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33 Multiple choice questions
Term 1 of 33
Which of the following solvents are lipids insoluble in?
Water
Dichloromethane
Ethanol
Chloroform
Water
A lipid is defined as a molecule that is insoluble in water, but that is soluble in organic
solvents such as ethanol, chloroform, and dichloromethane. Because of this, lipids are
considered hydrophobic.
Mole
As you can see in the chart above, the SI Unit to measure the amount of a substance is the
mole and is generally used to represent atoms.
The kilogram is the SI base unit of mass, while a meter is the SI base unit of length.
A gram is an SI unit of mass, but note that it is not a base unit. The base unit for mass is the
kilogram.
Electron
Beta particles are high-energy, high-speed electrons that are emitted from an atomic
nucleus. Beta decay can also emit a positron, and this is called β+ decay.
Metallic bond
Metallic bonds hold metal lattices together and are an intramolecular force. Other
examples of intramolecular forces are covalent bonds and ionic bonds. The other options
are intermolecular forces that determine how other molecules interact with one another.
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Term 2 of 33
Which of the following is emitted during beta decay?
Neutron
Proton
Nucleus
Electron
Electron
Beta particles are high-energy, high-speed electrons that are emitted from an atomic
nucleus. Beta decay can also emit a positron, and this is called β+ decay.
Water
A lipid is defined as a molecule that is insoluble in water, but that is soluble in organic
solvents such as ethanol, chloroform, and dichloromethane. Because of this, lipids are
considered hydrophobic.
(CH2O)n
Carbohydrates are molecules that are made up of carbon, hydrogen, and oxygen. In the
general formula, n can be any number between 3 and 8.
Glycogen (the only one that doesn't end with -ose)
A simple sugar (also called a 'monosaccharide') is a sugar whose molecules cannot be
hydrolyzed any further into smaller sugars. Glycogen is a polysaccharide, which is
composed of numerous glucose molecules.
Term 3 of 33
Which of the following is represented by the atomic number of an element?
An element's number of electrons
An element's number of protons
An element's number of neutrons
An element's atomic mass
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Term 4 of 33
What is the name given to a positively-charged atom?
Anion
Cation
Mole
Electron
Term 5 of 33
How many total amino acids are needed for the human body to produce all the proteins it needs?
20
10
11
9
Metallic bond
Metallic bonds hold metal lattices together and are an intramolecular force. Other
examples of intramolecular forces are covalent bonds and ionic bonds. The other options
are intermolecular forces that determine how other molecules interact with one another.
20
Amino acids, which contain an amine and a carboxylic acid, are needed by the body to
produce proteins. There are 20 amino acids that the body needs for protein synthesis, and
they are grouped into two categories: essential and non-essential.
Mole
As you can see in the chart above, the SI Unit to measure the amount of a substance is the
mole and is generally used to represent atoms.
The kilogram is the SI base unit of mass, while a meter is the SI base unit of length.
A gram is an SI unit of mass, but note that it is not a base unit. The base unit for mass is the
kilogram.
Nonpolar compound
A dipole occurs when there is an unequal sharing of electrons between two atoms in a
molecule. In the dipole, there will be both a partially - positive and a partially-negative
side. The more electronegative atom will be on the partially-negative side since it will be
able to attract more electrons to itself.
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