Polyadenylate tail is not present in mRNA synthesising (A) Globin (B) Histone (C) Apoferritin (D) Growth hormone

Polyadenylate tail is not present in mRNA synthesising (A) Globin (B) Histone (C) Apoferritin (D) Growth hormone
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Post-transcriptional modification of hnRNA involves all of the following except (A) Addition of 7-methylguanosine triphosphate cap (B) Addition of polyadenylate tail (C) Insertion of nucleotides (D) Deletion of introns

Description : Post-transcriptional modification of hnRNA involves all of the following except (A) Addition of 7-methylguanosine triphosphate cap (B) Addition of polyadenylate tail (C) Insertion of nucleotides (D) Deletion of introns

Last Answer : Answer : C

Apoferritin molecule is made up of (A) Four subunits (B) Eight subunits (C) Ten subunits (D) Twenty-four subunits

Description : Apoferritin molecule is made up of (A) Four subunits (B) Eight subunits (C) Ten subunits (D) Twenty-four subunits

Last Answer : Answer : D

Reverse transcriptase is capable of synthesising (A) RNA → DNA (B) DNA → RNA (C) RNA → RNA (D) DNA → DNA

Description : Reverse transcriptase is capable of synthesising (A) RNA → DNA (B) DNA → RNA (C) RNA → RNA (D) DNA → DNA

Last Answer : Answer : A

In contrast to eukaryot ic mRNA , prokaryotic mRNA (A) Can be polycistronic (B) Is synthesized with introns (C) Can only be monocistronic (D) Has a poly A tail

Description : In contrast to eukaryot ic mRNA , prokaryotic mRNA (A) Can be polycistronic (B) Is synthesized with introns (C) Can only be monocistronic (D) Has a poly A tail

Last Answer : Answer : A

The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Description : The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Last Answer : (4) Keratin Explanation: Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.

The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Description : The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Last Answer : Keratin

Number of chains in globin part of normal Hb: (A) 1 (B) 2 (C) 3 (D) 4

Description : Number of chains in globin part of normal Hb: (A) 1 (B) 2 (C) 3 (D) 4

Last Answer : Answer : D

The gut controls the entry of ingested iron in the body by: A. Regulating the availability of apoferritin which acts as the carrier of iron across the mucosal cell B. Regulating the turnover of apoferritin-ferritin interconversion in the mucosal cell C. Complexing excess iron to form ferritin which remains stored in the mucosal cell and is shed off D. Regulating the number of transferrin receptors on the mucosal cell

Description : The gut controls the entry of ingested iron in the body by: A. Regulating the availability of apoferritin which acts as the carrier of iron across the mucosal cell B. Regulating the turnover of ... mucosal cell and is shed off D. Regulating the number of transferrin receptors on the mucosal cell

Last Answer : C. Complexing excess iron to form ferritin which remains stored in the mucosal cell and is shed off

In the bacteria: (1) Mesosome is present (2) Nucleoid represents the genome (3) Ribosomes are found in cytoplasm (4) Histone proteins complexed with DNA

Description : In the bacteria: (1) Mesosome is present (2) Nucleoid represents the genome (3) Ribosomes are found in cytoplasm (4) Histone proteins complexed with DNA

Last Answer : Ans. ((a))

The eukaryotic genome differs from the prokaryotic genome because (a) the DNA is complexed with histone in prokaryotes (b) the DNA is circular and single stranded in prokaryotes (c) repetitive sequences are present in eukaryotes (d) genes in the former case are organised into operons.

Description : The eukaryotic genome differs from the prokaryotic genome because (a) the DNA is complexed with histone in prokaryotes (b) the DNA is circular and single stranded in prokaryotes (c) repetitive sequences are present in eukaryotes (d) genes in the former case are organised into operons.

Last Answer : (b) the DNA is circular and single stranded in prokaryotes

What is not True for DNA in prokaryotes a) present in the form of a compact structure called nucleoid b) the coils are maintained by non-histone basic proteins c) found in cytoplasm in a supercoiled condition d) packaged as nucleosomes along with histones

Description : What is not True for DNA in prokaryotes a) present in the form of a compact structure called nucleoid b) the coils are maintained by non-histone basic proteins c) found in cytoplasm in a supercoiled condition d) packaged as nucleosomes along with histones

Last Answer : b) the coils are maintained by non-histone basic proteins

Mitochondria and chloroplast are (A) semi-autonomous organelles (B) formed by division of pre-existing organelles and they contain DNA but lack protein synthesising machinery. Which one of the following options is correct? (a) (A) is true but (B) is false. (b) Both (A) and (B) are false. (c) Both (A) and (B) are correct. (d) (B) is true but (A) is false.

