Potential Matches

Place the number of the corresponding item next to the number of the correct order from lowest (1) to highest (8) pH: (Points : 8)


Potential Matches:
1 : Stomach Acid
2 : Normal Rain Water
3 : Lemon Juice
4 : Urine
5 : Tomatoes
6 : Bread
7 : Hydrocloric Acid
8 : Soda



     : 1 (lowest)
     : 2
     : 3
     : 4
     : 5
     : 6
     : 7
     : 8 (highest)




Place the corresponding number of the title of each atom part location next to the correct letter of that location:  https://lh3.googleusercontent.com/JvnF9cwaXLWfm2VGAI6qqzd6r9oRicymIGv380lTCv4G3E1n9HHA9G7_amG4aPzXSq37=s112  (Points : 7)



Potential Matches:
1 : Electrons
2 : Mass Number
3 : Neutrons
4 : Atomic Number
5 : Atomic Symbol
6 : Nucleus
7 : Protons



     : A
     : B
     : C
     : D
     : E
     : F
     : G



An atom has a central ____________. (Points : 1)


energy        nucleus        orbit        shells        particles

An atom has pathways about the nucleus called ____________. (Points : 1)

shells        particles        energy        nucleus        orbit

The shells of an atom are sometimes called ___________ levels. (Points : 1)

nucleus        energy        particles        orbit        shells

Subatomic ____________ called protons and neutrons are located in the nucleus. (Points : 1)

orbit        particles        shells        energy        nucleus

Electrons ____________ about the nucleus in the shells. (Points : 1)

particles        orbit        nucleus        shells        energy

Particles that carry either a positive (+) or negative (-) charge are termed ______________. (Points : 1)

ionic        electrons        oppositely        ions        covalent        stable

The attraction between ____________ charged ions forms an ionic bond. (Points : 1)

electrons        ionic        stable        oppositely        ions        covalent

Atoms with more than one shell are most stable when the outer shell contains eight ____________. (Points : 1)

oppositely        covalent        electrons        ionic        ions        stable

Sometimes during a reaction, atoms give up or take on electrion(s) in order to achieve a ___________ outer shell. (Points : 1)

electrons        covalent        stable        ionic        ions        oppositely

In a ___________ bond, atoms share electrons instead of losing or gaining them. (Points : 1)

covalent        ions        stable        oppositely        ionic        electrons

Ionic bonds are created by ________________ between ions. (Points : 1)

electrical attraction        sharing of electrons

Covalent bonds are created by __________________ between atoms. (Points : 1)

electrical attraction        sharing of electrons

In a covalent bond, atoms share electrons instead of losing or gaining them. (Points : 1)

True         False

In a covalent bond, protons spend part of their time in the outer shell of each atom; therefore, they are counted as belonging to both bonded atoms. (Points : 1)

True         False

Which of the following statements are TRUE? (select all that apply) (Points : 1)

In water, electrons spend more time circling the oxygen atom          Water makes up about 40-50% of the total body weight          Water is not the most abundant molecule in living organisms          Water is an inorganic molecule because it does not contain hydrogen atoms          Water is polar molecule with negative and positive ends

When ions and molecules disperse in water, they move about and collide, allowing ______________ to occur.  Therefore, water is a solvent that facilitates ______________ reactions.  Ions and molecules that are water-soluble are said to be ______________. Non-ionized and non-polar molecules that do not interact with water are said to be ___________________. (Points : 1)

reactions, chemical, hydrophilic, hydrophobic        reactions, hydrophilic, chemical, hydrophobic        reactions, chemical, hydrophobic, hydrophilic        reactions, hydrophobic, chemical, hydrophilic

Hydrophilic means “water-loving”. (Points : 1)

True         False

Hydrophobic means “water-loving”. (Points : 1)

True         False

Water molecules cling together because of ________________, a property called ________________.  Water can also cling to other surfaces by hydrogen bonding, and this behavior is called ______________.  The cohesion and adhesion characteristics of water make it an excellent ______________ medium. (Points : 1)

hydrogen bonding, cohesion, adhesion, transport        hydrogen bonding, adhesion, cohesion, transport        transport, adhesion, cohesion, hydrogen bonding        transport, cohesion, adhesion, hydrogen bonding

Water flows freely and water-based solutions fill vessels, such as _____________ vessels. Blood transports ____________ and nutrients to the _________ and ____________ wastes such as carbon dioxide from the cells. (Points : 1)

hydrogen, cells, blood, cleans        blood, oxygen, cells, removes        transport, hydrogen, cells, brings

Specific ____________ is the amount of heat energy needed to change an object’s temperature by exactly 1 C. Water has the highest specific heat of almost any ____________ in nature.  Water can absorb a tremendous amount of heat energy without changing its ______________ due to the ____________ bonds that link water molecules together. (Points : 1)

heat vaporization, substance, form, oxygen        heat capacity, liquid, temperature, oxygen        heat capacity, substance, temperature, hydrogen

