The apolipoprotein which acts as ligand for LDL receptor is (A) B-48 (B) B-100 (C) A (D) C

The apolipoprotein which acts as ligand for LDL receptor is (A) B-48 (B) B-100 (C) A (D) C
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Answer : B
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Apolipoprotein A-I acts as (A) Enzyme activator (B) Ligand for receptor (C) Both (A) and (B) (D) None of these

Description : Apolipoprotein A-I acts as (A) Enzyme activator (B) Ligand for receptor (C) Both (A) and (B) (D) None of these

Last Answer : Answer : C

Apolipoprotein B-48 is present in (A) Chylomicrons (B) VLDL (C) LDL (D) HDL

Description : Apolipoprotein B-48 is present in (A) Chylomicrons (B) VLDL (C) LDL (D) HDL

Last Answer : Answer : A

Apolipoprotien B-100 acts as (A) Enzyme activator (B) Ligand for receptor (C) Both (A) and (B) (D) None of these

Description : Apolipoprotien B-100 acts as (A) Enzyme activator (B) Ligand for receptor (C) Both (A) and (B) (D) None of these

Last Answer : Answer : B

LDL receptor is specific for (A) Apo B-48 and Apo B 100 (B) Apo B-48 and Apo E (C) Apo B-100 and Apo D (D) Apo B-100 and apo D

Description : LDL receptor is specific for (A) Apo B-48 and Apo B 100 (B) Apo B-48 and Apo E (C) Apo B-100 and Apo D (D) Apo B-100 and apo D

Last Answer : Answer : C

Apolipoprotein B-100 is present in (A) Chylomicrons (B) VLDL only (C) LDL only (D) VLDL and LDL

Description : Apolipoprotein B-100 is present in (A) Chylomicrons (B) VLDL only (C) LDL only (D) VLDL and LDL

Last Answer : Answer : B

The primary biochemical lesion in homozygote with familial hypercholesterolemia (type IIa) is (A) Loss of feed back inhibition of HMG reductase (B) Loss of apolipoprotein B (C) Increased production of LDL from VLDL (D) Functional deficiency of plasma membrane receptors for LDL

Description : The primary biochemical lesion in homozygote with familial hypercholesterolemia (type IIa) is (A) Loss of feed back inhibition of HMG reductase (B) Loss of apolipoprotein B (C) Increased production of LDL from VLDL (D) Functional deficiency of plasma membrane receptors for LDL

Last Answer : Answer : D

The apolipoprotein which from the integral component of VLDL is (A) B-100 (B) B-48 (C) A (D) D

Description : The apolipoprotein which from the integral component of VLDL is (A) B-100 (B) B-48 (C) A (D) D

Last Answer : Answer : A

The apolipoprotein which forms the integral component of chylomicron is (A) B-100 (B) B-48 (C) C (D) D

Description : The apolipoprotein which forms the integral component of chylomicron is (A) B-100 (B) B-48 (C) C (D) D

Last Answer : Answer : B

Apolipoprotein B-48 is synthesized in (A) Adipose tissue (B) Liver (C) Intestine (D) Liver and intestine

Description : Apolipoprotein B-48 is synthesized in (A) Adipose tissue (B) Liver (C) Intestine (D) Liver and intestine

Last Answer : Answer : C

The apolipoprotein which acts as actiator of extrahepatic lipoprotein is (A) Apo-A (B) Apo-B (C) Apo-C (D) Apo-D

Description : The apolipoprotein which acts as actiator of extrahepatic lipoprotein is (A) Apo-A (B) Apo-B (C) Apo-C (D) Apo-D

Last Answer : Answer : C

The apolipoprotein which acts as activator of LCAT is (A) A-I (B) A-IV (C) C-II (D) D

Description : The apolipoprotein which acts as activator of LCAT is (A) A-I (B) A-IV (C) C-II (D) D

Last Answer : Answer : A

G-proteins: a. are activated by the binding of an extracellular ligand to a membrane receptor b. can be mutated in tumour cells c. mediate the action of glucocorticoid hormone d. they are inactivated by cholera toxins