Description : Mitochondria and chloroplast are (A) semi-autonomous organelles (B) formed by division of pre-existing organelles and they contain DNA but lack protein synthesising machinery. Which one of the following options is correct? (a) ( ... Both (A) and (B) are correct. (d) (B) is true but (A) is false.

Last Answer : (a) (A) is true but (B) is false.

CPM is (A) Synthesising in concepts (B) Is built of activities oriented programme (C) Is based on time estimate (D) All the above

Description : CPM is (A) Synthesising in concepts (B) Is built of activities oriented programme (C) Is based on time estimate (D) All the above

Last Answer : (D) All the above

Trypsin has no action on (A) Hemoglobin (B) Albumin (C) Histone (D) DNA

Description : Trypsin has no action on (A) Hemoglobin (B) Albumin (C) Histone (D) DNA

Last Answer : Answer : D

The main protein found in milk is (1) Albumin (2) Globulin (3) Globin (4) Casein

Description : The main protein found in milk is (1) Albumin (2) Globulin (3) Globin (4) Casein

Last Answer : (4) Casein Explanation: The major proteins in milk are casein and whey. These two milk proteins are both excellent sources of all the essential amino acids, but they differ in one ... food source, casein supplies amino acids, carbohydrates, and the two inorganic elements calcium and phosphorus.

Which is the anticoagulant substance in blood? (1) Fibrinogen (2) Heparin (3) Thrombin (4) Globin

Description : Which is the anticoagulant substance in blood? (1) Fibrinogen (2) Heparin (3) Thrombin (4) Globin

Last Answer : (2) Heparin Explanation: Heparin, a highly sulfated glycosaminoglycan, is widely used as an inject able anticoagulant, and has the highest negative charge density of any known ... because blood anti-coagulation is achieved mostly by heparin sulfate proteoglyeans derived from endothelial cells.

. Sickle-cell anaemia is (a) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin (b) caused by a change in a single base pair of DNA (c) characterized by elongated sickle like RBCs with a nucleus (d) an autosomal linked dominant trait.

Description : . Sickle-cell anaemia is (a) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin (b) caused by a change in a single base pair of DNA (c) characterized by elongated sickle like RBCs with a nucleus (d) an autosomal linked dominant trait.

Last Answer : (b) caused by a change in a single base pair of DNA

Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement. (a) Both are due to a quantitative defect in globin chain synthesis. (b) Thalassemia is due to less synthesis of globin molecules. (c) Sickle cell anaemia is due to a quantitative problem of globin molecules. (d) Both are due to a qualitative defect in globin chain synthesis.

Description : Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement. (a) Both are due to a quantitative defect in globin chain synthesis. (b ... problem of globin molecules. (d) Both are due to a qualitative defect in globin chain synthesis.

Last Answer : (b) Thalassemia is due to less synthesis of globin molecules

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement : (1) Both are due to a quantitative defect in globin chain synthesis (2) Thalassemia is due to less synthesis of globin molecules (3) Sickel cell anemia is due to a quantitative problem of globin molecules (4) Both are due to a qualitative defect in globin chain synthesis

Description : Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement : (1) Both are due to a quantitative defect in globin chain synthesis (2 ... problem of globin molecules (4) Both are due to a qualitative defect in globin chain synthesis

Last Answer : (2) Thalassemia is due to less synthesis of globin molecules

The main protein found in milk is ______ (1) Albumin (2) Globulin (3) Globin (4) Casein

Description : The main protein found in milk is ______ (1) Albumin (2) Globulin (3) Globin (4) Casein

Last Answer : Casein

Which is the anti-coagulant substance in blood? (1) Fibrinogen (2) Heparin (3) Thrombin (4) Globin

Description : Which is the anti-coagulant substance in blood? (1) Fibrinogen (2) Heparin (3) Thrombin (4) Globin

Last Answer : Heparin

Splice sites are present in (A) Prokaryotic mRNA (B) Eukaryotic mRNA (C) Eukaryotic hnRNA (D) All of these

