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Module 2 Exam
Terms in this set (30)
Which of the following is the major positive ion outside cells?
Which of the following is an example of a suspension?
Which of the following does not describe the ATP molecule?
Choose the statement that is false or incorrect.
A key feature of the body's metabolism is the almost exclusive use of exergonic reactions by the body.
An example of a coenzyme is ________.
riboflavin (vitamin B2)
Which bonds often bind different parts of a molecule into a specific three-dimensional shape?
________ is fat soluble, produced in the skin on exposure to UV radiation, and necessary for normal bone growth and function.
Which of the following is not a role of molecular chaperonins?
act as a biological catalyst
Carbohydrates are stored in the liver and muscles in the form of ________.
In a DNA molecule, the phosphate serves ________.
to hold the molecular backbone together
Which of the following constitutes a long chain of simple sugars?
Which of the following is not true of proteins?
They appear to be the molecular carriers of the coded hereditary information.
Sucrose is a ________.
Carbohydrates and proteins are built up from their basic building blocks by the ________.
removal of a water molecule between each two units
Choose the answer that best describes fibrous proteins.
are very stable and insoluble in water
Amino acids joining together to make a peptide is a good example of a(n) ________ reaction.
Which protein types are vitally important to cell function in all types of stressful circumstances?
Select the most correct statement regarding nucleic acids.
DNA is a long, double-stranded molecule made up of A, T, G, and C bases.
A chemical reaction in which bonds are broken is usually associated with ________.
the release of energy
Choose the answer that best describes HCO 3 -.
a bicarbonate ion
An atom with a valence of 3 may have a total of ________ electrons.
What does the formula C 6H 12O 6 mean?
There are 12 hydrogen, 6 carbon, and 6 oxygen atoms.
The chemical symbol O=O means ________.
the atoms are double bonded
Which of the following would be regarded as an organic molecule?
Which of the following statements is false?
Larger particles move faster than smaller ones and thus collide more frequently and more forcefully.
Select the statement about mixtures that is correct.
A solution contains solvent in large amounts and solute in smaller quantities.
The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?
2, 8, 1
Salts are always ________.
Which of the following is true regarding the concentration of solutions?
Molarity is one mole of solute per 1000 ml of solution.
Which of the following is a neutralization reaction?
HCl + NaOH → NaCl + H2O
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