Where does the replication of mutated genes occur in human cells?

Where does the replication of mutated genes occur in human cells?
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In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells. (a) there is breakdown of these regulatory mechanism leading to formation of benign and malignant tumors (b) controlled cell division and over production of genetic material occur (c) RNA is mutated and produced in less amount (d) DNA is mutated and produced in less amount

Description : In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells. (a) there is breakdown of these regulatory mechanism leading to formation of benign and malignant ... is mutated and produced in less amount (d) DNA is mutated and produced in less amount

Last Answer : Ans:(a)

Assertion : GM foods are facing widerspread resistance by the people Reason : GM foods hve mutated genes which cause infections and alleriges

Description : Assertion : GM foods are facing widerspread resistance by the people Reason : GM foods hve mutated genes which cause infections and alleriges

Last Answer : Assertion : GM foods are facing widerspread resistance by the people Reason : GM foods hve mutated ... . If both the assertion and reason are false

If a woman developed skin cancer as result of a mutated gene in the skin cells of her arms could she pass skin cancer gene to her children justify your answer?

Description : If a woman developed skin cancer as result of a mutated gene in the skin cells of her arms could she pass skin cancer gene to her children justify your answer?

Last Answer : Need answer

.E.coli cells with a mutated z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because (a) the lac operon is constitutively active in these cells (b) they cannot synthesise functional beta galactosidase (c) in the presence of glucose, E.coli cells do not utilise lactose (d) they cannot transport lactose from the medium into the cell.

Description : .E.coli cells with a mutated z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because (a) the lac operon is constitutively active in these cells ( ... coli cells do not utilise lactose (d) they cannot transport lactose from the medium into the cell.

Last Answer : (b) they cannot synthesise functional beta galactosidase

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

In many types of cancer, proteins that are crucial regulators of the cell cycle are often mutated and cannot function correctly. This leads to the evasion of apoptosis and to the loss of control of cell proliferation? For example, many cancer cells carry two mutant copies of the gene that codes for a tumor suppressor protein named p53. What is the normal function of p53 that is lost when it is mutated?

Description : In many types of cancer, proteins that are crucial regulators of the cell cycle are often mutated and cannot function correctly. This leads to the evasion of apoptosis and to the loss of control of cell ... protein named p53. What is the normal function of p53 that is lost when it is mutated?

Last Answer : Normally, p53 senses DNA damage and acts as a transcription factor for checkpoint control genes.

The development of global regulatory systems in prokaryotes A- determines the exact location of the cell on the globe B- aids in DNA replication C- .determines the exact location of the replication site D- regulates many genes under varying environmental conditions

Description : The development of global regulatory systems in prokaryotes A- determines the exact location of the cell on the globe B- aids in DNA replication C- .determines the exact location of the replication site D- regulates many genes under varying environmental conditions

Last Answer : regulates many genes under varying environmental conditions

If it turned out there were a real-life Godzilla - 70 foot lizard like mutated monster - would the US or other countries of the world have a strategy for dealing with it?

Description : If it turned out there were a real-life Godzilla - 70 foot lizard like mutated monster - would the US or other countries of the world have a strategy for dealing with it?

Last Answer : Since it is no longer politically correct to allow anyone to live & let live, I’d think we’d have troops at the border to direct it to the nearest concentration camp!!!

[Science and the world of tomorrow] Mutated African siafu (army ants) on the loose in a metropolitan area, what ruckus would they create?

Description : [Science and the world of tomorrow] Mutated African siafu (army ants) on the loose in a metropolitan area, what ruckus would they create?

Last Answer : We’d just have to deal with them. Fire ants have replaced most ant species where I live. It’s sad because I like those little sugar ants. But they didn’t stand a chance. I don’t hate very many animals, but fire ants suck.

If certain plants mutated, which mutations would cause more impact for society?

Description : If certain plants mutated, which mutations would cause more impact for society?

Last Answer : answer:When I first read the main question I had all sorts of positive scenarios in mind like Honey Crisp apples being able to grow in Florida and Vidalias having a longer growing season. With ... to control crops more, maybe have more hydroponic farms where bad crops can't contaminate good ones.

What happens if the apc gene is mutated?

Description : What happens if the apc gene is mutated?

Last Answer : Need answer

A mutant strain of T4 - Bacteriophage, R-II, fails to lyse the E. coli but when two strains R-IIX and R-IIY are mixed then they lyse the E. coli. What may be the possible reason? (a) Bacteriophage transforms in wild. (b) It is not mutated. (c) Both strains have similar cistrons. (d) Both strains have different cistrons.

