Campbell Biology in Focus Questions and
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You are working on a team that is designing a new drug. In order for this drug to work, it must enter the
cytoplasm of specific targeted cells. Which of the following would be a factor that determines whether
the molecule selectively enters the target cells? - Answer similarity of the drug molecule to other
molecules transported by the target cell
In a normal cellular protein, where would you expect to find a hydrophobic amino acid such as valine? -
Answer in the interior of the folded protein, away from water, or in a transmembrane portion
interacting with lipid fatty acid chains
From its atomic number of 15, it is possible to predict that the phosphorous atom has - Answer 15
protons and 15 electrons
All of the following are part of the prokaryotic cell expect - Answer an endoplasmic reticulum
Which of the following molecules contains the most polar covalent bond? - Answer H20
Which brand of biology is concerned with the naming and classifying of organisms? - Answer taxonomy
Which of the following is true of both starch and cellulose? - Answer They are both polymers of glucose
In receptor-mediated endocytosis, receptor molecules initially project to the outside of the cell. Where
do they end up after endocytosis? - Answer on the inside surface of the vesicle
The differences among the three categories of cytoskeletal elements outlined in the table above would
suggest that each of the following has specialized roles. Which of the following is a correct match? -
Answer microtubules and chromosome movement
Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming
clogged with very large complex, undigested lipids. Which cellular organelle must be involved in this
condition? - Answer the lysosome
, Which molecule would have a positive charge? - Answer E
There are 20 different amino acids. What makes one amino acid different from another? - Answer
different side chains (R groups) attached to a carbon
Which of the following effects is produced by the high surface tension of water? - Answer A water
strider can walk across the surface of a small pond
Which of the following would likely move through the lipid bilayer of a plasma membrane most rapidly?
- Answer CO2
Which of the following are nitrogenous bases of the purine type? - Answer guanine and adenine
About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements
make up approximately 96% of living matter? - Answer carbon, hydrogen, nitrogen, and oxygen
A controlled experiment is one in which - Answer there are at least two groups, one of which does not
receive the experimental treatment
Which of these provides evidence of the common ancestry of all life - Answer near universality of
genetic code
Hydrophobic substances such as vegetable oil are - Answer nonpolar substances that repel water
molecules
If a DNA sample were composed of 10% thymine, what would be the percentage of guanine? - Answer
40
What results from an unequal sharing of electrons between atoms? - Answer a polar covalent bond
Verified Answers 100% Guarantee Pass
You are working on a team that is designing a new drug. In order for this drug to work, it must enter the
cytoplasm of specific targeted cells. Which of the following would be a factor that determines whether
the molecule selectively enters the target cells? - Answer similarity of the drug molecule to other
molecules transported by the target cell
In a normal cellular protein, where would you expect to find a hydrophobic amino acid such as valine? -
Answer in the interior of the folded protein, away from water, or in a transmembrane portion
interacting with lipid fatty acid chains
From its atomic number of 15, it is possible to predict that the phosphorous atom has - Answer 15
protons and 15 electrons
All of the following are part of the prokaryotic cell expect - Answer an endoplasmic reticulum
Which of the following molecules contains the most polar covalent bond? - Answer H20
Which brand of biology is concerned with the naming and classifying of organisms? - Answer taxonomy
Which of the following is true of both starch and cellulose? - Answer They are both polymers of glucose
In receptor-mediated endocytosis, receptor molecules initially project to the outside of the cell. Where
do they end up after endocytosis? - Answer on the inside surface of the vesicle
The differences among the three categories of cytoskeletal elements outlined in the table above would
suggest that each of the following has specialized roles. Which of the following is a correct match? -
Answer microtubules and chromosome movement
Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming
clogged with very large complex, undigested lipids. Which cellular organelle must be involved in this
condition? - Answer the lysosome
, Which molecule would have a positive charge? - Answer E
There are 20 different amino acids. What makes one amino acid different from another? - Answer
different side chains (R groups) attached to a carbon
Which of the following effects is produced by the high surface tension of water? - Answer A water
strider can walk across the surface of a small pond
Which of the following would likely move through the lipid bilayer of a plasma membrane most rapidly?
- Answer CO2
Which of the following are nitrogenous bases of the purine type? - Answer guanine and adenine
About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements
make up approximately 96% of living matter? - Answer carbon, hydrogen, nitrogen, and oxygen
A controlled experiment is one in which - Answer there are at least two groups, one of which does not
receive the experimental treatment
Which of these provides evidence of the common ancestry of all life - Answer near universality of
genetic code
Hydrophobic substances such as vegetable oil are - Answer nonpolar substances that repel water
molecules
If a DNA sample were composed of 10% thymine, what would be the percentage of guanine? - Answer
40
What results from an unequal sharing of electrons between atoms? - Answer a polar covalent bond
