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Chemistry (A&P I)
pearson study modules
Terms in this set (27)
What is true concerning atomic weight?
Atomic weight is the average of the mass numbers of all the isotopes of an element.
Which of the following statements is true concerning the structure of atoms?
An atom loses the unique properties of its element when it is split into its subatomic particles.
Which of the following is true of an isotope?
Isotopes have the same number of protons, but differ in the number of neutrons they contain.
What is the most common element in the body?
Which subatomic particles are equal in atomic mass?
Protons and neutrons
Which statement is incorrect concerning radioisotopes?
Ionizing radiation damages tissue by directly damaging organic molecules.
Match the following: Smallest particle of a compound that still retains its properties
Which statement is true?
Solutions, colloids, and suspensions are all present within a human being.
Which of the following is true of concentrations of solutions?
One mole of any substance always contains exactly the same number of solute particles, that is, 6.02 x 1023. This number is called Avogadro's number.
Match the following: A type of bond that holds different parts of a single large, molecule together into a three-dimensional structure
Which of the following is incorrect regarding true solutions?
True solutions are usually opaque due to the number of solutes dissolved in the solution.
Which of the following is true concerning the rates of chemical reactions?
Chemical reactions progress most rapidly when the reacting particles are present in high numbers because their chance of successful collisions is greater.
Buffers tend to prevent dramatic changes in the pH when __________ are added to a solution.
proton donors or proton acceptors
When a cell is placed in a solution that is more concentrated, water will leave the cell and the cell will shrink. What will happen to the rate of intracellular chemical reactions in this situation?
The rate of chemical reactions will speed up.
Which of the following is not a property of water?
Water can easily split into its component parts of H and OH in order to balance acid in the body.
Which of the following is not true of DNA?
DNA carries out the orders for protein synthesis issued by RNA.
Match the following: Fatty acids with more than one double bond between carbon atoms
Which of the following is the storage carbohydrate of animal tissues?
The important cholesterol-based molecules are __________.
Match the following: Steroids
Which of the following incorrectly matches a macromolecule with its building blocks?
Nucleic acids to DNA
Match the following: Eicosanoids
Match the following: Fatty acids with all single bonds between carbon atoms
Prostaglandins are __________.
An organic compound is analyzed, and it has twice as many hydrogen atoms as oxygen atoms. This compound is most likely a __________.
Disaccharidases hydrolyzing disaccharides is an example of which type of proteins?
Select the major energy fuel for forming adenosine triphosphate (ATP).
carbs, particularly glucose
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