Enzyme
Most human enzymes operate under an optimal pH near neutral. Which pH range would best represent this environment?
1-3 pH
4-5 pH
6-8 pH
10-14 pH
The optimal pH for Trypsin is:
1.5
5
7.3
8.2
The optimal pH for Pepsin is:
1.5
5
7.3
8.2
A ________ is the reactant on which an enzyme works.
Enzyme
Products
Substrate
Enzyme-Substrate Complex
When an enzyme binds to its substrate, it forms:
Enzymes
Enzyme-Substrate Complex
Mitochondria
Activation energy
What is the significance of nucleic acids for cells?
They generate energy for the cell.
They provide all instructions for cellular activities.
They restrict what enters and leaves the cell.
They support and maintain the shape of the cell.
An enzyme works optimally at a pH between 1 and 3.
Which best explains what will happen to this enzyme at a pH of 10?
It will work on the same substrate as it did at a pH range of 2–4, but it will not work as well.
It will work on a different substrate than at a pH range of 1–3.
It will lose its original shape and work on new substrates.
It will lose its original shape and not work on any substrate at all.
_________ is the minimum amount of energy required to start a chemical reaction
Substrate
Products
Activation energy
Enzyme
_________ is the region of an enzyme that attaches to a substrate.
Enzyme
Non-competitive competitor
Enzyme-Substrate Complex
Active site
