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WorksheetsChemistry of Life
Total questions: 47
Worksheet time: 27mins
Which organic molecule would a long-distance runner most likely choose to eat two hours before a race?
A protein, because it builds muscle mass.
A lipid because it provides long term energy storage.
A carbohydrate because it releases energy quickly.
A protein, because it transports oxygen into the blood stream.
Monosaccharides are the building blocks of which group of biomolecules?
protein
lipid
carbohydrate
nucleic acid
Which biomolecules transport oxygen and other substances and also form part of most organelles?
Lipids
Carbohydrates
Proteins
Nucleic Acids
Which biomolecules provide quick energy for the cell and also provide materials to build the cell membrane/wall?
Carbohydrates
Proteins
Lipids
Nucleic Acids
Which biomolecules contains your genetic information?
Proteins
Lipids
Carbohydrates
Nucleic Acids
Amino Acids are the monomers of __________.
Nucleic Acids
Proteins
Carbohydrates
Lipids
The monomer of carbohydrates is known as _______.
Amino Acid
Fatty Acid
Nucleotide
Saccharide
Glycerol and fatty acids are the monomers of _________.
Lipids
Carbohydrates
Proteins
Nucleic Acids
Which biomolecules act as energy storage for the cell and also cushions and insulates organs?
Carbohyrdates
Lipids
Proteins
Nucleic Acids
The monomer of Nucleic Acids is known as _________.
Amino Acid
Fatty Acid
Nucleotide
Saccharide
What type of biomolecule contains carbon, hydrogen, oxygen, and nitrogen?
carbohydrate
lipid
nucleic acid
protein
The biomolecule that holds an organism's genetic information is called ___________.
carbohydrate
lipid
nucleic acid
protein
Which of the following is the correct pair of biomolecules and their monomers?
Carbohydrate: Fatty Acids
Protein: Amino acid
Lipid: Nucleotide
Nucleic Acid: DNA
Enzyme is a/an...
carbohydrate
lipid
protein
nucleic acid
What biomolecule serves as structural materials in hair, nails and connective tissues?
protein
lipid
carbohydrate
nucleic acid
Just under an orca's skin lies a thick layer of blubber. Blubber helps insulate a whale from heat loss. Based on this information, which biomolecule is blubber primarily made of?
Lipids
Nucleic Acids
Proteins
Carbohydrates
Enzymes are an example of
lipids
carbohydrates
protein
nucleic acid
What is a substance called if it speeds up a chemical reaction?
reusable
catalyst
specific
fragile
In the diagram, what is letter A?
product
enzyme-substrate complex
substrate
active site
Letter D...
enzyme
active site
substrate
products
Letter B...
substrate
active site
enzyme
products
Letter C...
products
substrate
enzymes
active site
Letter E...
active site
products
substrate
enzyme
An enzyme speeds up a reaction by
raising the activation energy
lowering the activation energy
releasing energy
absorbing energy.
What happens when enzymes are heated to a high temperature?
The shape of the enzyme are changed and it denatures
The enzymes die
The enzymes' amino acid sequence changes
The enzymes remain the same
The smallest particle of an element.
Element
Molecule
Atom
A chemical bond where electrons are shared between two atoms. In this type of bond no ions are. You will find these bonds when carbon bonds to other elements.
Covalent bond
Element
Hydrogen bond
A combination of two or more atoms
Period
Molecule
Atom
Family
A chemical bond between two atoms where one or more electrons are passed from one atom to another. When they give up electrons, each of the atoms should have a filled shell. An example is the sodium chloride bond.
Ionic bond
Hydrogen bond
Element
Covalent bond
What is one way Neutrons are different from electrons?
they both are negative
neutrons have no charge, while electrons have a negative charge
Both are in the nucleus( center of atom)
Electrons are inside nucleus and neutrons are outside the nucleus.
What is the atomic number?
35
18
17
52
How many protons and electrons does this element have?
35
18
17
52
How many neutrons does Chlorine have?
18
17
35
52
How many neutrons does calcium have?
20
40
60
0
Which atoms bond together to create a water molecule?
oxygen and hydrogen
hydrogen and helium
carbon and oxygen
helium and carbon
The water molecule is composed of
1 Hydrogen atom and 2 Oxygen atoms
3 Oxygen atoms
2 Hydrogen atoms and 1 Oxygen atoms
2 helium atoms and 1 Oxygen atom
An electron is found in the nucleus.
true
false
Molecules of the same kind sticking together is called ____. Ex. Trees depend on this for water transport
cohesion
adhesion
thermal heat
The clinging of one substance to another is called ____. Ex. Water in a glass that shows a meniscus.
cohesion
adhesion
thermal energy
The dissolving agent in a solution is the ____.
solvent
solute
solution
A substance that is dissolved in a solution is the ____.
solvent
solute
mixture
If a lemon has a pH of 2 is it ____.
basic
acidic
neutral
The pH scale is used to describe how acidic or basic a solution is.
true
false
Oxygen has a slightly negative charge.
true
false
The hydrogen in a water molecule has a slightly positive charge.
true
false
Water bugs can walk on top of water because ____.
hydrogen bonds create surface tension
the water is ice
the water is a solution with heavy material
evaporative cooling