Description : G-proteins: a. are activated by the binding of an extracellular ligand to a membrane receptor b. can be mutated in tumour cells c. mediate the action of glucocorticoid hormone d. they are inactivated by cholera toxins

Last Answer : are activated by the binding of an extracellular ligand to a membrane receptor

Apolipoprotein B-100 is synthesised in (A) Adipose tissue (B) Liver (C) Intestine (D) Liver and intestine

Description : Apolipoprotein B-100 is synthesised in (A) Adipose tissue (B) Liver (C) Intestine (D) Liver and intestine

Last Answer : Answer : B

What is ldl receptor responsible for?

Description : What is ldl receptor responsible for?

Last Answer : Need answer

The rate limiting step in cholesterol biosynthesis is one of the followings : (A) LDL-receptor concentration (B) VLDL secretion (C) Mevalonic acid formation (D) Co-enzyme A formation

Description : The rate limiting step in cholesterol biosynthesis is one of the followings : (A) LDL-receptor concentration (B) VLDL secretion (C) Mevalonic acid formation (D) Co-enzyme A formation

Last Answer : (C) Mevalonic acid formation

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Last Answer : A. It can induce endometrial proliferation in postmenopausal women

Apolipoprotein C-II is an activator of (A) Lecithin cholesterola acyl transferase (B) Phospholipase C (C) Extrahepatic lipoprotein lipase (D) Hepatic lipoprotein lipase

Description : Apolipoprotein C-II is an activator of (A) Lecithin cholesterola acyl transferase (B) Phospholipase C (C) Extrahepatic lipoprotein lipase (D) Hepatic lipoprotein lipase

Last Answer : Answer : C

The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine

Description : The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine

Last Answer : Answer : C

The bond formed between the transition metal ion and ligand is ?

Description : The bond formed between the transition metal ion and ligand is ?

Last Answer : Co-ordination covalent bond Transitional metal Ions can form complex compounds by. By accepting the lone pair of electrons from ligand

The hormone which acts through intracellular receptor protein is

Description : The hormone which acts through intracellular receptor protein is

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Cell regulation can be thought of as the effector side of cell communication. Most commonly cell regulation occurs by means of extracellular chemical messengers. Which of the following statement(s) is/are true concerning these messengers? a. Paracrine regulation involves a messenger which is produced and acts systemically b. The extracellular signal or stimulus is received by a receptor on or in the target cell c. Neurocrine regulation depends on a physical connection between the neuron and the target cell d. Most hormones, local mediators, and neurotransmitters readily cross the cell plasma membrane

Description : Cell regulation can be thought of as the effector side of cell communication. Most commonly cell regulation occurs by means of extracellular chemical messengers. Which of the following statement(s ... d. Most hormones, local mediators, and neurotransmitters readily cross the cell plasma membrane

Last Answer : Answer: b, c Depending on how the extracellular messenger arrives, cell regulation can be classified as paracrine, endocrine, or neurocrine. In paracrine regulation, a chemical messenger ... , local mediators, and neurotransmitters are water-soluble and cannot readily cross the plasma membrane

The following are true about parathyroid hormone a. it is an 84 amino acid peptide hormone b. it increases calcium absorption from the gastrointestinal tract c. it acts on a cell surface receptor that increases intracellular cyclic AMP d. all above

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Last Answer : all above

Aliskiren acts by (A) inhibiting the conversion of Angiotensin I to II (B) inhibiting the release of rennin (C) inhibiting the binding of Angiotensin II to the receptor (D) inhibiting the action of aldosterone

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Last Answer : (B) inhibiting the release of rennin

Select the opioid analgesic which acts primarily through κ (kappa) opioid receptor: A. Pentazocine B. Methadone C. Buprenorphine D. Pethidine

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Last Answer : D. All of the above

6.2 Which hormone acts through a cytoplasmic receptor: A. Calcitriol B. Prolactin C. Vasopressin D. None of the abov

Description : 6.2 Which hormone acts through a cytoplasmic receptor: A. Calcitriol B. Prolactin C. Vasopressin D. None of the abov

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Apolipoprotein CII?

