How many different proteins may be present in normal LDH? (A) One (B) Two (C) Three (D) Four

How many different proteins may be present in normal LDH? (A) One (B) Two (C) Three (D) Four
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Answer :  D
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The chemical forces that bind most coenzymes and substrates to enzymes such as LDH are (A) Hydrogen bonds (B) Peptide bonds (C) Coordinate bonds (D) Covalent bonds

Description : The chemical forces that bind most coenzymes and substrates to enzymes such as LDH are (A) Hydrogen bonds (B) Peptide bonds (C) Coordinate bonds (D) Covalent bonds

Last Answer : Answer : D

LDH assays are most useful in diagnosing diseases of the (A) Heart (B) Pancreas (C) Brain (D) Kidney

Description : LDH assays are most useful in diagnosing diseases of the (A) Heart (B) Pancreas (C) Brain (D) Kidney

Last Answer : Answer : A

An increase in LDH-5 enzyme is seen in the following except (A) Acute hepatitis (B) Muscular distrophies (C) Breast carcinoma (D) Pulmonary embolism

Description : An increase in LDH-5 enzyme is seen in the following except (A) Acute hepatitis (B) Muscular distrophies (C) Breast carcinoma (D) Pulmonary embolism

Last Answer : Answer : D

In which diseases of the following organs, isoenzymes LDH-1 and LDH-2 will be released in plasma? (A) Kidney, R.B.C and Liver (B) Heart, Kidney and R.B.C (C) Heart, Kidney and Liver (D) Heart, Lungs and Brain

Description : In which diseases of the following organs, isoenzymes LDH-1 and LDH-2 will be released in plasma? (A) Kidney, R.B.C and Liver (B) Heart, Kidney and R.B.C (C) Heart, Kidney and Liver (D) Heart, Lungs and Brain

Last Answer : Answer : B

On the third day following onset of acute myocardial infarction, which enzyme estimation will have the best predictive value? (A) Serum AST (B) Serum CK (C) Serum ALT (D) Serum LDH

Description : On the third day following onset of acute myocardial infarction, which enzyme estimation will have the best predictive value? (A) Serum AST (B) Serum CK (C) Serum ALT (D) Serum LDH

Last Answer : Answer : D

Liver and skeletol measle disorders are characterized by on disk proportionate increase in which of the LDH isoenzyme fraction? (A) LDH-1 (B) LDH-1 and LDH-2 (C) LDH-3 and LDH-4 (D) LDH-2 and LDH-3 (E) LDH-5

Description : Liver and skeletol measle disorders are characterized by on disk proportionate increase in which of the LDH isoenzyme fraction? (A) LDH-1 (B) LDH-1 and LDH-2 (C) LDH-3 and LDH-4 (D) LDH-2 and LDH-3 (E) LDH-5

Last Answer : Answer : C

Which enzyme estimation will be helpful in differentiating the elevated serum ALP found in obstructive jaundice as well as bone disorders? (A) Serum AST (B) Serum ALT (C) Serum LDH (D) Serum γ-GT

Description : Which enzyme estimation will be helpful in differentiating the elevated serum ALP found in obstructive jaundice as well as bone disorders? (A) Serum AST (B) Serum ALT (C) Serum LDH (D) Serum γ-GT

Last Answer : Answer : D

If results of the serum bilirubin, serum ALP, LDH and AST determinations suggest obstructive jaundice, the best confirmatory test would be the estimation of (A) Serum ALT (B) Serum 5’ nucleotidase (C) Serum Pseudo cholinesterase (D) None of these

Description : If results of the serum bilirubin, serum ALP, LDH and AST determinations suggest obstructive jaundice, the best confirmatory test would be the estimation of (A) Serum ALT (B) Serum 5’ nucleotidase (C) Serum Pseudo cholinesterase (D) None of these

Last Answer : Answer : B

Patients with hepatocellular jaundice, as compared to those with purely obstructive jaundice tend to have (A) Lower serum ALP, LDH and AST activity (B) Lower serum ALP, Higher LDH and AST activity (C) Higher serum ALP, LDH and AST activity (D) Higher serum ALP, Lower LDH and AST activity

Description : Patients with hepatocellular jaundice, as compared to those with purely obstructive jaundice tend to have (A) Lower serum ALP, LDH and AST activity (B) Lower serum ALP, Higher LDH and AST activity (C) Higher serum ALP, LDH and AST activity (D) Higher serum ALP, Lower LDH and AST activity

Last Answer : Answer : B

The slow moving fraction of LDH is typically increased in pancreas with (A) Cerebrovascular accidents (B) Acute myocardial infarction (C) Acute pancreatitis (D) Acute viral hepatits

