Mitochondrial DNA is present in (A) Bacteria (B) Viruses (C) Eukaryotes (D) All of these

Mitochondrial DNA is present in (A) Bacteria (B) Viruses (C) Eukaryotes (D) All of these
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Answer :  C
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Restriction endonucleases are present in (A) Viruses (B) Bacteria (C) Eukaryotes (D) All of these

Description : Restriction endonucleases are present in (A) Viruses (B) Bacteria (C) Eukaryotes (D) All of these

Last Answer : Answer : B

Non-coding sequence are present in the genes of (A) Bacteria (B) Viruses (C) Eukaryotes (D) All of these

Description : Non-coding sequence are present in the genes of (A) Bacteria (B) Viruses (C) Eukaryotes (D) All of these

Last Answer : Answer : C

Introns are present in DNA of (A) Viruses (B) Bacteria (C) Man (D) All of these

Description : Introns are present in DNA of (A) Viruses (B) Bacteria (C) Man (D) All of these

Last Answer : Answer : C

Some DNA is present in mitochondria of (A) Prokaryotes (B) Eukaryotes (C) Both (A) and (B) (D) None of these

Description : Some DNA is present in mitochondria of (A) Prokaryotes (B) Eukaryotes (C) Both (A) and (B) (D) None of these

Last Answer : Answer : B

All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is (a) isocitrate dehydrogenase (b) malate dehydrogenase (c) succinate dehydrogenase (d) lactate dehydrogenase.

Description : All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is (a) isocitrate dehydrogenase (b) malate dehydrogenase (c) succinate dehydrogenase (d) lactate dehydrogenase.

Last Answer : (c) succinate dehydrogenase

Thermococcus, Methanococcus and Methano- bacterium exemplify (a) bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria (b) bacteria that contain a cytoskeleton and ribosomes (c) archaebacteria that contain protein homologous to eukaryotic core histones (d) archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled

Description : Thermococcus, Methanococcus and Methano- bacterium exemplify (a) bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria (b) bacteria that ... that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled

Last Answer : (c) archaebacteria that contain protein homologous to eukaryotic core histones

The process of conjugation in bacteria requires that _____. a. Two Types Of Viruses Be Present. b. The Conjugating Bacteria Be Deprived Of Nutrients. c. Two Bacteria Exchange Dna. d. Two Live Bacteria Come Together.

Description : The process of conjugation in bacteria requires that _____. a. Two Types Of Viruses Be Present. b. The Conjugating Bacteria Be Deprived Of Nutrients. c. Two Bacteria Exchange Dna. d. Two Live Bacteria Come Together.

Last Answer : d. Two Live Bacteria Come Together.

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

The DNA polymerase commonly used in polymerase chain reaction is obtained from (A) E. coli (B) Yeast (C) T.aquaticus (D) Eukaryotes

Description : The DNA polymerase commonly used in polymerase chain reaction is obtained from (A) E. coli (B) Yeast (C) T.aquaticus (D) Eukaryotes

Last Answer : Answer : C

Ciprofloxacin inhibits the synthesis of (A) DNA in prokaryotes (B) DNA in prokaryotes and eukaryotes (C) RNA in prokaryotes (D) RNA in prokaryotes and eukaryotes

Description : Ciprofloxacin inhibits the synthesis of (A) DNA in prokaryotes (B) DNA in prokaryotes and eukaryotes (C) RNA in prokaryotes (D) RNA in prokaryotes and eukaryotes

Last Answer : Answer : A

α-Amanitin inhibits (A) DNA polymerase II of prokaryotes (B) DNA polymerase α of eukaryotes (C) RNA polymerase II of eukaryotes (D) RNA-dependent DNA polymerase

Description : α-Amanitin inhibits (A) DNA polymerase II of prokaryotes (B) DNA polymerase α of eukaryotes (C) RNA polymerase II of eukaryotes (D) RNA-dependent DNA polymerase

Last Answer : Answer : C

The only correct statement about oncoviruses is (A) All the oncoviruses are RNA viruses (B) Reverse transcriptase is present in all oncoviruses (C) Viral oncogenes are identical to human protooncogens (D) Both DNA and RNA viruses can be oncoviruses