Description : A mutant strain of T4 - Bacteriophage, R-II, fails to lyse the E. coli but when two strains R-IIX and R-IIY are mixed then they lyse the E. coli. What may be the possible reason? (a) ... . (b) It is not mutated. (c) Both strains have similar cistrons. (d) Both strains have different cistrons.

Last Answer : (d) Both strains have different cistrons.

What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA? (a) A polypeptide of 24 amino acids will be formed. (b) Two polypeptides of 24 and 25 amino acids will be formed. (c) A polypeptide of 49 amino acids will be formed. (d) A polypeptide of 25 amino acids will be formed.

Description : What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA? (a) A polypeptide of 24 amino acids will be formed. (b) Two polypeptides of 24 and ... ) A polypeptide of 49 amino acids will be formed. (d) A polypeptide of 25 amino acids will be formed.

Last Answer : (b) Two polypeptides of 24 and 25 amino acids will be formed.

.What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA? (a) A polypeptide of 24 amino acids will be formed. (b) Two polypeptides of 24 and 25 amino acids will be formed. (c) A polypeptide of 49 amino acids will be formed. (d) A polypeptide of 25 amino acids will be formed.

Description : .What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA? (a) A polypeptide of 24 amino acids will be formed. (b) Two polypeptides of 24 and ... ) A polypeptide of 49 amino acids will be formed. (d) A polypeptide of 25 amino acids will be formed.

Last Answer : (a) A polypeptide of 24 amino acids will be formed.

.A normal green male maize is crossed with albino female. The progeny is albino because (a) trait for a albinism is dominant (b) the albinos have biochemical to destroy plastids derived from green male (c) plastids are inherited from female parent (d) green plastids of male must have mutated.

Description : .A normal green male maize is crossed with albino female. The progeny is albino because (a) trait for a albinism is dominant (b) the albinos have biochemical to destroy plastids derived from green male (c) plastids are inherited from female parent (d) green plastids of male must have mutated.

Last Answer : (c) plastids are inherited from female paren

YELLOW JOURNALISM a) Does not spoil the societyb) Mutated division of Journalism that goes against the key principles of reporting c) Exploits, distorts, or exaggerates the news to create sensations and attract readers d) Both B and C

Description : YELLOW JOURNALISM a) Does not spoil the societyb) Mutated division of Journalism that goes against the key principles of reporting c) Exploits, distorts, or exaggerates the news to create sensations and attract readers d) Both B and C

Last Answer : d) Both B and C

A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them? (a) Mutated (b) Embolised (c) Etiolated (d) Defoliated

Description : A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them? (a) Mutated (b) Embolised (c) Etiolated (d) Defoliated

Last Answer : (c) Etiolated

When does replication of chromosomal DNA occur? -Biology

Description : When does replication of chromosomal DNA occur? -Biology

Last Answer : answer:

Assertion (A) `:` Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. Reason (R ) `:` m-RNA is transferred fro

Description : Assertion (A) `:` Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. Reason (R ) `:` m-RNA is transferred fro

Last Answer : Assertion (A) `:` Replication and transcription occur in the nucleus but translation occurs in the ... D. If both assertion and reason are false.

DNA replication occur in which stage of cell division? (a) G1 phase (b) G2 phase (c) S phase (d) M phase

Description : DNA replication occur in which stage of cell division? (a) G1 phase (b) G2 phase (c) S phase (d) M phase

Last Answer : (c) S phase

Proto-oncogenes are: B A. DNA sequences in cells that are oncogenes themselves B. Cellular copies of genes that were first found in oncogenic retroviruses C. DNA viral sequences that are known to infect human cells D. Bacterial DNA counterparts

Description : Proto-oncogenes are: B A. DNA sequences in cells that are oncogenes themselves B. Cellular copies of genes that were first found in oncogenic retroviruses C. DNA viral sequences that are known to infect human cells D. Bacterial DNA counterparts

Last Answer : Cellular copies of genes that were first found in oncogenic retroviruses

why crossing over cannot occur of linked genes -Biology

Description : why crossing over cannot occur of linked genes -Biology

Last Answer : answer:

why crossing over cannot occur of linked genes -Biology

Description : why crossing over cannot occur of linked genes -Biology

Last Answer : answer:

Suppressor mutations occur in (A) Structural genes (B) Promoter regions (C) Silencer elements (D) Anticodons of tRNA

Description : Suppressor mutations occur in (A) Structural genes (B) Promoter regions (C) Silencer elements (D) Anticodons of tRNA

Last Answer : Answer : D

The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Description : The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Last Answer : (b) genes for characters are located on the sex- chromosomes

The oncogene theory states that transforming genes a. Normally Occur In The Host Genome. b. Can Exist In Viruses. c. Are Not Of Viral Origin. d. All Of The Above (A—C) Are Correct.