Description : Apolipoprotein CII?

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Explain the following : (i) Low spin octahedral complexes of nickel are not known. (ii) The π-complexes are known for transition elements only. (iii) CO is a stronger ligand than NTL, for many metals. -Chemistry

Description : Explain the following : (i) Low spin octahedral complexes of nickel are not known. (ii) The π-complexes are known for transition elements only. (iii) CO is a stronger ligand than NTL, for many metals. -Chemistry

Last Answer : (i) The electronic configuration of Ni is [Ar] 3d8 4s2 which shows that it can only form two types of complexes i.e. square planar (dsp2) in presence of strong ligand and tetrahedral (sp3) in ... more splitting of d-orbitals and moreover it is also able to form π bond due to back bonding.

Giving a suitable example for each, explain the following : (i) Crystal field splitting (ii) Linkage isomerism (iii) Ambidentate ligand -Chemistry

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Last Answer : i) Crystal field splitting: It is the splitting of the degenerate energy levels due to the presence of ligands. When ligand approaches a transition metal ion, the degenerate d-orbitals split into two ... the nitrogen atom or one of the oxygen atoms. Example : - SCN thiocyanate, - NCS isothiocyanate

Assertion :- Oxidation number of `Ni` in `[Ni(CO)_(4)]` is zero. ltbr. Reason :- Nickel is bonded to neutral ligand, carbonyl.

Description : Assertion :- Oxidation number of `Ni` in `[Ni(CO)_(4)]` is zero. ltbr. Reason :- Nickel is bonded to neutral ligand, carbonyl.

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The strong field ligand is "

Description : The strong field ligand is "

Last Answer : The strong field ligand is " A. `SCN^(-)` B. `NO_(2)^(-)` C. `I^(-)` D. `S^(2-)`

Which molecule/ion among the following cannot act as a ligand in complex compounds ?

Description : Which molecule/ion among the following cannot act as a ligand in complex compounds ?

Last Answer : Which molecule/ion among the following cannot act as a ligand in complex compounds ? A. `CH_(4)` B. `CN^(-)` C. `Br^(-)` D. `CO`

Nickel `(Z=28)` combines with a uninegative monodentate ligand `X^(-)` to form a paramagnetic complex `[NiX_4]^(2-)`. The number of unpaired electron(

Description : Nickel `(Z=28)` combines with a uninegative monodentate ligand `X^(-)` to form a paramagnetic complex `[NiX_4]^(2-)`. The number of unpaired electron(

Last Answer : Nickel `(Z=28)` combines with a uninegative monodentate ligand `X^(-)` to form a paramagnetic complex ... C. one, square planar D. two, square planar

Ethylene diamine is an example of a ……… ligand:

Description : Ethylene diamine is an example of a ……… ligand:

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(a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wave

Description : (a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wave

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Which one is ambidentate ligand?

Description : Which one is ambidentate ligand?

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What is an analyte or ligand ?

Description : What is an analyte or ligand ?

Last Answer : The substance whose concentration is to be determined is called as an analyte or ligand.

The following are true about the synaptic potential: a. the Na+ and K+ currents occurs simultaneously b. is a graded potential c. the channel is ligand-gated d. the post-synaptic potential is inhibitory when depolarizing

Description : The following are true about the synaptic potential: a. the Na+ and K+ currents occurs simultaneously b. is a graded potential c. the channel is ligand-gated d. the post-synaptic potential is inhibitory when depolarizing

Last Answer : the Na+ and K+ currents occurs simultaneously

Denticity of Ethylene diamine ligand is? a) Six b) Two c) Three d) Four

Description : Denticity of Ethylene diamine ligand is? a) Six b) Two c) Three d) Four

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Receptors perform the following function/functions: A. Ligand recognition B. Signal transduction C. Both ligand recognition and signal transduction D. Disposal of agonists and antagonists

