Mod 1-7

95問 • 1年前

Reviewer

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問題一覧

Which of the following statements supports the axiom, “All living organisms have a common ancestor?”

Building blocks of cells in the body are identical in all species.

The following are characteristics of a living organism.

Both A and B

He introduced the word biochemistry.

Neuberg

Which statement best describe the axiom, “Living cells function as isothermal chemical changes?”

The formation of ATP from ADP and vice versa.

The following can describe the axiom “Cells are capable of regulating their metabolic reactions and the biosynthesis of their enzymes to achieve maximum efficiency and economy,” except

Each organism has their own sets of nucleic acids and proteins.

Why biochemistry is important in medical laboratory science?

All of these.

An organic compound is one that:

Contains carbon

Polysaccharides are

Large molecules made of many smaller simple sugars

Polysaccharides are carbohydrates, which give large number of monosaccharides on hydrolysis.

Carbohydrates

What type of macromolecules are dominantly seen in cell walls?

Carbohydrates

Movement of water from an area of higher to an area of lower water concentration through selectively permeable membrane.

Osmosis

Vesicular transport is the

Both a and b

Type of endocytosis that involves the nonselective uptake of tiny droplets of extracellular fluid

Pinocytosis

The basic structural unit of the plasma membrane is the

Lipid bilayer

Integral proteins can function in the cell membrane in all the following ways except:

As an exocytosis vesicle

Part of the cell that is described to be networks of protein filaments that extend throughout the cytoplasm, providing cellular shape and organizations.

Cytoskeleton

Functions for ATP production

Mitochondria

The following factors influence the diffusion rate of substances through a plasma membrane except?

All of the above

Which of the following statements regarding the nucleus are true? 1. Nucleoli within the nucleus are the sites of ribosome synthesis. 2. Most of the cell’s hereditary units, called genes, are located within the nucleus. 3. Proteins synthesis occurs within the nucleus. 4. In non-dividing cells, DNA is found in the nucleus in the form of chromatin.

1, 2, 4

Stage when chromatin fibers condense and shorten to form chromosomes

Prophase

Which one of the following types of bonds is covalent?

Disulfide

What is the pH of a solution containing 0.2 M acetic acid (pKa=4.7) and 0.1 M sodium acetate?

5.4

A weak acid HA, has a pKa of 5.0. If 1.0 mol of this acid and 0.1 mol of NaOH were dissolved in one liter of water, what would the final pH be?

4.05

All of the following are true regarding vital force theory except:

Urea can be synthesized from simple inorganic compounds.

15. A patient seen in the ER has ingested antifreeze in a suicide attempt. Other than bicarbonate, which one of the following is the major buffer of acids to help maintain the pH in the blood within the range compatible with life?

Hemoglobin

The functional group that help stabilize the shape of proteins.

–SH

Organic compounds that function primarily to provide a readily available source of chemical energy to generate the ATP that drives metabolic reactions are:

Carbohydrates

The body’s most highly concentrated form of chemical energy is

Triglyceride

The disaccharide maltose is formed by combining what monosaccharides?

Glucose + glucose

The disaccharide sucrose is formed by combining what monosaccharides?

Glucose + fructose

When proteins are heated or pH is changed, their tertiary structure is ruptured and it loses biological activity. This process is called _________________.

Denaturation

Lipid and protein particles that are bonded together to make lipid more water soluble is termed as _______________.

Lipoproteins

Type of protein structure, which have the unique sequence of amino acids that are linked by covalent peptide bonds.

Primary structure

Which of the following structures is a 20:2 (Δ4,9) fatty acid?

CH3(CH2)2CH=CH(CH2)3CH=CH(CH2)9COOH

Which of the following statements is not true concerning DNA?

It is composed of a single strand of nucleotides.

All of the following are Nonpolar, aliphatic amino acids except

Serine

Which of the following is not an essential amino acid?

Proline

Of the 20 standard amino acids, only ______________ is not optically active. The reason is that its side chain is ____________.

Glycine: is a hydrogen atom

Which among the following is a non-essential amino acid?

Serine

Peptide bond is a _________.

Covalent bond

Which of the following statements is false?

Secondary structure of a protein determines how it folds up into a unique three-dimensional structure.

Tertiary conformation of proteins is maintained by 3 types of bonds namely ionic, hydrogen and __________.

Disulfide

Which of the following is true?

