Chromosomal DNA contamination. -Biology

Description : The eukaryotic nuclear chromosomal DNA (A) Is a linear and unbranched molecule (B) Is not associated with a specific membranous organelle (C) Is not replicated semiconservatively (D) Is about of the same size as each prokaryotic chromoses

Last Answer : Answer : A

A DNA element which has the ability to move from one chromosomal position to another

Description : A DNA element which has the ability to move from one chromosomal position to another

Last Answer : Ans. Jumping gene

An analysis of chromosomal DNA using the Southern hybridization technique does not use (a) electrophoresis (b) blotting (c) autoradiography (d) PCR.

Description : An analysis of chromosomal DNA using the Southern hybridization technique does not use (a) electrophoresis (b) blotting (c) autoradiography (d) PCR.

Last Answer : (d) PCR.

n bacteria, plasmid is (a) extra chromosomal material (b) main DNA (c) non functional DNA (d) repetitive gene.

Description : n bacteria, plasmid is (a) extra chromosomal material (b) main DNA (c) non functional DNA (d) repetitive gene.

Last Answer : (a) extra chromosomal material

In bacteria, plasmid is (a) extra chromosomal material (b) main DNA (c) non functional DNA (d) repetitive gene.

Description : In bacteria, plasmid is (a) extra chromosomal material (b) main DNA (c) non functional DNA (d) repetitive gene.

Last Answer : (a) extra chromosomal material

Who had proposed the chromosomal theory of the inheritance? -Biology

Description : Who had proposed the chromosomal theory of the inheritance? -Biology

Last Answer : answer:

Given below is the presentation of a kind of chromosomal mutation : What is the kind of mutation represented

Description : Given below is the presentation of a kind of chromosomal mutation : What is the kind of mutation represented

Last Answer : Given below is the presentation of a kind of chromosomal mutation : What is the kind of ... B. duplication C. inversion D. reciprocal translocation

Chromosomal basis of sex determination was discovered in the plant :

Description : Chromosomal basis of sex determination was discovered in the plant :

Last Answer : Chromosomal basis of sex determination was discovered in the plant : A. Rumex B. Melandrium C. Concinia D. Spharocarpus

Chromosomal movement in Anaphase occurs with the help of :-

Description : Chromosomal movement in Anaphase occurs with the help of :-

Last Answer : Chromosomal movement in Anaphase occurs with the help of :- A. Astral rays B. Centrioles C. NOR D. Spindle fibres

Ras proto-oncogene is converted into oncogene by (A) A point mutation (B) Chromosomal translocation (C) Insertion of a viral promoter upstream of the gene (D) Gene amplification

Description : Ras proto-oncogene is converted into oncogene by (A) A point mutation (B) Chromosomal translocation (C) Insertion of a viral promoter upstream of the gene (D) Gene amplification

Last Answer : Answer : A

Chromosomal theory of heredity was proposed by

Description : Chromosomal theory of heredity was proposed by

Last Answer : Ans. W. Sutton (1902)

Who gave the chromosomal theory of Inheritance?

Description : Who gave the chromosomal theory of Inheritance?

Last Answer : Ans. Sutton and Boveri

A self replicating, extra-chromosomal genetic material found in plant cell

Description : A self replicating, extra-chromosomal genetic material found in plant cell

Last Answer : Ans. Plastids

Which chromosomal combination is responsible for maleness in man? (1) XO (2) XXX (3) XX (4) XY

Description : Which chromosomal combination is responsible for maleness in man? (1) XO (2) XXX (3) XX (4) XY

Last Answer : Explanation: In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.

Frozen tissue section of a lymph node biopsy from the neck of an old dog shows granulomatous inflammation with large areas of necrosis. Which one would be most important to do? C A. cell surface markers for lymphocyte identification B. chromosomal analysis by karyotyping

Description : Frozen tissue section of a lymph node biopsy from the neck of an old dog shows granulomatous inflammation with large areas of necrosis. Which one would be most important to do? C A. cell surface markers for lymphocyte identification B. chromosomal analysis by karyotyping

Last Answer : cultures for acid fast bacilli and fungi

Mental retardation in man, associated with sex chromosomal abnormality is usually due to (a) moderate increase in Y complement (b) large increase in Y complement (c) reduction in X complement (d) increase in X complement.