Description : The only correct statement about oncoviruses is (A) All the oncoviruses are RNA viruses (B) Reverse transcriptase is present in all oncoviruses (C) Viral oncogenes are identical to human protooncogens (D) Both DNA and RNA viruses can be oncoviruses

Last Answer : Answer : D

All of the following statements about RNA-dependent DNA polymerase are true except: (A) It synthesizes DNA using RNA as a template (B) It is also known as reverse transcriptase (C) It synthesizes DNA in 5’→3’ direction (D) It is present in all the viruses

Description : All of the following statements about RNA-dependent DNA polymerase are true except: (A) It synthesizes DNA using RNA as a template (B) It is also known as reverse transcriptase (C) It synthesizes DNA in 5’→3’ direction (D) It is present in all the viruses

Last Answer : Answer : D

The mitochondrial DNA is (A) Like the nuclear DNA in structure (B) Single stranded, linear (C) Double stranded, circular (D) Single stranded, circular

Description : The mitochondrial DNA is (A) Like the nuclear DNA in structure (B) Single stranded, linear (C) Double stranded, circular (D) Single stranded, circular

Last Answer : Answer : C

All of the following statements about nonsense codons are true except (A) They do not code for amino acids (B) They act as chain termination signals (C) They are identical in nuclear and mitochondrial DNA (D) They have no complementary anticodons

Description : All of the following statements about nonsense codons are true except (A) They do not code for amino acids (B) They act as chain termination signals (C) They are identical in nuclear and mitochondrial DNA (D) They have no complementary anticodons

Last Answer : Answer : C

Mitochondrial DNA is (A) Circular double stranded (B) Circular single stranded (C) Linear double helix (D) None of these

Description : Mitochondrial DNA is (A) Circular double stranded (B) Circular single stranded (C) Linear double helix (D) None of these

Last Answer : A

Which of the following is true? (1) DNA is the genetic material in most of the organism (2) RNA is the genetic material in most viruses and bacteria (3) DNA is the genetic material in all the viruses (4) RNA is the genetic material in all the viruses

Description : Which of the following is true? (1) DNA is the genetic material in most of the organism (2) RNA is the genetic material in most viruses and bacteria (3) DNA is the genetic material in all the viruses (4) RNA is the genetic material in all the viruses

Last Answer : (1) DNA is the genetic material in most of the organism Explanation: Deoxyribonucleic acid (DNA) molecules are informational molecules encoding the genetic instructions used in the development and functioning of all ... letters. G, A, T, and C. DNA is well-suited for biological information storage.

1. Bacteria protect themselves from viruses by fragmenting viral DNA with a. Ligase b. Endonuclease c. Exonuclease d. Gyrase

Description : 1. Bacteria protect themselves from viruses by fragmenting viral DNA with a. Ligase b. Endonuclease c. Exonuclease d. Gyrase

Last Answer : Ans: Endonuclease.

Which of the following is true ? (1) DNA is the genetic material in most of the organism (2) RNA is the genetic material in most viruses and bacteria (3) DNA is the genetic material in all the viruses (4) RNA is the genetic material in all the viruses

Description : Which of the following is true ? (1) DNA is the genetic material in most of the organism (2) RNA is the genetic material in most viruses and bacteria (3) DNA is the genetic material in all the viruses (4) RNA is the genetic material in all the viruses

Last Answer : DNA is the genetic material in most of the organism

Brown adipose tissue is characterized by which of the following? (A) Present in large quantities in adult humans (B) Mitochondrial content higher than white adipose tissue (C) Oxidation and phosphorylation are tightly coupled (D) Absent in hibernating animals

Description : Brown adipose tissue is characterized by which of the following? (A) Present in large quantities in adult humans (B) Mitochondrial content higher than white adipose tissue (C) Oxidation and phosphorylation are tightly coupled (D) Absent in hibernating animals

Last Answer : Answer : B

Carnitine acylcarnitine translocase is present (A) In the inner mitochondrial membrane (B) In the mitochondrial matrix (C) On the outer surface of inner mitochondrial membrane (D) On the inner surface of inner mitochondrial membrane

