Anatomy chapter 4 Questions And
Answers 2022
"Metablosim" refers to
A. the reactions in the body that synthesize proteins and nucleic acids
B. the reactions in the body that break down proteins and nucleic acids
C. all of the chemical reactions in a cell
D. the breakdown of glucose molecules to release energy - Answer-C. all of the
chemical reactions in a cell
One reason that protein synthesis is important is that
A. enzymes are proteins and enzymes are essential to metabolism
B. proteins release energy for metabolic reactions
C. proteins encode DNA sequences
D. the diet does not provide the building blocks of protein - Answer-A. enzymes are
proteins and enzymes are essential to metabolism
Anabolic metabolism refers to
A. biochemical reactions that synthesize compounds
B. all processes required to maintain life
C. biochemical reactions that break down compounds
D. biochemical reactions that release energy from nutrients - Answer-A. biochemical
reactions that synthesize compounds
Which of the following is an example of catabolism
A. The assembly of a cell membrane from precursor molecules
B. The increase in muscle tissue with exercise
C. The formation of secretory proteins in the pancreas
D. The breakdown of glucose in the cytoplasm and mitochondria - Answer-D. The
breakdown of glucose in the cytoplasm and mitochondria
Catabolism refers to
A. Chemical reactions that acquire energy
B. Chemical reactions that release energy
C. Synthesis of large molecules
D. The formation of genetic material - Answer-B. Chemical reactions that release
energy
An example of an anabolic reaction is
A. Many monosaccharides bonding, forming glycogen
B. A dipeptide breaking down into two amino acids
C. Glycerol reacting with 3 fatty acid molecules to yield water and proteins
D. Glycogen breaking down into many monosaccharides - Answer-A. Many
monosaccharides bonding, forming glycogen
In dehydration synthesis of a carbohydrate,
A. Larger molecules are decomposed into smaller ones
B. Monosaccharides are joined
, C. Water molecules bond to monosaccharide molecules
D. The molecule is decomposed into carbon dioxide and water - Answer-B.
Monosaccharides are joined
When a sucrose molecule is decomposed to yield a glucose molecule and a fructose
molecule,
A. dehydration synthesis occurs
B. a water molecule is released
C. a water molecule is used
D. starch is consumed - Answer-C. A water molecule is used
Dehydration synthesis reactions _____, whereas hydrolysis reactions _____.