Description : Mental retardation in man, associated with sex chromosomal abnormality is usually due to (a) moderate increase in Y complement (b) large increase in Y complement (c) reduction in X complement (d) increase in X complement.

Last Answer : (d) increase in X complement.

.Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage? (a) Erythroblastosis fetalis - X-linked (b) Down’s syndrome - 44 autosomes + XO (c) Klinefelter’s syndrome - 44 autosomes + XXY (d) Colour blindness - Y-linked

Description : .Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage? (a) Erythroblastosis fetalis - X-linked (b) Down’s syndrome - 44 autosomes + XO (c) Klinefelter’s syndrome - 44 autosomes + XXY (d) Colour blindness - Y-linked

Last Answer : (c) Klinefelter’s syndrome - 44 autosomes + XXY

Which of the following most appropriately describes haemophilia? (a) Chromosomal disorder (b) Dominant gene disorder (c) Recessive gene disorder (d) X-linked recessive gene disorder

Description : Which of the following most appropriately describes haemophilia? (a) Chromosomal disorder (b) Dominant gene disorder (c) Recessive gene disorder (d) X-linked recessive gene disorder

Last Answer : (d) X-linked recessive gene disorder

Inheritance of skin colour in humans is an example of (a) point mutation (b) polygenic inheritance (c) codominance (d) chromosomal aberration.

Description : Inheritance of skin colour in humans is an example of (a) point mutation (b) polygenic inheritance (c) codominance (d) chromosomal aberration.

Last Answer : (b) polygenic inheritance

Experimental verification of the chromosomal theory of inheritance was done by (a) Mendel (b) Sutton (c) Boveri (d) Morgan.

Description : Experimental verification of the chromosomal theory of inheritance was done by (a) Mendel (b) Sutton (c) Boveri (d) Morgan.

Last Answer : Morgan

Which one of the following does not differ in E.coli and Chlamydomonas? (a) Ribosomes (b) Chromosomal organization (c) Cell wall (d) Cell membrane

Description : Which one of the following does not differ in E.coli and Chlamydomonas? (a) Ribosomes (b) Chromosomal organization (c) Cell wall (d) Cell membrane

Last Answer : (d) Cell membrane

Genomic islands are a. Gene Sequences Not Part Of The Chromosomal Genes. b. Adjacent Gene Sequences Unique To One Or A Few Strains In A Species. c. Acquired By HGT. d. Both B And C Are Correct.

Description : Genomic islands are a. Gene Sequences Not Part Of The Chromosomal Genes. b. Adjacent Gene Sequences Unique To One Or A Few Strains In A Species. c. Acquired By HGT. d. Both B And C Are Correct.

Last Answer : d. Both B And C Are Correct.

The following statement is not true of sulbactam: A. It is a broad spectrum β-lactamase inhibitor B. It does not augment the activity of ampicillin against bacteria that are sensitive to the latter C. It induces chromosomal β-lactamases D. Combined with ampicillin, it is highly effective against penicillinase producing N. gonorrhoeae

Description : The following statement is not true of sulbactam: A. It is a broad spectrum β-lactamase inhibitor B. It does not augment the activity of ampicillin against bacteria that are sensitive ... β-lactamases D. Combined with ampicillin, it is highly effective against penicillinase producing N. gonorrhoeae

Last Answer : C. It induces chromosomal β-lactamases

The most common mechanism of development of resistance to fluoroquinolones is: A. Chromosomal mutation altering affinity of target site B. Plasmid transfer C. Acquisition of drug destroying enzyme D. Acquisition of alternative metabolic pathway

Description : The most common mechanism of development of resistance to fluoroquinolones is: A. Chromosomal mutation altering affinity of target site B. Plasmid transfer C. Acquisition of drug destroying enzyme D. Acquisition of alternative metabolic pathway

Last Answer : A. Chromosomal mutation altering affinity of target site

Which of the following are capable of causing chromosomal mutations? a) hydrogen peroxide b) high body temperature c) X-rays d) all of the above

Description : Which of the following are capable of causing chromosomal mutations? a) hydrogen peroxide b) high body temperature c) X-rays d) all of the above

Last Answer : ANSWER: D -- ALL OF THE ABOVE

Which chromosomal combination is responsible for maleness in man ? (1) XO (2) XXX (3) XX (4) XY

Description : Which chromosomal combination is responsible for maleness in man ? (1) XO (2) XXX (3) XX (4) XY

Last Answer : XY

Why aren't items like Romaine lettuce labelled to make it easy to find out the seller immediatlely in case of contamination?