Description : The slow moving fraction of LDH is typically increased in pancreas with (A) Cerebrovascular accidents (B) Acute myocardial infarction (C) Acute pancreatitis (D) Acute viral hepatits

Last Answer : Answer : D

From the following myocardial infarction, the earliest serum enzyme to rise is (A) Creatine Kinase (B) GOT (C) GPT (D) LDH

Description : From the following myocardial infarction, the earliest serum enzyme to rise is (A) Creatine Kinase (B) GOT (C) GPT (D) LDH

Last Answer : Answer : A

Which of the following serum enzyme rises in myocardial infarction: (A) Creatine kinase (B) GOT (C) LDH (D) All of these

Description : Which of the following serum enzyme rises in myocardial infarction: (A) Creatine kinase (B) GOT (C) LDH (D) All of these

Last Answer : Answer : D

On the third day of onset of acute myocardial infarction the enzyme elevated is (A) Serum AST (B) Serum CK (C) Serum LDH (D) Serum ALT

Description : On the third day of onset of acute myocardial infarction the enzyme elevated is (A) Serum AST (B) Serum CK (C) Serum LDH (D) Serum ALT

Last Answer : Answer : C

In early stages of myocardial ischemia the most sensitive indicator is the measurement of the activity of (A) CPK (B) SGPT (C) SGOT (D) LDH

Description : In early stages of myocardial ischemia the most sensitive indicator is the measurement of the activity of (A) CPK (B) SGPT (C) SGOT (D) LDH

Last Answer : Answer : A

The isoenzymes of LDH (A) Differ only in a single amino acid (B) Differ in catalytic activity (C) Exist in 5 forms depending on M and H monomer contents (D) Occur as monomers

Description : The isoenzymes of LDH (A) Differ only in a single amino acid (B) Differ in catalytic activity (C) Exist in 5 forms depending on M and H monomer contents (D) Occur as monomers

Last Answer : Answer : C

Hepatocellular jaundice as compared to pure obstructive type of jaundice is characterized by (A) Increased serum alkaline phosphate, LDH and ALT (B) Decreased serum alkaline phosphatase, LDH and ALT (C) Increased serum alkaline phosphatase and decreased levels of LDH and ALT (D) Decreased serum alkaline phosphatase and increased serum LDH and ALT

Description : Hepatocellular jaundice as compared to pure obstructive type of jaundice is characterized by (A) Increased serum alkaline phosphate, LDH and ALT (B) Decreased serum alkaline phosphatase, LDH and ALT (C ... levels of LDH and ALT (D) Decreased serum alkaline phosphatase and increased serum LDH and ALT

Last Answer : Answer : D

What is the advantage of CK estimation over LDH estimation to identify myocardial infarction?

Description : What is the advantage of CK estimation over LDH estimation to identify myocardial infarction?

Last Answer : The CK level starts to rise within three hours of infarction. Therefore, CK estimation is very useful to detect early cases, where ECG changes may be ambiguous. The CK level is not increased in hemolysis or in congestive cardiac failure; and therefore CK has an advantage over LDH.

LDH level in blood is increased in which conditions?

Description : LDH level in blood is increased in which conditions?

Last Answer : Myocardial infarction, hemolytic anemias, muscular dystrophy, carcinomas, leukemias, and any condition which causes necrosis of body cells.

How do you separate LDH iso-enzymes in laboratory?

Description : How do you separate LDH iso-enzymes in laboratory?

Last Answer : By cellulose acetate electrophoresis at pH 8.6.

Under normal conditions, food proteins are generally readily digested upto the present (A) 67 to 73 (B) 74 to 81 (C) 82 to 89 (D) 90 to 97

Description : Under normal conditions, food proteins are generally readily digested upto the present (A) 67 to 73 (B) 74 to 81 (C) 82 to 89 (D) 90 to 97

Last Answer : Answer : D

What can cause Low Lymphocyte count and elevated LDH?

Description : What can cause Low Lymphocyte count and elevated LDH?

Last Answer : Feel Free to Answer

LDH isoenzymes?

Description : LDH isoenzymes?

Last Answer : DefinitionLDH isoenzymes is a test to check how much lactate dehydrogenase (LDH) is in the blood.Alternative NamesLD; Lactic (lactate) dehydrogenase isoenzymesHow the test is performedBlood is typically drawn ... , and the puncture site is covered to stop any bleeding.In infants or young child

What is the difference between LDH and LDL cholesterol levels?

Description : What is the difference between LDH and LDL cholesterol levels?

Last Answer : LDL cholesterol levels are the calculation of bad levels in your body while HDL is considered to by the levels of good cholesterol in your body. Good cholesterol ratings can be maintained with proper exercise and diet.

patent is presented with SOB. On Xray he has cardiomegaly and rt. pleural effusion. pleural aspiration reveals: protein is <30, LDH <200 IU. dx: CHF. pneumonia. TB hyperproteinemia.