Description : The oncogene theory states that transforming genes a. Normally Occur In The Host Genome. b. Can Exist In Viruses. c. Are Not Of Viral Origin. d. All Of The Above (A—C) Are Correct.

Last Answer : d. All Of The Above (A—C) Are Correct

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.

Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid cells are formed at the end of meiosis-I ( C

Description : Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid cells are formed at the end of meiosis-I ( C

Last Answer : Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid ... and C C. Only B D. All are correct

Plasmid has been used as vector because (a) it is circular DNA which have capacity to join to eukaryotic DNA (b) it can move between prokaryotic and eukaryotic cells (c) both ends show replication (d) it has antibiotic resistance gene.

Description : Plasmid has been used as vector because (a) it is circular DNA which have capacity to join to eukaryotic DNA (b) it can move between prokaryotic and eukaryotic cells (c) both ends show replication (d) it has antibiotic resistance gene.

Last Answer : (a) it is circular DNA which have capacity to join to eukaryotic DNA

Virus reproduces in living cells by A.replication B.duplication C.multiplication D.all of these

Description : Virus reproduces in living cells by A.replication B.duplication C.multiplication D.all of these

Last Answer : A.replication

The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication

Description : The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication

Last Answer : adsorption

The Ames test is an effective procedure for a. Identifying disease-causing bacterial species. b. Detecting potential human carcinogens. c. Determining if DNA replication has occurred. d. Detecting antibiotic resistance.

Description : The Ames test is an effective procedure for a. Identifying disease-causing bacterial species. b. Detecting potential human carcinogens. c. Determining if DNA replication has occurred. d. Detecting antibiotic resistance.

Last Answer : b. Detecting potential human carcinogens.

Assertion (A) : Cancer cells are virtually immortal until the body in which they reside dies. Reason`(R)`: Cancer is caused by damage to genes regulat

Description : Assertion (A) : Cancer cells are virtually immortal until the body in which they reside dies. Reason`(R)`: Cancer is caused by damage to genes regulat

Last Answer : Assertion (A) : Cancer cells are virtually immortal until the body in which they reside dies. Reason ... D. If both the assertion and reason are false

Gene gun can introduced genes into cells with the help of

Description : Gene gun can introduced genes into cells with the help of

Last Answer : Gene gun can introduced genes into cells with the help of A. Plasmids B. Cosmide C. Microscopic pellets D. Moringa

What genes are located in these bundles that are found in the nucleus of most cells are?

Description : What genes are located in these bundles that are found in the nucleus of most cells are?

Last Answer : Chromosomes

What is the threadlike structures in the nucleus of cells that contain genes?

Description : What is the threadlike structures in the nucleus of cells that contain genes?

Last Answer : Feel Free to Answer

If one or more of these mutations occurs in the genes of reproductive cells how might the traits of offspring be affected?

Description : If one or more of these mutations occurs in the genes of reproductive cells how might the traits of offspring be affected?

Last Answer : Need answer

All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes

Description : All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes

Last Answer : Answer : A

Antioxidants help a person maintain good health because they (a) prevent the vitamins deficiency. (b) prevent excessive oxidation of glucose and other carbohydrates. (c) neutralise the free radicals formed in the body during metabolism. (d) activate certain genes in the body cells which help delay the ageing process.

Description : Antioxidants help a person maintain good health because they (a) prevent the vitamins deficiency. (b) prevent excessive oxidation of glucose and other carbohydrates. (c) neutralise the free radicals ... metabolism. (d) activate certain genes in the body cells which help delay the ageing process.

Last Answer : Ans:(c)

Consider the following methods by which gene therapy can be performed: 1. By introducing a new gene into the body 2. By the use of stem cells 3. By delivery of genes using gold nanoparticles The correct methods could be: (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3 only

Description : Consider the following methods by which gene therapy can be performed: 1. By introducing a new gene into the body 2. By the use of stem cells 3. By delivery of genes using gold nanoparticles The correct methods could be: (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3 only

Last Answer : Ans:(a)

Genes are not found in pairs - (1) in body cells (2) in ovary after fertilization (3) in gametes (4) in zygotes

Description : Genes are not found in pairs - (1) in body cells (2) in ovary after fertilization (3) in gametes (4) in zygotes

Last Answer : (3) in gametes Explanation: Genes are a part of the chromosome and are found in pairs in somatic cells. One member of the gene pair segregates into a gamete, thus each gamete only carries one member of the gene pair. Gametes unite at random and irrespective of the other gene pairs involved.

Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein (a) binds with epithelial cells of midgut of the insect pest ultimately killing it (b) is coded by several genes including the gene cry (c) is activated by acid pH of the foregut of the insect pest (d) does not kill the carrier bacterium which is itself resistant to this toxin.

Description : Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein (a) binds with epithelial cells of midgut of the insect pest ultimately killing it (b) is coded by several ... pest (d) does not kill the carrier bacterium which is itself resistant to this toxin.

Last Answer : (a) binds with epithelial cells of midgut of the insect pest ultimately killing it

With regard to HLA class 1 antigen: a. they are expressed on all nucleated cells b. they are essential for viral antigen recognition by cytotoxic cells c. the genes for HLA class 1 molecules are located on chromosome 6 and 15 d. all above

Description : With regard to HLA class 1 antigen: a. they are expressed on all nucleated cells b. they are essential for viral antigen recognition by cytotoxic cells c. the genes for HLA class 1 molecules are located on chromosome 6 and 15 d. all above

Last Answer : all above

The following are true : a. the HLA proteins are found within the cytoplasm of the cells b. HLA class I antigens are expressed on all cells with nuclei c. HLA class II antigens presents the virus infected cells to cytotoxic T lymphocytes d. HLA genes are found on chromosome 6 e. HLA tissue typing is carried out in all forms of transplantation to prevent rejection

Description : The following are true : a. the HLA proteins are found within the cytoplasm of the cells b. HLA class I antigens are expressed on all cells with nuclei c. HLA class II antigens presents ... on chromosome 6 e. HLA tissue typing is carried out in all forms of transplantation to prevent rejection

Last Answer : HLA class I antigens are expressed on all cells with nuclei

Transposons are of particular significance because they a. often contain genes for antibiotic resistance. b. inhibit the effects of overlapping genes. c. come in pairs and often are associated with viruses. d. regulate gene transcription in bacterial cells.

Description : Transposons are of particular significance because they a. often contain genes for antibiotic resistance. b. inhibit the effects of overlapping genes. c. come in pairs and often are associated with viruses. d. regulate gene transcription in bacterial cells.

Last Answer : a. often contain genes for antibiotic resistance.

Which of the following laws best describes the statement: The members of an homologous (pron: ho-MOL-eh-gus) pair of genes are separated during meiosis (pron: my-O-sis) of reproductive cells so that each gamete (pron: GAM-eet) contains one of the alleles (pron: a-leels). Is it: a) law of segregation b) law of independent assortment c) law of filial (pron: FILL-ee-al) generation d) law of sorting

Description : Which of the following laws best describes the statement: The members of an homologous (pron: ho-MOL-eh-gus) pair of genes are separated during meiosis (pron: my-O-sis) of reproductive cells so that ... law of independent assortment c) law of filial (pron: FILL-ee-al) generation d) law of sorting

Last Answer : ANSWER: A -- LAW OF SEGREGATION

What term beginning with the letter O is used to describe cancer-causing genes originally derived from animal or plant cells?

Description : What term beginning with the letter O is used to describe cancer-causing genes originally derived from animal or plant cells? 

Last Answer : ANSWER: ONCOGENES

Genes are able to control a cell's fate by determining the synthesis of: a) other genes b) enzymes c) carbohydrates d) fat

Description : Genes are able to control a cell's fate by determining the synthesis of: a) other genes b) enzymes c) carbohydrates d) fat

Last Answer : ANSWER: B -- ENZYMES 

Genes are not found in pairs (1) in body cells (2) in ovary after fertilization (3) in gametes (4) in zygotes

Description : Genes are not found in pairs (1) in body cells (2) in ovary after fertilization (3) in gametes (4) in zygotes

Last Answer : in gametes

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur ? (1) Chromosomes will be fragmented (2) Chromosomes will not segregate (3) Recombination of chromosome arms will occur (4) Chromosomes will not condense

Description : Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur ... will not segregate (3) Recombination of chromosome arms will occur (4) Chromosomes will not condense

Last Answer : (2) Chromosomes will not segregate