Description : Why aren't items like Romaine lettuce labelled to make it easy to find out the seller immediatlely in case of contamination?

Last Answer : It's really hard to barcode a leaf of lettuce. As was answered 3-4 days ago, distributors buy their romaine from tens or even hundreds of growers in a particular region. The distributor aggregates it, ... put in the position of knowing which head of lettuce it used three weeks ago? I doubt it.

Potential meat contamination question. See inside for details?

Description : Potential meat contamination question. See inside for details?

Last Answer : answer:No, the deer wouldn't reject the grass unless it tastes bad for some reason. The toxic effects are insidious and already established in the ground water and soil. 100 years? Whoa sounds like a really ... source comes from a toxic site. Keep an eye out for 5 legged fawns with 2 heads. 0-O

What is the United States government doing to protect their citizens from the Fukushima Pacific Ocean contamination?

Description : What is the United States government doing to protect their citizens from the Fukushima Pacific Ocean contamination?

Last Answer : I don’t know, but I, for one, am very concerned.

How long does runoff toxicity/contamination in plants last?

Description : How long does runoff toxicity/contamination in plants last?

Last Answer : Lead from gasoline/petrol last for a long – long time.

which one of the following situations would most likely promote bacterial contamination -General Knowledge

Description : which one of the following situations would most likely promote bacterial contamination -General Knowledge

Last Answer : Touching raw chicken and cooked chicken with the same gloves would most likely promote bacterial contamination.

What is arsenic contamination ?

Last Answer : Arsenic contamination occurs due to natural causes. The soil contains arsenic minerals. When this mineral comes in contact with the ground water level, it mixes with the water and contaminates the water. Thus arsenic ... the onset of rain. The tank needs to be thoroughly cleaned 2 to 3 times a year.

What factors prevent food contamination by food handlers?

Description : What factors prevent food contamination by food handlers?

Last Answer : Feel Free to Answer

How On thin gauge metals sensitive to atmosphere contamination a backing bar is used to protect the root side of the weld?

Description : How On thin gauge metals sensitive to atmosphere contamination a backing bar is used to protect the root side of the weld?

Last Answer : What is the answer ?

Why does some of my vitamins in my bottle have a black dot in it Could it be mold Contamination?

Description : Why does some of my vitamins in my bottle have a black dot in it Could it be mold Contamination?

Last Answer : Its a pretty well known or well advertised vitamin so im hoping its not but still worried. The fact that its not consistent with the other pills in appearance is concerning.

The metal disks, which are permanently housed in, sealed and contamination free containers are called A) Hard disks B) Floppy disk C) Winchester disk D) Flexible disk

Description : The metal disks, which are permanently housed in, sealed and contamination free containers are called A) Hard disks B) Floppy disk C) Winchester disk D) Flexible disk

Last Answer : Answer : C

The fruit when kept is open, tastes bitter after 2 hours because of (A) Loss of water from juice (B) Decreased concentration of fructose in juice (C) Fermentation by yeast (D) Contamination by bacterial enzymes

Description : The fruit when kept is open, tastes bitter after 2 hours because of (A) Loss of water from juice (B) Decreased concentration of fructose in juice (C) Fermentation by yeast (D) Contamination by bacterial enzymes

Last Answer : Answer : D

Wounds are classified according to the likelihood of bacterial contamination. Which of the following statement(s) is/are true concerning wound classifications? a. A clean-contaminated wound would be that associated with an elective colon resection with adequate mechanical and antibiotic bowel preparation b. A contaminated wound would include a resection of obstructed bowel with gross spillage of intestinal contents c. In a clean wound, no viscus is entered d. Antibiotic prophylaxis should be administered for all clean-contaminated and contaminated wounds and selectively in patients involving a clean wound