The disulfide bridges formed by oxidation of the sulfhydryl groups on cysteine stabilizes protein tertiary structure.

In 3° structure of proteins, folding and shaping is done by __________.

Hydrophobic interaction

β-pleated sheets are the examples of _________.

Secondary structure

Which of the following are known as helix breakers?

Proline and glycine

A process by which a protein structure assumes its functional shape or conformation is?

Folding

Which of the following is true about Michaelis-Menten kinetics?

It describes single substrate enzymes.

When the velocity of enzyme activity is plotted against substrate concentration, which of the following is obtained?

Hyperbolic curve

The rate-determining step of Michaelis-Menten kinetics is __________.

The complex dissociation step to produce products.

What is the general mechanism of an enzyme?

It acts by reducing the activation energy.

The allosteric inhibitor of an enzyme ___________.

Participates in feedback regulation.

In the case of allosteric enzymes what is the graphical representation when initial velocity is plotted against substrate concentration?

Sigmoid curve

Which is the enzyme that acts as a regulatory enzyme in a four-step metabolic pathway?

First enzyme

A certain enzyme will hydrolyze egg white but not starch. Which statement best explains this observation?

Enzyme molecules are specific in their actions.

The red precipitate formed when glucose is heated with “Benedict’s reagent” is

Cuprous oxide

Fructose and Glucose can be distinguished by ___________

Seliwanoff’s test

Which of the following is an example of monosaccharide?

Galactose

In which of the following forms, glucose is stored in plants?

Starch

In maltose, between which of the following carbons there is a linkage?

C1, C4

The following structure is what carbohydrate?[object Object]

β-D-glucose

Breakdown of glycogen to glucose in an example of

Catabolism

Which of the following carbohydrates is a triose?

Glyceraldehyde

Which of the following are found in connective tissues?

Glycosaminoglycan

Which of the following enzyme catalyzes the first step of glycolysis?

Hexokinase

What is the general term used for the anaerobic degradation of glucose to obtain energy?

Fermentation

Whenever the cell’s ATP supply is depleted, which of the following enzyme’s activity is increased?

Phosphofructokinase-1

Which one of the following metabolites is used by all cells for glycolysis, glycogen synthesis, and the hexose monophosphate shunt pathway?

Glucose-6-phosphate

After digestion of a piece of cake that contains flour, milk, and sucrose as its primary ingredients, the major carbohydrate products entering the blood are which one of the following? Choose the one best answer.

Glucose, fructose, and galactose

Glycolysis converts ___________

Glucose into pyruvate

In the pentose phosphate pathway, the major products are ____________.

Ribulose and NADPH

What is the first reaction of the pentose phosphate pathway?

Oxidation of glucose 6-phosphate to 6-phosphoglucono-δ-lactone.

The pentose-phosphate pathway generates which one of the following?

Xylulose-5-phosphate by one of the oxidative reactions.

Which one out of the following enzymes acts in the pentose phosphate pathway?

6-phosphogluconate dehydrogenase

Oxidation of 3 molecules of glucose by pentose phosphate pathway results in the production of ____________.

3 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2

Which one of the following statements is correct about the pentose phosphate pathway?

It generates 6 moles of CO2 for each mole of glucose consumed.

Thiamine pyrophosphate is a coenzyme of what enzyme?

Transketolase

Conversion of xylulose 5-phosphate to ribulose 5-phosphate is catalyzed by ___________.

Phosphopentose epimerase

Which of the following statements is correct about the reductive pentose phosphate pathway?

Transaldolase transfers 2 carbon units.

The use of NADPH generated from pentose phosphate pathway cannot be ____________.

Oxidized in the electron transport chain to provide 38 ATPs.

The deficiency of which of the following enzyme leads to galactosemia?

Galactokinase

The conversion of which of the following involves two nucleotide derivatives?

Galactose 1-phosphate to glucose 1-phosphate

A 4-week-old baby is being seen by the pediatrician because of frequent vomiting after meals and tenderness in the abdomen. Upon examination, the physician noted an enlarged liver and a hint of cataract formation in both of the child’s eyes. A urine dipstick test for a reducing sugar gave a positive result. Blood glucose levels were slightly below normal. The compound that reacted with the urine dipstick test was most likely which one of the following?

Galactose

Which of the following enzyme is responsible for the conversion of glucose 1-phosphate to glucose 6- phosphate?