Description : Carnitine acylcarnitine translocase is present (A) In the inner mitochondrial membrane (B) In the mitochondrial matrix (C) On the outer surface of inner mitochondrial membrane (D) On the inner surface of inner mitochondrial membrane

Last Answer : Answer : A

Enzymes catalyzing electron transport are present mainly in the (A) Ribosomes (B) Endoplasmic reticulum (C) Lysosomes (D) Inner mitochondrial membrane

Description : Enzymes catalyzing electron transport are present mainly in the (A) Ribosomes (B) Endoplasmic reticulum (C) Lysosomes (D) Inner mitochondrial membrane

Last Answer : D

Select the mismatch. (a) Gas vacuoles – Green bacteria (b) Large central vacuoles – Animal cells (c) Protists – Eukaryotes (d) Methanogens – Prokaryotes

Description : Select the mismatch. (a) Gas vacuoles – Green bacteria (b) Large central vacuoles – Animal cells (c) Protists – Eukaryotes (d) Methanogens – Prokaryotes

Last Answer : (b) Large central vacuoles – Animal cells

In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements is true about archaea? (a) Archaea completely differ from both prokaryotes and eukaryotes. (b) Archaea completely differ from prokaryotes. (c) Archaea resemble eukarya in all respects. (d) Archaea have some novel features that are absent in other prokaryotes and eukaryotes.

Description : In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements is true about archaea? (a) Archaea ... respects. (d) Archaea have some novel features that are absent in other prokaryotes and eukaryotes.

Last Answer : (d) Archaea have some novel features that are absent in other prokaryotes and eukaryote

Which of the following is analogous to mesosomes of bacteria? A-Mitochondria of eukaryotes B- Golgi apparatus of eukaryotes C- Lysosomes of eukaryotes D- None of these

Description : Which of the following is analogous to mesosomes of bacteria? A-Mitochondria of eukaryotes B- Golgi apparatus of eukaryotes C- Lysosomes of eukaryotes D- None of these

Last Answer : Mitochondria of eukaryotes

Genetic and biochemical similarities between contemporary cyanobacteria and eukaryoticchloroplasts are accepted to mean that A- .eukaryotes evolved from bacteria B- eukaryotes evolved from archaea C- .oxygenic photosynthesis first evolved in eukaryotes D- .cyanobacteria arose from chloroplasts which escaped from plant cells

Description : Genetic and biochemical similarities between contemporary cyanobacteria and eukaryoticchloroplasts are accepted to mean that A- .eukaryotes evolved from bacteria B- eukaryotes evolved from archaea C- . ... evolved in eukaryotes D- .cyanobacteria arose from chloroplasts which escaped from plant cells

Last Answer : eukaryotes evolved from archaea

Lysozyme that is present in perspiration, saliva and tears, destroys (a) certain types of bacteria (b) all viruses (c) most virus-infected cells (d) certain fungi.

Description : Lysozyme that is present in perspiration, saliva and tears, destroys (a) certain types of bacteria (b) all viruses (c) most virus-infected cells (d) certain fungi.

Last Answer : (a) certain types of bacteria

A normal cell can be transformed into a cancer cell by all of the following except (A) Ionising radiation (B) Mutagenic chemicals (C) Oncogenic bacteria (D) Some viruses

Description : A normal cell can be transformed into a cancer cell by all of the following except (A) Ionising radiation (B) Mutagenic chemicals (C) Oncogenic bacteria (D) Some viruses

Last Answer : Answer : C

Passive immunity can be produced by administration of (A) Pure antigens (B) Immunoglobulins (C) Toxoids (D) Killed bacteria or viruses

Description : Passive immunity can be produced by administration of (A) Pure antigens (B) Immunoglobulins (C) Toxoids (D) Killed bacteria or viruses

Last Answer : Answer : B

Active immunity can be produced by administration of (A) Killed bacteria or viruses (B) Live attenuated bacteria or viruses (C) Toxoids (D) All of these