Description : Wounds are classified according to the likelihood of bacterial contamination. Which of the following statement(s) is/are true concerning wound classifications? a. A clean-contaminated wound would ... all clean-contaminated and contaminated wounds and selectively in patients involving a clean wound

Last Answer : Answer: a, b, c, d Wounds are classified under three classes according to the likelihood of bacterial contamination: 1) clean (no viscus is entered; e.g., herniorrhaphy); 2) clean- ... tenet involves cases in which a prosthetic material may be used (artificial joint, heart valve, tissue patch)

A patient with gross fecal contamination and peritonitis from a ruptured sigmoid diverticulum has his midline wound left open to heal by secondary intention. Which of the following statement(s) describes this healing process? a. Wounds healing in this fashion have an altered sequence of healing compared to a primarily closed wound b. A bed of granulation tissue forms over exposed subcutaneous tissue c. Epithelialization is enhanced in the face of bacterial colonization d. The ability of a wound to form granulation tissue is dependent on the blood supply of the tissue

Description : A patient with gross fecal contamination and peritonitis from a ruptured sigmoid diverticulum has his midline wound left open to heal by secondary intention. Which of the following statement(s) describes this ... of a wound to form granulation tissue is dependent on the blood supply of the tissue

Last Answer : Answer: b, d Open wounds, whether they be ulcers or open surgical incisions closing by secondary intention, heal with the same sequence of inflammation, matrix deposition, epithelialization ... via bacterial and phagocytic cell products such as proteases, collagenases, elastases, and other enzymes

Bacterial decomposition of biological material under anaerobic condition is – (1) fermentation (2) fertilization (3) contamination (4) composting

Description : Bacterial decomposition of biological material under anaerobic condition is – (1) fermentation (2) fertilization (3) contamination (4) composting

Last Answer : (1) fermentation Explanation: Fermentation is the process by which complex organic compounds, such as glucose, are broken down by the action of enzymes into simpler com-pounds in the absence ... carbon dioxide by fermentation. Fermentation is used to produce wine, beer, yogurt and other products.

Mercury filled thermometers should never be used to determine the temperature of the battery electrolyte because accidental breakage of the thermometer can cause __________________. A. severe sparking and explosions B. rapid oxidation of battery plates C. contamination of the electrolyte D. corrosion on the battery terminals

Description : Mercury filled thermometers should never be used to determine the temperature of the battery electrolyte because accidental breakage of the thermometer can cause __________________. A. severe sparking and ... of battery plates C. contamination of the electrolyte D. corrosion on the battery terminals

Last Answer : Answer: A

Which of the damages listed can occur to the components of a winch master control switch, if the cover gasket becomes deteriorated? A. Overheating of the winch motor. B. Contamination of lube oil. C. Sparking at the winch motor brushes. D. Rapid corrosion of switch components.

Description : Which of the damages listed can occur to the components of a winch master control switch, if the cover gasket becomes deteriorated? A. Overheating of the winch motor. B. Contamination of lube oil. C. Sparking at the winch motor brushes. D. Rapid corrosion of switch components.

Last Answer : Answer: D

Refrigerator Protects the food from contamination because

Description : Refrigerator Protects the food from contamination because

Last Answer : At its Low temperature Bacteria and Fungus becomes non-reactive

Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of (A) Bronze (B) Stainless steel (C) Flint or porcelain (D) Concrete

Description : Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of (A) Bronze (B) Stainless steel (C) Flint or porcelain (D) Concrete

Last Answer : (C) Flint or porcelain

Indirect contact heat exchangers are preferred over direct contact heat exchangers, because (A) Heat transfer co-efficient are high (B) There is no risk of contamination (C) There is no mist formation (D) Cost of equipment is lower

Description : Indirect contact heat exchangers are preferred over direct contact heat exchangers, because (A) Heat transfer co-efficient are high (B) There is no risk of contamination (C) There is no mist formation (D) Cost of equipment is lower

Last Answer : (B) There is no risk of contamination

Chromosomal DNA contamination. -Biology

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