BIOS 260 Quiz 2: Questions and Answers 100% Pass
Water-soluble substances easily pass through the phospholipid bilayer of a cell membrane.
Correct Ans-False
Phospholipids are polar molecules. Correct Ans-True
If the side chains of amino acids contain carboxyl (-COOH) groups, they Correct Ans-
contribute a negative charge to the amino acid at pH 10 AND are considered acidic amino
acids.
The atom, as a whole, is uncharged because Correct Ans-the number of protons equals the
number of electrons.
Atoms that gain electrons become Correct Ans-negatively charged
The most important molecule(s) in the world is (are) Correct Ans-Water
, BIOS 260 Quiz 2: Questions and Answers 100% Pass
Dan is a body builder. He decides that he is going to change his diet in an effort to increase his
muscle mass. Dan tells you that he plans to eat vegetables and proteins but no fats or
carbohydrates, because cells do not naturally contain these molecules and do not need them.
You advise Dan that his new diet is not a good choice, and that he would do better to follow a
well balanced diet that incorporates healthy amounts of proteins, fats AND carbohydrates.
Dan tells you that he knows proteins are needed to build muscle mass but that he doesn't
quite understand the role of proteins in a cell. He tells you five things he believes proteins are
needed for in cell function, but he is mistaken on one of these. Which of the following
statements regarding the role of proteins in cells is INCORRECT?
A. Proteins catalyze chemical reactions within cells.
B. Proteins provide structural support in cells (cytoskeleton).
C. Correct Ans-Proteins are a major component of starch.
The uncharged component of the atom is the Correct Ans-neutron
Water-soluble substances easily pass through the phospholipid bilayer of a cell membrane.
Correct Ans-False
Phospholipids are polar molecules. Correct Ans-True
If the side chains of amino acids contain carboxyl (-COOH) groups, they Correct Ans-
contribute a negative charge to the amino acid at pH 10 AND are considered acidic amino
acids.
The atom, as a whole, is uncharged because Correct Ans-the number of protons equals the
number of electrons.
Atoms that gain electrons become Correct Ans-negatively charged
The most important molecule(s) in the world is (are) Correct Ans-Water
, BIOS 260 Quiz 2: Questions and Answers 100% Pass
Dan is a body builder. He decides that he is going to change his diet in an effort to increase his
muscle mass. Dan tells you that he plans to eat vegetables and proteins but no fats or
carbohydrates, because cells do not naturally contain these molecules and do not need them.
You advise Dan that his new diet is not a good choice, and that he would do better to follow a
well balanced diet that incorporates healthy amounts of proteins, fats AND carbohydrates.
Dan tells you that he knows proteins are needed to build muscle mass but that he doesn't
quite understand the role of proteins in a cell. He tells you five things he believes proteins are
needed for in cell function, but he is mistaken on one of these. Which of the following
statements regarding the role of proteins in cells is INCORRECT?
A. Proteins catalyze chemical reactions within cells.
B. Proteins provide structural support in cells (cytoskeleton).
C. Correct Ans-Proteins are a major component of starch.
The uncharged component of the atom is the Correct Ans-neutron
