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BIO-201 Weeks 1-3 all
questions and answers
with 100% accuracy
(PASS GUARANTEED)
Carbohydrate Metabolism
1. What happens to pyruvic acid in the presence of oxygen?
a. It enters the mitochondria and is oxidized by aerobic
respiration 2. What is the cellular location for the Krebs
cycle?
a. Mitochondria
3. What are the end products of the complete oxidation of glucose?
a. CO2, H2O, and ATP
4. Which term refers to the synthesis of glycogen by polymerizing
glucose?
a. Glycogenesis
5. What is glycogenolysis?
a. Breakdown of glycogen to release glucose
6. The process called _____ is the synthesis of glucose from
noncarbohydrates such as fats and amino acids
a. Gluconeogenesis
7. In the presence of oxygen, ____ acid enters the mitochondria and
is oxidized by aerobic respiration
a. Pyruvic
8. Choose all the products of complete glucose catabolism
(oxidation)
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a. ATP, water, carbon dioxide
9. Choose all the end products of the complete aerobic oxidation of
glucose
a. ATP, water, carbon dioxide
10.The process of glycolysis results in net gain of how many molecules
of ATP?
a. 2
11.Unlike aerobic respiration, anaerobic fermentation may occur
under which of the following conditions?
a. When no oxygen is available
12.When electrons bind to oxygen at the end of the electron
transport chain, ____ is formed
a. Water
13.Lactate is converted back to pyruvate in which organ?
a. Liver
14.Which component of the aerobic respiration pathway acts as a
proton pump that removes H+ from the mitochondrial matrix
and pumps it into the space between the inner and outer
mitochondrial membranes?
a. The electron transport chain
15.Which process yields a net gain of 2 ATP per glucose molecule?
Glycolysis
16.In anaerobic fermentation, NADH donates a pair of electrons to
____ acid
a. Pyruvic
17.Which term refers to the hydrolysis of glycogen to release glucose
or glucose 1phosphate?
a. Glycogenolysis
Chemistry of Life
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1. In many biochemical reactions, individual subunits are joined to
form larger macromolecules with the release of water molecules.
How are these reactions classified?
a. Dehydration synthesis reactions
2. Which of the following best describes a polar covalent bond?
a. Electrons are shared unequally between two atoms
3. Phosphorylation of an enzyme _____
a. Can activate a metabolic pathway
b. Can turn off a metabolic pathway
4. Which type of chemical bond involves the exchange of electrons?
a. Ionic
5. Polymers formed of many simple sugars are classified as _____
a. Polysaccharides and complex carbohydrates
6. An energy storage polysaccharide in plants is called ____
a. Starch
7. Which term is used to describe a series of reactions, where each
step is catalyzed by a specific enzyme?
a. Metabolic pathway
8. Kinases catalyze which type of reaction?
a. Phosphorylation
9. Which best describes what occurs in a condensation reaction?
a. A water molecule is removed from a molecule when it
creates a covalent bond
10.An enzyme will usually catalyze only one step in a metabolic
pathway
a. True - each step in a pathway is usually regulated by a
specific enzyme
11.Which of the following best describes very weak, brief attractions
between neutral atoms?
a. Van der Waals forces
12.Choose all the statements that are true of proteins?
They act as receptors on cells surfaces, make up molecules
that can transport oxygen, catalyze chemical reactions
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13.Glutathione binds to reactive oxygen (free radicals), neutralizing
them. Therefore, glutathione is a(n) ____
a. Antioxidant
14.Colloids are chemical mixtures that contain _____
a. Suspended particles that scatter light and particles smaller
than 100 nm
15.Name of the family of macromolecules that plays a role in cell
structure, communication (hormones and transmitters),
membrane transport, catalysis (enzymes), recognition and
protection (immune factors), movement (contractile molecules),
and cell adhesion
a. Proteins
16. Which are true regarding metabolism?
a. It can be defined as the sum of all the chemical reactions in
the body, includes reactions where new molecules are
synthesized, and includes reactions where molecules are
broken down
17.A chemical mixture containing particles that are too large to pass
through most selectively permeable membrane, but small
enough to remain even dispersed through the solvent is called
a(n) ____
a. Colloid
18.Which molecule is most likely to contain methyl groups?
a. Fats
19.A phospholipid molecule with a carbohydrate covalently bonded
to it is called a(n) _____. It can be found in the plasma
membranes of cells
a. Glycolipid
20.A molecule consisting of a carbon chain, with 4 to 24 carbons,
with a methyl group on one end and a carboxyl group on the
opposite end is which of the following?