Description : Active immunity can be produced by administration of (A) Killed bacteria or viruses (B) Live attenuated bacteria or viruses (C) Toxoids (D) All of these

Last Answer : Answer : D

All of the following statements about restriction endonucleases are true except: (A) They are present in bacteria (B) They act on double stranded DNA (C) They recognize palindromic sequences (D) They always produce sticky ends

Description : All of the following statements about restriction endonucleases are true except: (A) They are present in bacteria (B) They act on double stranded DNA (C) They recognize palindromic sequences (D) They always produce sticky ends

Last Answer : Answer : D

What is evidence for the endosymbiotic theory? a. Ribosomes are the same size in eukaryotes and prokaryotes b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes c. Flagella are the same in both types of cells d. A-C are correct

Description : What is evidence for the endosymbiotic theory? a. Ribosomes are the same size in eukaryotes and prokaryotes b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes c. Flagella are the same in both types of cells d. A-C are correct

Last Answer : b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes

Template-directed DNA synthesis occurs in all the following except (A) The replication fork (B) Polymerase chain reaction (C) Growth of RNA tumor viruses (D) Expression of oncogenes

Description : Template-directed DNA synthesis occurs in all the following except (A) The replication fork (B) Polymerase chain reaction (C) Growth of RNA tumor viruses (D) Expression of oncogenes

Last Answer : Answer : C

Template-directed DNA synthesis occurs in all the following except (A) The replication fork (B) Polymerase chain reaction (C) Growth of RNA tumor viruses (D) Expression of oneogenes

Description : Template-directed DNA synthesis occurs in all the following except (A) The replication fork (B) Polymerase chain reaction (C) Growth of RNA tumor viruses (D) Expression of oneogenes

Last Answer : Answer : C

what is the primary source of mitochondrial DNA?

Description : (a) From what primary source is the DNA in your mitochondria, your mother or your father? (b) Speculate onpossible inheritance patterns if there were a defect in one or the other parent’s mitochondria.

Last Answer : (a) Mother. (b) If a defect exists in a mitochondrial gene, all progeny from that female will carry the defect. Several well-defined diseases resulting from such a defect have been described. 

The process of replication in plasmid DNA, other than initiation, is controlled by (a) mitochondrial gene (b) plasmid gene (c) bacterial gene (d) none of these.

Description : The process of replication in plasmid DNA, other than initiation, is controlled by (a) mitochondrial gene (b) plasmid gene (c) bacterial gene (d) none of these.

Last Answer : c) bacterial gene

Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of carbohydrates, fats and proteins. (c) Enzymes of electron transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Description : Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of ... transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Last Answer : (c) Enzymes of electron transport are embedded in outer membrane.

_______ was first used to catalog organisms into one of three domains. a. Photosynthesis b. Ribosomal RNA genes c. Nuclear DNA genes d. Mitochondrial DNA genes

Description : _______ was first used to catalog organisms into one of three domains. a. Photosynthesis b. Ribosomal RNA genes c. Nuclear DNA genes d. Mitochondrial DNA genes

Last Answer : b. Ribosomal RNA genes

Define about mitochondrial DNA. What is the forensic significance of mtDNA.

Description : Define about mitochondrial DNA. What is the forensic significance of mtDNA.

Last Answer : mtDNA (mitochondrial DNA): Human mitochondrial DNA (mtDNA) is a circular double-stranded molecule, 16,569 base pairs (bp) in length that codes for 13 subunits of the oxidative phosphorylation ... result can be obtained by typing mtDNA than by typing polymorphic markers found in nuclear DNA.