Phosphoglucomutase

The enzyme responsible for the conversion of galactose to galactitol.

Aldose reductase

Glucagon and epinephrine stimulate glycogen breakdown to glucose 6-phosphate ________.

Indirectly by first stimulating adenylate cyclase to make cAMP.

Glucagon is released from ___________.

Pancreas

Glucose 6-phosphatase is present only in ___________.

Liver

In glycogen degradation, the enzyme responsible to convert glycogen to glucose 1-phosphate is

Glycogen phosphorylase

During meal (therefore, in a non-fasting state), blood glucagon is ________, while blood insulin is ____________.

Decreased; increased

In relation to question number 5, in a non-fasting state, glycogen degradation is __________ while glycogen synthesis is ______________.

Decreased; increased

This is the glycogen storage disease wherein there is deficiency of the glycogen branching enzyme, transglucosidase.

Type IV

The Andersen disease, which is an example of GSD, is caused by the deficiency of what enzyme? Glucosyl 4:6 transferase

Glucosyl 4:6 transferase

In the liver, during glycogen degradation, the enzyme phosphoglucomutase converts ______________.

Glucose 1-phosphate to glucose 6-phosphate

Which of the following is INCORRECTLY matched?

Type VI: McArdle

PMLS

Reviewer · 87問 · 2年前

PMLS

87問 • 2年前

Reviewer

ANAPHY

Reviewer · 101問 · 2年前

ANAPHY

101問 • 2年前

Reviewer

Anaphy P2

Reviewer · 100問 · 2年前

Anaphy P2

Anaphy P2 (2)

Anaphy P2 (2)

Contemporary World

Contemporary World

Pmls P2

Pmls P2

hes p3

Reviewer · 100問 · 1年前

hes p3

Anachem

Anachem

sjc l1

sjc l1

bio lab1 pic

bio lab1 pic

sjc L2

sjc L2

Biostat L3

Biostat L3

sjc L3&L4

sjc L3&L4

HIS L3

HIS L3

HIS L4

HIS L4

HIS L5

HIS L5

HIS L3

HIS L3

PSTM L3-L5

PSTM L3-L5

P1 Reviewer

P1 Reviewer

CPH P2

CPH P2

P2 Mod

P2 Mod

ANCH P2

ANCH P2

ANCH P2 MOD

ANCH P2 MOD

CPH

CPH

HIS

HIS

CFU ANCH P1-P3

CFU ANCH P1-P3

anch

anch

ANCH P2 Terms

ANCH P2 Terms

BIOSTAT FINALS (1)

Reviewer · 100問 · 1年前

BIOSTAT FINALS (1)

BIOSTAT FINALS (2)

BIOSTAT FINALS (2)

BIOSTAT FORMULA

BIOSTAT FORMULA

CFU CPH 1-5

CFU CPH 1-5

CFU CPH 6-16

CFU CPH 6-16

CFU CPH 17-23

CFU CPH 17-23

CFU HIS P1

CFU HIS P1

CFU HIS P2

CFU HIS P2

CFU HIS P3

CFU HIS P3

BIOSTAT FORMULA

BIOSTAT FORMULA

Mod 1-7

Mod 1-7

Mod 1

Mod 1

Mod 2

Mod 2

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Mod 4

Mod 6

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Mod 1-6

Mod 1-6

Mod 7

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Mod 1

Mod 1

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Mod 2

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Mod 3

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Mod 5

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Mod 1

Mod 1

Mod 2

Mod 2

Mod 3

Mod 3

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Mod 4

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Mod 5

Mod 6

Mod 6

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Mod 7

Mod 1

Mod 1

Mod 2

Mod 2

Mod 3

Mod 3

Mod 1

Mod 1

Mod 6

Mod 6

Mod 1

Mod 1

Mod 2

Mod 2

Mod 5

Mod 5

Mod 7

Mod 7

Mod 5

Mod 5

Mod 7

Mod 7

Mod 4

Mod 4

Mod 6

Mod 6

Mod 2

Mod 2

Mod 3

Mod 3

Mod 5

Mod 5

Mod 4

Mod 4

Lab Management

Lab Management

Biochemistry

Biochemistry

Cytogenetics

Cytogenetics

問題一覧

Which of the following statements supports the axiom, “All living organisms have a common ancestor?”

Building blocks of cells in the body are identical in all species.