A. lose H2O to break bonds; use H2O to form bonds
B. break large molecules into smaller ones; build large molecules from smaller ones
C. use H2O to form bonds; lose H2O to break bonds
D. lose H2O to form bonds; use H2O to break bonds - Answer-D. Lose H2O to form
bonds; use H2O to break bonds
Which of the following is not a characteristic of enzymes
A. they speed up the rate of chemical reactions but are not used up in the process
B. most are proteins
C. they are most active at temperatures above 53 degrees C
D. they have active sites and interact with specific substrates - Answer-C. They are
most active at temperatures above 53 degrees C
An enzyme is
A. a molecule, usually a protein, that speeds the rate of a biochemical reaction by
lowering the activation enegry
B. the genetic material
C. a protein that promotes metabolic reactions by slowing reactions that are too fast
D. usually a vitamin - Answer-A. A molecule, usually a protein, that speeds the rate
of a biochemical reaction by lowering the activation energy
The name of an enzyme ends in
A. -ese
B. -ose
C. -gen
D. -ase - Answer-D. -ase
Which of the following best describes the interaction between an enzyme and its
substrate
A. the enzyme surrounds and completely contains the substrate
B. the substrate surrounds and completely contains the enzyme
C. the enzyme temporarily deactivates the substrate
D. part of the enzyme temporarily binds part of the substrate molecule - Answer-D.
Part of the enzyme temporarily binds part of the substrate molecule
An active site of an enzyme is
A. the part of the enzyme that binds ATP
B. a sequence of DNA nucleotides that encodes a protein molecule
Answers 2022
"Metablosim" refers to
A. the reactions in the body that synthesize proteins and nucleic acids
B. the reactions in the body that break down proteins and nucleic acids
C. all of the chemical reactions in a cell
D. the breakdown of glucose molecules to release energy - Answer-C. all of the
chemical reactions in a cell
One reason that protein synthesis is important is that
A. enzymes are proteins and enzymes are essential to metabolism
B. proteins release energy for metabolic reactions
C. proteins encode DNA sequences
D. the diet does not provide the building blocks of protein - Answer-A. enzymes are
proteins and enzymes are essential to metabolism
Anabolic metabolism refers to
A. biochemical reactions that synthesize compounds
B. all processes required to maintain life
C. biochemical reactions that break down compounds
D. biochemical reactions that release energy from nutrients - Answer-A. biochemical
reactions that synthesize compounds
Which of the following is an example of catabolism
A. The assembly of a cell membrane from precursor molecules
B. The increase in muscle tissue with exercise
C. The formation of secretory proteins in the pancreas
D. The breakdown of glucose in the cytoplasm and mitochondria - Answer-D. The
breakdown of glucose in the cytoplasm and mitochondria
Catabolism refers to
A. Chemical reactions that acquire energy
B. Chemical reactions that release energy
C. Synthesis of large molecules
D. The formation of genetic material - Answer-B. Chemical reactions that release
energy
An example of an anabolic reaction is
A. Many monosaccharides bonding, forming glycogen
B. A dipeptide breaking down into two amino acids
C. Glycerol reacting with 3 fatty acid molecules to yield water and proteins
D. Glycogen breaking down into many monosaccharides - Answer-A. Many
monosaccharides bonding, forming glycogen
In dehydration synthesis of a carbohydrate,
A. Larger molecules are decomposed into smaller ones
B. Monosaccharides are joined
, C. Water molecules bond to monosaccharide molecules
D. The molecule is decomposed into carbon dioxide and water - Answer-B.
Monosaccharides are joined
When a sucrose molecule is decomposed to yield a glucose molecule and a fructose
molecule,
A. dehydration synthesis occurs
B. a water molecule is released
C. a water molecule is used
D. starch is consumed - Answer-C. A water molecule is used
Dehydration synthesis reactions _____, whereas hydrolysis reactions _____.
A. lose H2O to break bonds; use H2O to form bonds
B. break large molecules into smaller ones; build large molecules from smaller ones
C. use H2O to form bonds; lose H2O to break bonds
D. lose H2O to form bonds; use H2O to break bonds - Answer-D. Lose H2O to form
bonds; use H2O to break bonds
Which of the following is not a characteristic of enzymes
A. they speed up the rate of chemical reactions but are not used up in the process
B. most are proteins
C. they are most active at temperatures above 53 degrees C
D. they have active sites and interact with specific substrates - Answer-C. They are
most active at temperatures above 53 degrees C
An enzyme is
A. a molecule, usually a protein, that speeds the rate of a biochemical reaction by
lowering the activation enegry
B. the genetic material
C. a protein that promotes metabolic reactions by slowing reactions that are too fast
D. usually a vitamin - Answer-A. A molecule, usually a protein, that speeds the rate
of a biochemical reaction by lowering the activation energy
The name of an enzyme ends in
A. -ese
B. -ose
C. -gen
D. -ase - Answer-D. -ase
Which of the following best describes the interaction between an enzyme and its
substrate
A. the enzyme surrounds and completely contains the substrate
B. the substrate surrounds and completely contains the enzyme
C. the enzyme temporarily deactivates the substrate
D. part of the enzyme temporarily binds part of the substrate molecule - Answer-D.
Part of the enzyme temporarily binds part of the substrate molecule
An active site of an enzyme is
A. the part of the enzyme that binds ATP
B. a sequence of DNA nucleotides that encodes a protein molecule