Description : Splice sites are present in (A) Prokaryotic mRNA (B) Eukaryotic mRNA (C) Eukaryotic hnRNA (D) All of these

Last Answer : Answer : C

Nonsense codons are present on (A) mRNA (B) tRNA (C) rRNA (D) None of these

Description : Nonsense codons are present on (A) mRNA (B) tRNA (C) rRNA (D) None of these

Last Answer : Answer : A

Anticodons are present on (A) Coding strand of DNA (B) mRNA (C) tRNA (D) rRNA

Description : Anticodons are present on (A) Coding strand of DNA (B) mRNA (C) tRNA (D) rRNA

Last Answer : Answer : C

Codons are present in (A) Template strand of DNA (B) mRNA (C) tRNA (D) rRNA

Description : Codons are present in (A) Template strand of DNA (B) mRNA (C) tRNA (D) rRNA

Last Answer : Answer : B

Thymine is present in (A) tRNA (B) Ribosomal RNA (C) Mammalian mRNA(D) Prokaryotic mRNA

Description : Thymine is present in (A) tRNA (B) Ribosomal RNA (C) Mammalian mRNA(D) Prokaryotic mRNA

Last Answer : Answer : A

Methylated purines and pyrimidines are characteristically present in (A) mRNA (B) hnRNA (C) tRNA (D) rRNA

Description : Methylated purines and pyrimidines are characteristically present in (A) mRNA (B) hnRNA (C) tRNA (D) rRNA

Last Answer : Answer : C

Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the cytoplasm. C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.

What are non-histone proteins? -Biology

Description : What are non-histone proteins? -Biology

Last Answer : answer:

What is histone ?

Description : What is histone ?

Last Answer : : Highly alkaline proteins are found in the nuclei of eukaryotic cells that are packaged in the nucleus of DNA to keep the structural unit of DNA in balance , called histones.

In which stage of the cell cycle are histone proteins synthesised in a eukaryotic cells ?

Description : In which stage of the cell cycle are histone proteins synthesised in a eukaryotic cells ?

Last Answer : In which stage of the cell cycle are histone proteins synthesised in a eukaryotic cells ? A. ... )` -stage of prophase D. During entire prophase

Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) Histone absent ( c ) Compartmentali

Description : Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) Histone absent ( c ) Compartmentali

Last Answer : Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) ... b and c C. a and c D. b and d

A single DNA molecule condensed into a compact structure in vivo by complexing with accessory histones or histone-like proteins.

Description : A single DNA molecule condensed into a compact structure in vivo by complexing with accessory histones or histone-like proteins.

Last Answer : Ans. Chromosome

Gene is (a) A segment of DNA or functional RNA (b) A segment of DNA and histone (c) A segment of DNA, RNA and histone (d) All of the above

Description : Gene is (a) A segment of DNA or functional RNA (b) A segment of DNA and histone (c) A segment of DNA, RNA and histone (d) All of the above

Last Answer : Ans:(a)

A cell-coded protein that is formed in response to infection, with most animal viruses, is called (a) histone (b) antibody (c) interferon (d) antigen.

Description : A cell-coded protein that is formed in response to infection, with most animal viruses, is called (a) histone (b) antibody (c) interferon (d) antigen.

Last Answer : (c) interferon

The association of histone H1 with a nucleosome indicates that (a) DNA replication is occurring (b) the DNA is condensed into a chromatin fibre (c) the DNA double helix is exposed (d) transcription is occurring.

Description : The association of histone H1 with a nucleosome indicates that (a) DNA replication is occurring (b) the DNA is condensed into a chromatin fibre (c) the DNA double helix is exposed (d) transcription is occurring.

Last Answer : (b) the DNA is condensed into a chromatin fibre

At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell? (a) During G2 stage of prophase (b) During S-phase (c) During entire prophase (d) During telophase

Description : At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell? (a) During G2 stage of prophase (b) During S-phase (c) During entire prophase (d) During telophase

Last Answer : (b) During S-phase

The association of histone H1 with a nucleosome indicates: (1) DNA replication is occurring. (2) The DNA is condensed into a Chromatin Fibre. (3) The DNA double helix is exposed. (4) Transcription is occurring.

Description : The association of histone H1 with a nucleosome indicates: (1) DNA replication is occurring. (2) The DNA is condensed into a Chromatin Fibre. (3) The DNA double helix is exposed. (4) Transcription is occurring.