Maintaining a fairly _________________ body temperature is possible, in part, because the body is roughly 60% water.  High water content helps to ____________ the body from ______________ heat and cold in the environment.  Hydrogen bonding also accounts for water’s _____________________. (Points : 1)

constant, insulate, extreme, high heat of vaporization        hydrated, insulate, constant, heat capacity        constant, hydrate, constant, high heat of vaporization

The following are considered ACIDS: (select all that apply) (Points : 1)

HCI–> H+ + CI-          substances that take up hydrogen ions          substances that disccociate in water          (HCI)          ammonia          release of hydrogen ions (H1)          Milk of magnesia

The pH scale ranges from _____ to _____.  Any solution with a pH below 7 is considered _______. Even a ______ change in pH represents a _______ change in the proportional number of hydrogen and hydroxide ions in the body. (Points : 1)

1, 14, acidic, large, small        0, 7, basic, small, large        0, 14, acidic, small, large        0, 14, basic, small, large

The pH of our blood when we are healthy is always about ______. If the pH value drops below ________, the person is said to have ___________. If our pH rises above _________, the condition is called ________________. (Points : 1)

7.4, 7.35, acidosis, 7.45, alkalosis        7.4, 7, acidosis, 7.45, alkalosis        7, 7.4, alkalosis, 7.35, acidosis

Explain the pH scale by filling in the blanks on the following statements: The pH scale ranges from _______ to ______. A solution of exactly pH ______ is the pH of water. (Points : 1)

14, 7, 0        7, 14, 0        0, 14, 7

pH 7, the pH of ___________ is a neutral pH because water releases an ___________ number of hydrogen ions (H+) and hydroxide ions (OH-). (Points : 1)

water, exact        hydrogen, equal        hydrogen, exact        water, equal

Place the number of the item next to the number of its order from lowest (1) to highest (8) pH: (Points : 8)


Potential Matches:
1 : Stomach Antacids
2 : Human Blood
3 : NaOH
4 : Milk
5 : Tears
6 : Oven Cleaner
7 : Ammonia
8 : Milk of Magnesia



     : 1 (lowest)
     : 2
     : 3
     : 4
     : 5
     : 6
     : 7
     : 8 (highest)




The four categories of molecules unique to cells are: __________, __________, __________, and __________. (Points : 1)


carbon, nitrogen, proteins, and lipids        carbohydrates, lipids, proteins, and nucleic acids        nucleic acids, oxygen, nitrogen, and hydrogen        hydrogen, carbohydrates, lipids, and nucleic acids

A HYDROLYSIS REACTION consists of the following (select all that apply): (Points : 1)

Removing an OH (hydroxyl group) and an –H (hydrogen atom) – the equivalent of a water molecule – to form a molecule          Functions to break up macromolecules          Decomposition of a macromolecule          “splitting with water”          Functions in the synthesis of macromolecules

Which of the following are individual subunits of CARBOHYDRATES (select all that apply): (Points : 1)

fats          oils          polypeptide          steroids          starch          cellulose          glycogen

Which of the following are individual subunits of PROTEINS (select all that apply): (Points : 1)

DNA          enzymes          hormones          hemoglobin          myosin          actin          RNA          collagen          nucleotides

Which type of carbohydrates named below, function in cells to provide IMMEDIATE ENERGY? (select all that apply): (Points : 1)

pasta          fructose          turnips          galactose          broccoli          potatoes          glucose

A fat or an oil forms when one _____________ molecule reacts with three fatty _________ molecules.  A fat is sometimes call a ______________ because of its three-part structure, or a ____________ fat because the molecule is non-polar and carries no __________. (Points : 1)

neutral, glycerol, carbon, combine, charge        glycerol, acid, triglyceride, neutral, charge        carbon, acid, triglyceride, combine, water

Fatty acids can be saturated if there are double bonds between ________ atoms, or unsaturated if there are double bonds between carbon atoms.  When a fat molecule forms, three fatty acids __________ with glycerol, and three ________ molecules are produced. (Points : 1)

neutral, combine, carbon        glycerol, charge, triglyceride        carbon, combine, water

Lipids contain more energy per gram than carbohydrates (Points : 1)

True         False

Some lipids function as short-term energy storage molecules in organisms (Points : 1)

True         False

Which of the following statements are TRUE? (Points : 1)

Fat is used for short-term energy usage          Fat forms a protective cushion around major organs          Steroids have an entirely different structure from fats          Phospholipids are the backbone of cellular membranes          Fat insulates against heat gain

Which of the following statements are FALSE? (select all that apply) (Points : 1)

enzymes are proteins          myosin is a protein          collagen is not a protein          many hormones are proteins          antibodies are not proteins          keratin is not a protein

Think of DNA as a “blueprint” – a set of instructions for assembling and entire building.  Using this example, RNA would be the ____________, made from the blueprint, describing how to put beams ___________ to make a wall.  The nucleotides in DNA contain the 5-carbon sugar ____________; the nucleotides in RNA contain the sugar __________.  This difference accounts for their respective __________. (Points : 1)

plan, up, sucrose, ribose, names        directions, together, deoxyribose, ribose, names        cell, in, glucose, ribose, functions

