Campbell Biology in Focus, Midterm #1
A controlled experiment is one in which - ANSWER there are at least two groups, one of
which does not receive the experimental treatment
A molecule with the chemical formula C6H12O is probably - ANSWER carbohydrate and
monosaccharide only
A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins
would most likely cause defects in its - ANSWER mitochondria and Golgi apparatus
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
All of the following are part of the prokaryotic cell expect - ANSWER an endoplasmic
reticulum
All of the following contain amino acids except - ANSWER cholesterol
Electrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient energy,
a possible result is that - ANSWER an electron may move to an electron shell farther away
from the nucleus
From its atomic number of 15, it is possible to predict that the phosphorous atom has -
ANSWER 15 protons and 15 electrons
From its atomic number of 15, it is possible to predict that the phosphorus atom has -
ANSWER 15 protons and 15 electrons
How many molecules of water are needed to completely hydrolyze a polymer that is 11 monomers
long? - ANSWER 10
Humans can digest starch but not cellulose because - ANSWER humans have enzymes that
can hydrolyze the glycosidic linkages of starch but not the glycosidic linkages of cellulose
Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular
components. In animal cells, which of the following organelles contains these hydrolytic enzymes? -
ANSWER Peroxisome
Hydrophobic substances such as vegetable oil are - ANSWER nonpolar substances that
repel water molecules
If 14C-labeled uracil is added to the growth medium of cells, what macromolecules will be labeled? -
ANSWER RNA
If a DNA sample were composed of 10% thymine, what would be the percentage of guanine? -
ANSWER 40
If cells are grown in a medium containing radioactive 32P-labeled phosphate, which of these
molecules will be labeled? - ANSWER both phospholipids and nucleic acids
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
A controlled experiment is one in which - ANSWER there are at least two groups, one of
which does not receive the experimental treatment
A molecule with the chemical formula C6H12O is probably - ANSWER carbohydrate and
monosaccharide only
A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins
would most likely cause defects in its - ANSWER mitochondria and Golgi apparatus
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
All of the following are part of the prokaryotic cell expect - ANSWER an endoplasmic
reticulum
All of the following contain amino acids except - ANSWER cholesterol
Electrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient energy,
a possible result is that - ANSWER an electron may move to an electron shell farther away
from the nucleus
From its atomic number of 15, it is possible to predict that the phosphorous atom has -
ANSWER 15 protons and 15 electrons
From its atomic number of 15, it is possible to predict that the phosphorus atom has -
ANSWER 15 protons and 15 electrons
How many molecules of water are needed to completely hydrolyze a polymer that is 11 monomers
long? - ANSWER 10
Humans can digest starch but not cellulose because - ANSWER humans have enzymes that
can hydrolyze the glycosidic linkages of starch but not the glycosidic linkages of cellulose
Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular
components. In animal cells, which of the following organelles contains these hydrolytic enzymes? -
ANSWER Peroxisome
Hydrophobic substances such as vegetable oil are - ANSWER nonpolar substances that
repel water molecules
If 14C-labeled uracil is added to the growth medium of cells, what macromolecules will be labeled? -
ANSWER RNA
If a DNA sample were composed of 10% thymine, what would be the percentage of guanine? -
ANSWER 40
If cells are grown in a medium containing radioactive 32P-labeled phosphate, which of these
molecules will be labeled? - ANSWER both phospholipids and nucleic acids
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