A mRNA of eukaryotes can code for (A) Only one polypeptide (B) Two polypeptides (C) Three polypeptides (D) Five polypeptides

Description : A mRNA of eukaryotes can code for (A) Only one polypeptide (B) Two polypeptides (C) Three polypeptides (D) Five polypeptides

Last Answer : Answer : A

All of the following statements about puromycin are true except (A) It is an alanyl tRNA analogue (B) It causes premature termination of protein synthesis (C) It inhibits protein synthesis in prokaryotes (D) It inhibits protein synthesis in eukaryotes

Description : All of the following statements about puromycin are true except (A) It is an alanyl tRNA analogue (B) It causes premature termination of protein synthesis (C) It inhibits protein synthesis in prokaryotes (D) It inhibits protein synthesis in eukaryotes

Last Answer : Answer : A

Puromycin causes premature chain termination in (A) Prokaryotes (B) Eukaryotes (C) Both (A) and (B) (D) None of these

Description : Puromycin causes premature chain termination in (A) Prokaryotes (B) Eukaryotes (C) Both (A) and (B) (D) None of these

Last Answer : Answer : C

In eukaryotes, the 40 S pre-initiation complex contains all the following initiation factors except (A) eIF-1A (B) eIF-2 (C) eIF-3 (D) eIF-4

Description : In eukaryotes, the 40 S pre-initiation complex contains all the following initiation factors except (A) eIF-1A (B) eIF-2 (C) eIF-3 (D) eIF-4

Last Answer : Answer : D

The first amino acyl tRNA which initiates translation in eukaryotes is (A) Mehtionyl tRNA (B) Formylmethionyl tRNA (C) Tyrosinyl tRNA (D) Alanyl tRNA

Description : The first amino acyl tRNA which initiates translation in eukaryotes is (A) Mehtionyl tRNA (B) Formylmethionyl tRNA (C) Tyrosinyl tRNA (D) Alanyl tRNA

Last Answer : Answer : A

A polycistronic mRNA can be seen in (A) Prokaryotes (B) Eukaryotes (C) Mitochondria (D) All of these

Description : A polycistronic mRNA can be seen in (A) Prokaryotes (B) Eukaryotes (C) Mitochondria (D) All of these

Last Answer : Answer : A

Are prokaryotes and eukaryotes similar in any respects?

Description : Are prokaryotes and eukaryotes similar in any respects?

Last Answer : Prokaryotes and eukaryotes share common features, among them the possession of nucleic acids and other organic substances such as proteins, carbohydrates, and lipids. In addition, they utilize similar ... although the mode of reproduction may be different and different organs of motility may exist.

The emtabolic pathway present in the inner mitochondrial membrane through which the electron passes from one carrier to another is called_____

Description : The emtabolic pathway present in the inner mitochondrial membrane through which the electron passes from one carrier to another is called_____

Last Answer : The emtabolic pathway present in the inner mitochondrial membrane through which the electron passes from one carrier to another is called_____

The emtabolic pathway present in the inner mitochondrial membrane through which the electron passes from one carrier to another is called_____

Description : The emtabolic pathway present in the inner mitochondrial membrane through which the electron passes from one carrier to another is called_____

Last Answer : The emtabolic pathway present in the inner mitochondrial membrane through which the electron passes from one carrier to another is called_____

Which of these statements is incorrect? (a) Enzymes of TCA cycle are present in mitochondrial matrix. (b) Glycolysis occurs in cytosol. (c) Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms. (d) Oxidative phosphorylation takes place in outer mitochondrial membrane

Description : Which of these statements is incorrect? (a) Enzymes of TCA cycle are present in mitochondrial matrix. (b) Glycolysis occurs in cytosol. (c) Glycolysis operates as long as it is supplied ... that can pick up hydrogen atoms. (d) Oxidative phosphorylation takes place in outer mitochondrial membrane

Last Answer : (d) Oxidative phosphorylation takes place in outer mitochondrial membrane

Which of these statements is incorrect ? (1) Enzymes of TCA cycle are present in mitochondrial matrix. (2) Glycolysis occurs in cytosol. (3) Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms. (4) Oxidative phosphorylation takes place in outer mitochondrial membrane.

Description : Which of these statements is incorrect ? (1) Enzymes of TCA cycle are present in mitochondrial matrix. (2) Glycolysis occurs in cytosol. (3) Glycolysis operates as long as it is supplied ... that can pick up hydrogen atoms. (4) Oxidative phosphorylation takes place in outer mitochondrial membrane.

Last Answer : (4) Oxidative phosphorylation takes place in outer mitochondrial membrane.