The following are characteristics of a living organism.

Both A and B

He introduced the word biochemistry.

Neuberg

Which statement best describe the axiom, “Living cells function as isothermal chemical changes?”

The formation of ATP from ADP and vice versa.

The following can describe the axiom “Cells are capable of regulating their metabolic reactions and the biosynthesis of their enzymes to achieve maximum efficiency and economy,” except

Each organism has their own sets of nucleic acids and proteins.

Why biochemistry is important in medical laboratory science?

All of these.

An organic compound is one that:

Contains carbon

Polysaccharides are

Large molecules made of many smaller simple sugars

Polysaccharides are carbohydrates, which give large number of monosaccharides on hydrolysis.

Carbohydrates

What type of macromolecules are dominantly seen in cell walls?

Carbohydrates

Movement of water from an area of higher to an area of lower water concentration through selectively permeable membrane.

Osmosis

Vesicular transport is the

Both a and b

Type of endocytosis that involves the nonselective uptake of tiny droplets of extracellular fluid

Pinocytosis

The basic structural unit of the plasma membrane is the

Lipid bilayer

Integral proteins can function in the cell membrane in all the following ways except:

As an exocytosis vesicle

Part of the cell that is described to be networks of protein filaments that extend throughout the cytoplasm, providing cellular shape and organizations.

Cytoskeleton

Functions for ATP production

Mitochondria

The following factors influence the diffusion rate of substances through a plasma membrane except?

All of the above

1, 2, 4

Stage when chromatin fibers condense and shorten to form chromosomes

Prophase

Which one of the following types of bonds is covalent?

Disulfide

What is the pH of a solution containing 0.2 M acetic acid (pKa=4.7) and 0.1 M sodium acetate?

5.4

A weak acid HA, has a pKa of 5.0. If 1.0 mol of this acid and 0.1 mol of NaOH were dissolved in one liter of water, what would the final pH be?

4.05

All of the following are true regarding vital force theory except:

Urea can be synthesized from simple inorganic compounds.

Hemoglobin

The functional group that help stabilize the shape of proteins.

–SH

Organic compounds that function primarily to provide a readily available source of chemical energy to generate the ATP that drives metabolic reactions are:

Carbohydrates

The body’s most highly concentrated form of chemical energy is

Triglyceride

The disaccharide maltose is formed by combining what monosaccharides?

Glucose + glucose

The disaccharide sucrose is formed by combining what monosaccharides?

Glucose + fructose

When proteins are heated or pH is changed, their tertiary structure is ruptured and it loses biological activity. This process is called _________________.

Denaturation

Lipid and protein particles that are bonded together to make lipid more water soluble is termed as _______________.

Lipoproteins

Type of protein structure, which have the unique sequence of amino acids that are linked by covalent peptide bonds.

Primary structure

Which of the following structures is a 20:2 (Δ4,9) fatty acid?

CH3(CH2)2CH=CH(CH2)3CH=CH(CH2)9COOH

Which of the following statements is not true concerning DNA?

It is composed of a single strand of nucleotides.

All of the following are Nonpolar, aliphatic amino acids except

Serine

Which of the following is not an essential amino acid?

Proline

Of the 20 standard amino acids, only ______________ is not optically active. The reason is that its side chain is ____________.

Glycine: is a hydrogen atom

Which among the following is a non-essential amino acid?

Serine

Peptide bond is a _________.

Covalent bond

Which of the following statements is false?

Secondary structure of a protein determines how it folds up into a unique three-dimensional structure.

Tertiary conformation of proteins is maintained by 3 types of bonds namely ionic, hydrogen and __________.

Disulfide

Which of the following is true?

The disulfide bridges formed by oxidation of the sulfhydryl groups on cysteine stabilizes protein tertiary structure.

In 3° structure of proteins, folding and shaping is done by __________.

Hydrophobic interaction

β-pleated sheets are the examples of _________.

Secondary structure

Which of the following are known as helix breakers?

Proline and glycine

A process by which a protein structure assumes its functional shape or conformation is?

Folding

Which of the following is true about Michaelis-Menten kinetics?

It describes single substrate enzymes.

When the velocity of enzyme activity is plotted against substrate concentration, which of the following is obtained?

Hyperbolic curve

The rate-determining step of Michaelis-Menten kinetics is __________.

The complex dissociation step to produce products.

What is the general mechanism of an enzyme?