Last Answer : (2) The DNA is condensed into a Chromatin Fibre.

Which of the following is NOT a component of chromosomes? a) histones b) non-histone proteins c) DNA d) RNA

Description : Which of the following is NOT a component of chromosomes? a) histones b) non-histone proteins c) DNA d) RNA

Last Answer : ANSWER: D -- RNA

Which hormone causes acromegaly if present in abnormally high concentrations in an adult? A) growth hormone B) antidiuretic hormone C) gonadotropic hormones D) thyroid-stimulating hormone E) adrenocorticotropic hormone

Description : Which hormone causes acromegaly if present in abnormally high concentrations in an adult? A) growth hormone B) antidiuretic hormone C) gonadotropic hormones D) thyroid-stimulating hormone E) adrenocorticotropic hormone

Last Answer : A) growth hormone

The first protein synthesized by recombinant DNA technology was (A) Streptokinase (B) Human growth hormone (C) Tissue plasminogen activator (D) Human insulin

Description : The first protein synthesized by recombinant DNA technology was (A) Streptokinase (B) Human growth hormone (C) Tissue plasminogen activator (D) Human insulin

Last Answer : Answer : D

Which of the following hormones is not involved in carbohydrate metabolism? (A) ACTH (B) Glucagon (C) Vasopressin (D) Growth hormone

Description : Which of the following hormones is not involved in carbohydrate metabolism? (A) ACTH (B) Glucagon (C) Vasopressin (D) Growth hormone

Last Answer : Answer : C

It is unique that the following single antidiabetogenic hormone effectively counter acts the several diabetogenic hormones: (A) Glucagon (B) Glucocorticoids (C) Insulin (D) Growth hormone

Description : It is unique that the following single antidiabetogenic hormone effectively counter acts the several diabetogenic hormones: (A) Glucagon (B) Glucocorticoids (C) Insulin (D) Growth hormone

Last Answer : Answer : C

The sequence of amino acids in human growth hormone and the synthesis were done by (A) Sanger (B) Krebs (C) Chah Holi (D) Molisch

Description : The sequence of amino acids in human growth hormone and the synthesis were done by (A) Sanger (B) Krebs (C) Chah Holi (D) Molisch

Last Answer : Answer : C

Which one of the following is not liberated by the adenohypophysis? (A) Growth hormone (B) TSH (C) ACTH (D) Gonadotropin

Description : Which one of the following is not liberated by the adenohypophysis? (A) Growth hormone (B) TSH (C) ACTH (D) Gonadotropin

Last Answer : Answer : D

Which of the following hormones are synthesized as prehormones (A) Vasopressin and oxytocin (B) Growth hormone and insulin (C) Insulin and parathyroid hormone (D) Insulin and Glucagon

Description : Which of the following hormones are synthesized as prehormones (A) Vasopressin and oxytocin (B) Growth hormone and insulin (C) Insulin and parathyroid hormone (D) Insulin and Glucagon

Last Answer : Answer : C

Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Description : Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Phosphorylated IRS-1 activates GRB-2 which is (A) G-protein receptor binding protein-2 (B) Growth factor receptor binding protein-2 (C) Growth hormone receptor binding protein-2 (D) Glucocorticoid receptor binding protein-2 226 MCQs IN BIOCHEMISTRY

Description : Phosphorylated IRS-1 activates GRB-2 which is (A) G-protein receptor binding protein-2 (B) Growth factor receptor binding protein-2 (C) Growth hormone receptor binding protein-2 (D) Glucocorticoid receptor binding protein-2 226 MCQs IN BIOCHEMISTRY

Last Answer : Answer : B

Binding of growth hormone to its receptor results in increased transcription of (A) c-fos gene (B) c-myc gene (C) p-53 gene (D) None of these

Description : Binding of growth hormone to its receptor results in increased transcription of (A) c-fos gene (B) c-myc gene (C) p-53 gene (D) None of these

Last Answer : Answer : A

Binding of growth hormone to its receptor results in phosphorylation of (A) JAK-2 (B) Growth hormone receptor (C) STATs (D) All of these

Description : Binding of growth hormone to its receptor results in phosphorylation of (A) JAK-2 (B) Growth hormone receptor (C) STATs (D) All of these

Last Answer : Answer : D