WorksheetsBiology - Chapter 6 Review - Biochemistry
Total questions: 58
Worksheet time: 29mins
Special molecules that are or were once in living things and always contain carbon and hydrogen are known as __ molecules
organic
inorganic
polymer
monomer
When the monomers repeat over and over again, a(n) ________ is created.
organic molecule
inorganic molecule
polymer
DNA
The organic molcule which includes fats, waxes, oils, and cholesterol ________
carbohydrates
lipids
nucleic acids
proteins
An organic molcule made up of amino acids that is important in creating enzymes and is involved in nearly every bodily function is ___
carbohydrates
lipids
nucleic acids
proteins
The organic molecule is important is transmitting genetic information and is known as _.
carbohydrates
lipids
nucleic acids
proteins
The organic molelcul important for short term energy storage and contains carbon, hydrogen, and oxygen elements at a ration of 1:2:1 are called ______.
carbohydrates
lipids
nucleic acids
proteins
Elements will join other elements so that there are eight ___ electrons or electrons found in the outermost shell.
inner shell
lower energy
valence
higher energy
If there are two or more different elements that combine a(n) _______ has been created.
atom
element
molecule
compound
f there are two or more elements that may be the same or different but are bonded by a covalent bond, a(n) _________ has formed.
element
compound
molecule
hydrogen bond
When elements bind together, they go through a chemical reaction. This can be written as a chemical equation. If the elements or compounds are written on the left side of the arrow, they are known as ___________
reactants
products
activation energy
catalyst
In a chemical reaction, ________are written on the right side of the arrow.
Reactants
Products
Activation enzymes
Catalysts
The energy required for a chemical reaction to occur is known as ___________ energy.
starter
activation
heat
chemical
_________ is anything that has mass and takes up space
Proton
Electron
Matter
Neutron
The building blocks of matter are ______.
atoms
protons
neutrons
electrons
The positively charged particle that makes up an atom is _____.
a quark
an electron
a neutron
a proton
The neutrally charged particle of an atom found in the nucleus is ______.
an electron
a quark
a neutron
a proton
The part of the atom where protons and neutrons are located is _____.
the electron cloud
the nucleus
the subatomic space
all of the options listed
The negatively charged particles of an atom are _____.
electrons
neutrons
quarks
protons
A chemical property which will cause water to break down into hydrogen ions is ____.
oxidization
flammability
pH
light sensitivity
Atoms that have a charge - such as a positive or negative charge are called _____, like H+.
ions
protons
neutrons
electrons
If a substance, like HCl, tends to increase the number of H+ ions when placed in water, it is considered _____.
a base
an acid
a buffer
none of the options listed
If a substance tends to decrease the number of H+ ions if added to water, such as NaOH, this is known as ______.
a base
an acid
a buffer
none of the options listed
A substanced that can be added to an acid or base to neutralize it is known as ______.
a base
a buffer
an acid
a catalyst
Elements of the same type that have the same number of protons and neutrons but a different number of neutrons are called _____.
electrons
isomers
isotopes
enzymes
Special proteins in the body that act as biological catalysts are known as ____.
lipids
saturate fats
amino acids
enzymes
Enzymes act as _______, speeding up the rate of reations by lowering the activation energy.
antagonists
catalysts
protagonists
all of the options listed
The amount of energy needed to start a chemical reaction is known as _______.
activation energy
start up energy
catalyst
enzyme
The molecule or molecules that an enzyme works on is known as a ______.
worker molecule
substrate
catalyst
buffer
The place on the enzyme where the enzyme and the substrate meet is called ____.
the iniation site
the activation site
the active site
the allosteric site
The smaller units that make up larger polymers is known as _____.
molecules
atoms
subunits
monomers
Water is a ______ molecule, meaning that it does not share its electrons evenly and has a slightly positive side and a slightly negative side.
all of the options listed
neutral
polar
bipolar
The bonds that form between various molecules of water due to its polarity are called _______ bonds.
hydrogen
ionic
covalent
electrical
Substances that are combined retain their own properties because the components don't chemically combine are called _____.
elements
compounds
mixtures
ions
Another name for a homogenous mixture is _____.
a solvent
a solution
a suspension
a solute
Water is often a ______ meaning that other things often easily dissolve in it.
solvent
solute
solution
mixture
Substances that get dissolved in water in a mixture are referred to as ______
solvents
solutes
mixtures
compounds
This diagram shows water molecules. Which option correctly identifies the numbers with the things they represent?
1 is a covalent bond
2. is the Hydorgen Atom
3 is a hydrogen bond
4 is the Oxygen atoms
1 is the Hydrogen atom
2 is the Oxygen atom
3 is a covalent bond
4 is a hydrogen bond
1 is Oxygen atom
2 is the hydrogen atom
3 is a covalent bond
4 is a hydrogen bond
1 is Oxygen atom
2 is the hydrogen atom
3 is a hydrogen bond
4 is a covalent bond
When salt is added to water, the salt dissolves in the water creating a mixture with a uniform composition. The salt water is known as a(n) _________.
solution
suspension
compound
element
When H is placed near Cl, the result is HCl. This rearrangement of atoms into a new substance is know as a(n) ____________.
rearrangement
isotope
chemical reaction
covalent bond
In the chemical reaction C6H12O6 + 6 O2 yields 6 CO2 + 6 H2O, the CO2 and H2O are examples of __________.
reactants
products
Carbon-12 and Carbon-14 are examples of _____________.
ionic bonds
compounds
isomeres
isotopes
Look at the substances X + Y. These are the starting substances in a chemical reaction that would be written on the left side of the arrow in a chemical reaction. X + Y are examples of ___________.
reactants
products
activation energy
atoms
When Potassium (K) and chorine (Cl) are mixed together, potassium gives up one of its electrons to chlorine so that both are stable. This cause the potassium and the chlorine to become electrically charged and attracted to each other. This attraction is known as a(n) ___________.
covalent bond
ionic bond
isotope
isomer
Look at the diagram above. Area A shows the minimum amount of energy needed for reactants to form products in a chemical reaction. This is known as ______________
activation energy
reactants
products
substrate
A substance was placed into water. It had a 1.0 x 10 -6 chance of making H+ ions. What would its pH be?
5
6
3
8
When NaCl is mixed into water (H2O), both the water and the salt (NaCl) retain their own properties. The salt water would be an example of a(n) _______________.
ionic bond
covalent bond
chemical reaction
mixture
When glucose (C6H12O6) is mixed with water, the glucose is the substance dissolved by water. The glucose would be known as the ___________.
solute
solvent
reactant
product
Which substance has a one in 10,000 chance of causing H+ ions to be released when added to water?
orange juice
acidic soil
hydrochloric acid
bleach
What type of change is tearing paper into small pieces?
physical
chemical
If medication is crushed, is this a chemical or physical change?
physical
chemical
Is souring milk a physical or chemical change?
physical
chemical
Lightening is what state of matter?
solid
liquid
gas
plasma
Which state of matter has the least amount of energy?
solid
liquid
gas
plasma
If sodium hydroxide is added to water, the temperature will rise. What type of reaction is this?
exothermic
endothermic
Does this graph show an exothermic or endothermic reaction?
exothermic
endothermic
Oxygen has a total of 8 electrons. How many valence electrons does it have?
8
6
2
4
Aluminum has 13 protons and an atomic number of 27. How many neutrons does it have?
13
14
27
0
Which of the following statements is true of carbon?
it along with H make up all organic molecules
it is a very important element to living organismscc
because it needs 4 more electrons, it can form molecules that have long chains and rings
all statements are true