Description : Receptors perform the following function/functions: A. Ligand recognition B. Signal transduction C. Both ligand recognition and signal transduction D. Disposal of agonists and antagonists

Last Answer : C. Both ligand recognition and signal transduction

Receptors perform the following function/functions: A. Ligand recognition B. Signal transduction C. Both ligand recognition and signal transduction D. Disposal of agonists and antagonists

Description : Receptors perform the following function/functions: A. Ligand recognition B. Signal transduction C. Both ligand recognition and signal transduction D. Disposal of agonists and antagonists

Last Answer : C. Both ligand recognition and signal transduction

Correct ordering of lipoprotein molecules from lowest to the greater density is (A) LDL, IDL, VLDL, chylomicron (B) Chylomicron, VLDL, IDL, LDL (C) VLDL, IDL, LDL, chylomicron (D) LDL, VLDL, IDL, chylomicron

Description : Correct ordering of lipoprotein molecules from lowest to the greater density is (A) LDL, IDL, VLDL, chylomicron (B) Chylomicron, VLDL, IDL, LDL (C) VLDL, IDL, LDL, chylomicron (D) LDL, VLDL, IDL, chylomicron

Last Answer : Answer : B

The majority of absorbed fat appears in the forms of (A) HDL (B) Chylomicrone (C) VLDL (D) LDL

Description : The majority of absorbed fat appears in the forms of (A) HDL (B) Chylomicrone (C) VLDL (D) LDL

Last Answer : Answer : B

The lipoprotein with the fastest electrophoretic mobility and lowest TG content are (A) VLDL (B) LDL (C) HDL (D) Chylomicrones

Description : The lipoprotein with the fastest electrophoretic mobility and lowest TG content are (A) VLDL (B) LDL (C) HDL (D) Chylomicrones

Last Answer : Answer : C

Chylomicron, intermediate density lipoproteins (IDL), low density lipoproteins (LDL) and very low density lipoproteins (VLDL) all are serum lipoproteins. What is the correct ordering of these particles from the lowest to the greatest density? (A) LDL, IDL, VLDL, Chylomicron (B) Chylomicron, VLDL, IDL, LDL (C) VLDL, IDL, LDL, Chylomicron (D) Chylomicron, IDL, VLDL, LDL

Description : Chylomicron, intermediate density lipoproteins (IDL), low density lipoproteins (LDL) and very low density lipoproteins (VLDL) all are serum lipoproteins. What is the correct ordering of these particles from the lowest to ... , IDL, LDL (C) VLDL, IDL, LDL, Chylomicron (D) Chylomicron, IDL, VLDL, LDL

Last Answer : Answer : B

Which of the following lipoproteins would contribute to a measurement of plasma cholesterol in a normal individual following a 12 hr fast? (A) Chylomicrons (B) VLDL (C) Both VLDL and LDL (D) LDL

Description : Which of the following lipoproteins would contribute to a measurement of plasma cholesterol in a normal individual following a 12 hr fast? (A) Chylomicrons (B) VLDL (C) Both VLDL and LDL (D) LDL

Last Answer : Answer : D

The major source of cholesterol in arterial smooth muscle cells is from (A) IDL (B) LDL (C) HDL (D) Chylomicrons FATS AND FATTY ACID METABOLISM 101

Description : The major source of cholesterol in arterial smooth muscle cells is from (A) IDL (B) LDL (C) HDL (D) Chylomicrons FATS AND FATTY ACID METABOLISM 101

Last Answer : Answer : B

The first lipoprotein to be secreted by the liver is (A) VLDL (B) nascent VLDL (C) LDL (D) IDL

Description : The first lipoprotein to be secreted by the liver is (A) VLDL (B) nascent VLDL (C) LDL (D) IDL

Last Answer : Answer : B

Increase in blood of this class of lipoproteins is beneficial to ward off coronary heart disease: (A) HDL (B) LDL (C) VLDL (D) IDL

Description : Increase in blood of this class of lipoproteins is beneficial to ward off coronary heart disease: (A) HDL (B) LDL (C) VLDL (D) IDL

Last Answer : Answer : A