Match the number of the correct term to the letter of its location within the following sentence:    The nucleotides in DNA contain the 5-carbon sugar ___A____; the nucleotides in RNA contain the sugar _____B____.  There are four different types of bases in DNA: A = _____C___, T = _____D______, G = ____E_____, and C = _____F_____.  In RNA, the base ______G_______ replaces the base thymine. (Points : 7)


Potential Matches:
1 : uracil
2 : adenine
3 : ribose
4 : thymine
5 : guanine
6 : cytosine
7 : deoxyribose



     : A
     : B
     : C
     : D
     : E
     : F
     : G
Nucleic acids contain ____________ information that determines which ____________ a cell will have.  Two classes of nucleic acids are in cells: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). DNA makes up the hereditary units called ____________. Genes pass on from generation to generation the instructions for ____________ DNA, making RNA, and ____________ amino acids to form the ____________ of a cell.  RNA is an intermediary in the process of protein synthesis, conveying information from DNA regarding the amino acid ____________ in proteins. (Points : 1)


hereditary, proteins, genes, replicating, joining, proteins, sequence        protein, sequence, genes, joining, insides, sequence        hereditary, sequence, genes, completing, forming, proteins, replication

Which of the following statements are TRUE? (select all that apply) (Points : 1)

Cells require an occasional supply of ATP to carry out their functions.          Adenosine triphosphate is the primary energy carrier in cells.          Energy released from the breakdown of food fuels cellular reactions and warms the body at the same time.

Which of the following statements are FALSE? (select all that apply) (Points : 1)

In muscle cells, ATP is used for muscle contraction.          Cells do not require ATP energy to synthesize macromolecules.          All body cells use ATP energy to inhibit their various functions.

Match the following Chapter 02 “BASIC KEY TERMS” with their correct definitions: (Points : 10)


Potential Matches:
1 : organic compounds with general formula, including sugars and glycogen .
2 : polysaccharide very abundant in plant tissues that human enzymes cannot break down.
3 : number of protons and electrons an atom of an element has when the element is electrically neutral.
4 : a metal ion, vitamin, or other substance that acts with an enzyme to bring about certain effect.
5 : base solution in which pH is more than 7; a substance that contributed or liberates hydroxide ions in a solution; alkaline; opposite of acid.
6 : substance or compound that prevents large changes in pH of a solution
7 : unit of a protein that takes its name from the fact that it contains an amino group and an acid g
8 : the molecular attraction exerted between the surfaces of bodies in contact
9 : solution in which pH is less than 7; substance that contributes or liberates hydrogen ions in a solution; opposite of base.
10 : molecule used by cells when energy is needed



     : ATP
     : Acid
     : Buffer
     : Adhesion
     : Atomic number
     : Amino acid
     : Base
     : Cofactors
     : Cellulose
     : Carbohydrate





Match the following Chapter 02 “BASIC KEY TERMS” with their correct definitions: (Points : 10)



Potential Matches:
1 : the simplest of substances, consisting of only one type of atom
2 : breaking up of fat globules into smaller droplets by the action of bile salts
3 : small, negatively charged particle that revolves around the nucleus of an atom
4 : any substance that ionizes and conducts electricity; electrolytes are present in the body fluids and tissues.
5 : unit of heredity located on a chromosome
6 : protein catalyst that speeds up a specific reaction or a specific type of reaction
7 : in a covalent molecule, the atom that tend to retain electrons and thus posses a partial negative charge.
8 : molecule that contains a hydrocarbon chain and ends with an acid group
9 : in an organic molecule, a particular side chain attached to a larger molecule, which then gives the larger molecule its characteristic properties
10 : organic molecule that the body uses for long-term energy storage



     : Emulsification
     : Electronegative
     : Electrons
     : Fats
     : Functional groups
     : Gene
     : Elements
     : Electrolyte
     : Enzyme
     : Fatty acid



Match the following Chapter 02 “BASIC KEY TERMS” with their correct definitions: (Points : 10)


Potential Matches:
1 : three-carbon molecule that joins with fatty acids to form fat
2 : polysaccharide that is the principal storage compound for sugar in animals
3 : amount of energy needed to turn water into steam
4 : type of molecule that interacts with water by dissolving in water and/or forming hydrogen bonds with water molecules
5 : splitting of a bond by the addition of water
6 : type of molecule that is not an organic molecule; not derived from a living organism
7 : blood sugar that is broken down in cells to acquire energy for ATP production
8 : type of molecule that does not interact with water because it is nonpolar
9 : weak attraction between a partially positive hydrogen and a partially negative oxygen or nitrogen some distance away; found in proteins and nucleic acids
10 : six-carbon sugar



     : Glycogen
     : Hydrogen bond
     : Hexose
     : Hydrophilic

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