Description : patent is presented with SOB. On Xray he has cardiomegaly and rt. pleural effusion. pleural aspiration reveals: protein is

Last Answer : CHF.

Normal value of plasma total proteins varies between (A) 3–4 gm/100ml (B) 6–8 gm/100ml (C) 10–12 gm/100ml (D) 14–16 gm/100ml

Description : Normal value of plasma total proteins varies between (A) 3–4 gm/100ml (B) 6–8 gm/100ml (C) 10–12 gm/100ml (D) 14–16 gm/100ml

Last Answer : Answer : B

The digestability of certain denatured proteins by proteolytic enzymes (A) Decreases (B) Increases (C) Normal (D) None of these

Description : The digestability of certain denatured proteins by proteolytic enzymes (A) Decreases (B) Increases (C) Normal (D) None of these

Last Answer : Answer : A

The highest concentration of proteins is present in (A) Plasma (B) Interstitial fluid (C) Interstitial fluid (D) Transcellular fluid

Description : The highest concentration of proteins is present in (A) Plasma (B) Interstitial fluid (C) Interstitial fluid (D) Transcellular fluid

Last Answer : Answer : C

All the following statements about protooncogenes are true except (A) They are present in human beings (B) They are present in healthy cells (C) Proteins encoded by them are essential (D) They are expressed only when a healthy cell has been transformed into a cancer cell

Description : All the following statements about protooncogenes are true except (A) They are present in human beings (B) They are present in healthy cells (C) Proteins encoded by them are essential (D) They are expressed only when a healthy cell has been transformed into a cancer cell

Last Answer : Answer : D

Silencer elements (A) Are trans-acting factors (B) Are present between promoters and the structural genes (C) Decrease the expression of some structural genes (D) Encode specific repressor proteins

Description : Silencer elements (A) Are trans-acting factors (B) Are present between promoters and the structural genes (C) Decrease the expression of some structural genes (D) Encode specific repressor proteins

Last Answer : Answer : C

Receptors for thyroid hormones are present (A) On the cell membrane (B) Across the cell membrane (C) Inside the cells (D) In association with G-proteins

Description : Receptors for thyroid hormones are present (A) On the cell membrane (B) Across the cell membrane (C) Inside the cells (D) In association with G-proteins

Last Answer : Answer : C

The nucleotide binding site of G-proteins is present on their (A) α-Subunit (B) β-Subunit α- and β- (C) γ-Subunit (D) δ-Subunit

Description : The nucleotide binding site of G-proteins is present on their (A) α-Subunit (B) β-Subunit α- and β- (C) γ-Subunit (D) δ-Subunit

Last Answer : Answer : A

The proteins present in maize are deficient in (A) Lysine (B) Threonine (C) Tryptophan (D) Tyrosine

Description : The proteins present in maize are deficient in (A) Lysine (B) Threonine (C) Tryptophan (D) Tyrosine

Last Answer : Answer : C

Number of amino acids present in plants, animals and microbial proteins: (A) 20 (B) 80 (C) 150 (D) 200

Description : Number of amino acids present in plants, animals and microbial proteins: (A) 20 (B) 80 (C) 150 (D) 200

Last Answer : Answer : D

Number of amino acids present in the dietary proteins: (A) 22 (B) 23 (C) 20 (D) 19

Description : Number of amino acids present in the dietary proteins: (A) 22 (B) 23 (C) 20 (D) 19

Last Answer : Answer : C

Number of amino acids present in the plant, animal and microbial proteins: (A) 20 (B) 80 (C) 150 (D) 200

Description : Number of amino acids present in the plant, animal and microbial proteins: (A) 20 (B) 80 (C) 150 (D) 200

Last Answer : Answer : A

CD 3 complex and p 56lck proteins are present in (A) Cytotoxic T cells (B) Helper T cells (C) Both (A) and (B) (D) None of these

Description : CD 3 complex and p 56lck proteins are present in (A) Cytotoxic T cells (B) Helper T cells (C) Both (A) and (B) (D) None of these

Last Answer : Answer : D

MHC class II proteins are present on the surface of (A) All cells (B) B lymphocytes only (C) Macrophages only (D) Macrophages and B lymphocytes

Description : MHC class II proteins are present on the surface of (A) All cells (B) B lymphocytes only (C) Macrophages only (D) Macrophages and B lymphocytes

Last Answer : Answer : D

MHC class I proteins are present on the surface of (A) B cells only (B) T cells only (C) Macrophages only(D) All cells

Description : MHC class I proteins are present on the surface of (A) B cells only (B) T cells only (C) Macrophages only(D) All cells