It acts by reducing the activation energy.

The allosteric inhibitor of an enzyme ___________.

Participates in feedback regulation.

In the case of allosteric enzymes what is the graphical representation when initial velocity is plotted against substrate concentration?

Sigmoid curve

Which is the enzyme that acts as a regulatory enzyme in a four-step metabolic pathway?

First enzyme

A certain enzyme will hydrolyze egg white but not starch. Which statement best explains this observation?

Enzyme molecules are specific in their actions.

The red precipitate formed when glucose is heated with “Benedict’s reagent” is

Cuprous oxide

Fructose and Glucose can be distinguished by ___________

Seliwanoff’s test

Which of the following is an example of monosaccharide?

Galactose

In which of the following forms, glucose is stored in plants?

Starch

In maltose, between which of the following carbons there is a linkage?

C1, C4

The following structure is what carbohydrate?[object Object]

β-D-glucose

Breakdown of glycogen to glucose in an example of

Catabolism

Which of the following carbohydrates is a triose?

Glyceraldehyde

Which of the following are found in connective tissues?

Glycosaminoglycan

Which of the following enzyme catalyzes the first step of glycolysis?

Hexokinase

What is the general term used for the anaerobic degradation of glucose to obtain energy?

Fermentation

Whenever the cell’s ATP supply is depleted, which of the following enzyme’s activity is increased?

Phosphofructokinase-1

Which one of the following metabolites is used by all cells for glycolysis, glycogen synthesis, and the hexose monophosphate shunt pathway?

Glucose-6-phosphate

Glucose, fructose, and galactose

Glycolysis converts ___________

Glucose into pyruvate

In the pentose phosphate pathway, the major products are ____________.

Ribulose and NADPH

What is the first reaction of the pentose phosphate pathway?

Oxidation of glucose 6-phosphate to 6-phosphoglucono-δ-lactone.

The pentose-phosphate pathway generates which one of the following?

Xylulose-5-phosphate by one of the oxidative reactions.

Which one out of the following enzymes acts in the pentose phosphate pathway?

6-phosphogluconate dehydrogenase

Oxidation of 3 molecules of glucose by pentose phosphate pathway results in the production of ____________.

3 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2

Which one of the following statements is correct about the pentose phosphate pathway?

It generates 6 moles of CO2 for each mole of glucose consumed.

Thiamine pyrophosphate is a coenzyme of what enzyme?

Transketolase

Conversion of xylulose 5-phosphate to ribulose 5-phosphate is catalyzed by ___________.

Phosphopentose epimerase

Which of the following statements is correct about the reductive pentose phosphate pathway?

Transaldolase transfers 2 carbon units.

The use of NADPH generated from pentose phosphate pathway cannot be ____________.

Oxidized in the electron transport chain to provide 38 ATPs.

The deficiency of which of the following enzyme leads to galactosemia?

Galactokinase

The conversion of which of the following involves two nucleotide derivatives?

Galactose 1-phosphate to glucose 1-phosphate

Galactose

Which of the following enzyme is responsible for the conversion of glucose 1-phosphate to glucose 6- phosphate?

Phosphoglucomutase

The enzyme responsible for the conversion of galactose to galactitol.

Aldose reductase

Glucagon and epinephrine stimulate glycogen breakdown to glucose 6-phosphate ________.

Indirectly by first stimulating adenylate cyclase to make cAMP.

Glucagon is released from ___________.

Pancreas

Glucose 6-phosphatase is present only in ___________.

Liver

In glycogen degradation, the enzyme responsible to convert glycogen to glucose 1-phosphate is

Glycogen phosphorylase

During meal (therefore, in a non-fasting state), blood glucagon is ________, while blood insulin is ____________.

Decreased; increased

In relation to question number 5, in a non-fasting state, glycogen degradation is __________ while glycogen synthesis is ______________.

Decreased; increased

This is the glycogen storage disease wherein there is deficiency of the glycogen branching enzyme, transglucosidase.

Type IV

The Andersen disease, which is an example of GSD, is caused by the deficiency of what enzyme? Glucosyl 4:6 transferase

Glucosyl 4:6 transferase

In the liver, during glycogen degradation, the enzyme phosphoglucomutase converts ______________.

Glucose 1-phosphate to glucose 6-phosphate

Which of the following is INCORRECTLY matched?

Type VI: McArdle