a. Fatty acid
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BIO-201 Weeks 1-3 all
questions and answers
with 100% accuracy
(PASS GUARANTEED)
Carbohydrate Metabolism
1. What happens to pyruvic acid in the presence of oxygen?
a. It enters the mitochondria and is oxidized by aerobic
respiration 2. What is the cellular location for the Krebs
cycle?
a. Mitochondria
3. What are the end products of the complete oxidation of glucose?
a. CO2, H2O, and ATP
4. Which term refers to the synthesis of glycogen by polymerizing
glucose?
a. Glycogenesis
5. What is glycogenolysis?
a. Breakdown of glycogen to release glucose
6. The process called _____ is the synthesis of glucose from
noncarbohydrates such as fats and amino acids
a. Gluconeogenesis
7. In the presence of oxygen, ____ acid enters the mitochondria and
is oxidized by aerobic respiration
a. Pyruvic
8. Choose all the products of complete glucose catabolism
(oxidation)
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a. ATP, water, carbon dioxide
9. Choose all the end products of the complete aerobic oxidation of
glucose
a. ATP, water, carbon dioxide
10.The process of glycolysis results in net gain of how many molecules
of ATP?
a. 2
11.Unlike aerobic respiration, anaerobic fermentation may occur
under which of the following conditions?
a. When no oxygen is available
12.When electrons bind to oxygen at the end of the electron
transport chain, ____ is formed
a. Water
13.Lactate is converted back to pyruvate in which organ?
a. Liver
14.Which component of the aerobic respiration pathway acts as a
proton pump that removes H+ from the mitochondrial matrix
and pumps it into the space between the inner and outer
mitochondrial membranes?
a. The electron transport chain
15.Which process yields a net gain of 2 ATP per glucose molecule?
Glycolysis
16.In anaerobic fermentation, NADH donates a pair of electrons to
____ acid
a. Pyruvic
17.Which term refers to the hydrolysis of glycogen to release glucose
or glucose 1phosphate?
a. Glycogenolysis
Chemistry of Life
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1. In many biochemical reactions, individual subunits are joined to
form larger macromolecules with the release of water molecules.
How are these reactions classified?
a. Dehydration synthesis reactions
2. Which of the following best describes a polar covalent bond?
a. Electrons are shared unequally between two atoms
3. Phosphorylation of an enzyme _____
a. Can activate a metabolic pathway
b. Can turn off a metabolic pathway
4. Which type of chemical bond involves the exchange of electrons?
a. Ionic
5. Polymers formed of many simple sugars are classified as _____
a. Polysaccharides and complex carbohydrates
6. An energy storage polysaccharide in plants is called ____
a. Starch
7. Which term is used to describe a series of reactions, where each
step is catalyzed by a specific enzyme?
a. Metabolic pathway
8. Kinases catalyze which type of reaction?
a. Phosphorylation
9. Which best describes what occurs in a condensation reaction?
a. A water molecule is removed from a molecule when it
creates a covalent bond
10.An enzyme will usually catalyze only one step in a metabolic
pathway
a. True - each step in a pathway is usually regulated by a
specific enzyme
11.Which of the following best describes very weak, brief attractions
between neutral atoms?
a. Van der Waals forces
12.Choose all the statements that are true of proteins?
They act as receptors on cells surfaces, make up molecules
that can transport oxygen, catalyze chemical reactions
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13.Glutathione binds to reactive oxygen (free radicals), neutralizing
them. Therefore, glutathione is a(n) ____
a. Antioxidant
14.Colloids are chemical mixtures that contain _____
a. Suspended particles that scatter light and particles smaller
than 100 nm
15.Name of the family of macromolecules that plays a role in cell
structure, communication (hormones and transmitters),
membrane transport, catalysis (enzymes), recognition and
protection (immune factors), movement (contractile molecules),
and cell adhesion
a. Proteins
16. Which are true regarding metabolism?
a. It can be defined as the sum of all the chemical reactions in
the body, includes reactions where new molecules are
synthesized, and includes reactions where molecules are
broken down
17.A chemical mixture containing particles that are too large to pass
through most selectively permeable membrane, but small
enough to remain even dispersed through the solvent is called
a(n) ____
a. Colloid
18.Which molecule is most likely to contain methyl groups?
a. Fats
19.A phospholipid molecule with a carbohydrate covalently bonded
to it is called a(n) _____. It can be found in the plasma
membranes of cells
a. Glycolipid
20.A molecule consisting of a carbon chain, with 4 to 24 carbons,
with a methyl group on one end and a carboxyl group on the
opposite end is which of the following?
a. Fatty acid
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