Last Answer : Answer : D

An example of α-amino acid not present in proteins but essential in mammalian metabolism is (A) 3-Amino 3-hydroxypropanoic acid (B) 2-Amino 3-hydroxybutanoic acid (C) 2-Amino 4-mercaptobutanoic acid (D) 2-Amino 3-mercaptopropanoic acid

Description : An example of α-amino acid not present in proteins but essential in mammalian metabolism is (A) 3-Amino 3-hydroxypropanoic acid (B) 2-Amino 3-hydroxybutanoic acid (C) 2-Amino 4-mercaptobutanoic acid (D) 2-Amino 3-mercaptopropanoic acid

Last Answer : Answer : C

An example of -amino acid not present in proteins but essential in mammalian metabolism is (A) 3-Amino 3-hydroxypropanoic acid (B) 2-Amino 3-hydroxybutanoic acid (C) 2-Amino 4-mercaptobutanoic acid (D) 2-Amino 3-mercaptopropanoic acid

Description : An example of -amino acid not present in proteins but essential in mammalian metabolism is (A) 3-Amino 3-hydroxypropanoic acid (B) 2-Amino 3-hydroxybutanoic acid (C) 2-Amino 4-mercaptobutanoic acid (D) 2-Amino 3-mercaptopropanoic acid

Last Answer : (C) 2-Amino 4-mercaptobutanoic acid

Which of the following features is predicted by the Nicolson–Singer fluid mosaic model of biological membranes? (A) Membrane lipids do not diffuse laterally (B) Membrane lipid is primarily in a monolayer form (C) Membrane lipids freely flip-flop (D) Membrane proteins may diffuse laterally

Description : Which of the following features is predicted by the Nicolson–Singer fluid mosaic model of biological membranes? (A) Membrane lipids do not diffuse laterally (B) Membrane lipid is primarily in a monolayer form (C) Membrane lipids freely flip-flop (D) Membrane proteins may diffuse laterally

Last Answer : Answer : D

Transition temperature of membranes may be affected by the following constituent of membranes: (A) Peripheral proteins (B) Integral proteins (C) Cholesterol (D) Oligosachharides

Description : Transition temperature of membranes may be affected by the following constituent of membranes: (A) Peripheral proteins (B) Integral proteins (C) Cholesterol (D) Oligosachharides

Last Answer : Answer : C

Bence Jones proteins may be excreted in urine of patients suffering from (A) Tuberculosis (B) Diabetes mellitus (C) Multiple myeloma (D) Hyperthyroidism

Description : Bence Jones proteins may be excreted in urine of patients suffering from (A) Tuberculosis (B) Diabetes mellitus (C) Multiple myeloma (D) Hyperthyroidism

Last Answer : Answer : C

Non essential amino acids (A) Are not components of tissue proteins (B) May be synthesized in the body from essential amino acids (C) Have no role in the metabolism (D) May be synthesized in the body in diseased states

Description : Non essential amino acids (A) Are not components of tissue proteins (B) May be synthesized in the body from essential amino acids (C) Have no role in the metabolism (D) May be synthesized in the body in diseased states

Last Answer : Answer : B

Non essential amino acids (A) Are not components of tissue proteins (B) May be synthesized in the body from essential amino acids (C) Have no role in the metabolism (D) May be synthesized in the body in diseased states

Description : Non essential amino acids (A) Are not components of tissue proteins (B) May be synthesized in the body from essential amino acids (C) Have no role in the metabolism (D) May be synthesized in the body in diseased states

Last Answer : (B) May be synthesized in the body from essential amino acids

Which statement about hormone types is correct? A) Non-steroid hormones activate an enzyme cascade. B) Steroid hormones regulate the production of a particular protein. C) Non-steroid hormones are either amino acids, peptides, or proteins. D) Steroid hormones all have four carbon rings with different side chains. E) All of the choices are correct.

Description : Which statement about hormone types is correct? A) Non-steroid hormones activate an enzyme cascade. B) Steroid hormones regulate the production of a particular protein. C) Non-steroid hormones are ... all have four carbon rings with different side chains. E) All of the choices are correct.

Last Answer : E) All of the choices are correct.

Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those that catalyze the production of cAMP (C) cause release of the catalytic subunit upon binding of the hormone (D) are not very specific and bind a number of different hormones

Description : Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those ... binding of the hormone (D) are not very specific and bind a number of different hormones

Last Answer : Answer : B

The chemical score of different proteins is calculated in terms of (A) Egg proteins (B) Milk proteins (C) Fish proteins (D) Wheat proteins

Description : The chemical score of different proteins is calculated in terms of (A) Egg proteins (B) Milk proteins (C) Fish proteins (D) Wheat proteins

Last Answer : Answer : A

Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

Description : Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

Last Answer : Answer : B