Why do stem cells that have been damaged prefer apoptosis over repairing the genome?   a. Stem cells cannot repair the damaged genome b. The repair machinery is not perfect and therefore prone to make mistakes c. They don't d. None of the above

Q: Often mutations in cyclin dependent kinases, CDKs, can cause cancer. This is because a. CDKs…

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Q: The drug pump activity of Cancer stem cells can be explained by the overexpression of: a. Mdr1 b.…

A: Cancer is the state of uncontrolled cell division.

Q: a way in which proto-oncogenes can change to become genes that induce cancer?

A: A proto-oncogene is a normal gene that can turn into an oncogene due to mutations or increased…

Q: Which of the following is MOST likely true of aggressively dividing cancer cells (select one)?   A.…

A: Cancer cells: Because they no more react to many of the signals which regulate cellular development…

Q: Bishop and Varmus’s experiment was a landmark work in cancer biology. What was the question facing…

A: Normal cells become abnormal when they divide uncontrollably and have the potential to invade nearby…

Q: Which of the following best describes a gene that codes for a tumor-suppressor protein? a. One that…

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Q: Which of the following types of epigenetic changes may promote cancer?a. DNA methylationb. Covalent…

A: Epigenetics represents one of the merging fields of biology concerned with the study of heritable…

Q: Which of the following gene expression regulatory mechanisms saves the most energy but takes the…

A: Gene expression can be described as a process by which the genetic information stored in the gene is…

Q: A gene is constitutively expressed when it is: a. always copied into RNA, and the RNA is always…

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Q: Changes in a cell that affect micro RNAs lead to cancer because miRNAs... a. help a cell to…

A: Cancer can occur when- apoptosis( programmed cell death) is distributed, inhibition of growth…

Q: Epigenetics works by Select one: a. activating DNA ligases so they can clip attached methyl groups…

A: Epigenetics is a field of study within genetics that focuses on heritable changes in gene expression…

Q: If a is inactive, a cell may become cancerous. Ca. proto-oncogene b. tumor suppressor gene Cc.…

A: Cancer is the group of diseases. It involves the uncontrolled division of normal cells in the body.…

Q: Which of the following is the best description of a transcription factor? A. A protein that brings…

A: Transcription is the process which leads to conversion of DNA to RNA. One distinguishing aspect of…

Q: Why is regulating transcription the main way that cells control gene expression?     A. Because…

A: Transcription is the process in which RNA is synthesized with the help of RNA polymerase enzyme. RNA…

Q: The role of p53 in normal cells is toa. create cancer-blocking mutations.b. trigger unrestrained…

A: Answer- P53 is the tumor supressing gene that is prensent in every cell. Any mutation in this leads…

Q: A scientist notices that a cancer cell line fails to die when he adds an inducer of apoptosis to his…

A: Apoptosis is the programmed cell death. It occurs as a cell response to various signalling pathways,…

Q: graduate student wants to isolate cells from a patient and grow them perpetually in culture to study…

A: The correct answers are as follows- A. Telomerase C. MDM2  A graduate student wants to isolate cells…

Q: Post-translational modifications of proteins can affect which of the following? a. protein function…

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Q: What strategy does a genetically encoded calcium indicator look like to allow fluorescence imaging…

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Q: You are investigating the transport of proteins into the ER in various mutant cells. Where would you…

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Q: A. Somatic cells are aslo called B. In irder to clone a gene,

A: A Somatic cells are also called Body cells .  Any other cells other than gametes are called somatic…

Q: Are mutations harmful?a. Yes, because the DNA is damaged.b. No, because changes in the DNA result in…

A: Mutations in biology is defined as a change in DNA sequence from normal sequence. Mutations can be…

Q: Positive regulators are called: A. Repressors  B. Activators C. Enhancers D. None of the above

A: Transcription is a process by which the RNA is synthesized from the DNA sequence. RNA polymerase is…

Q: What are the characteristics of stem cells? (Select ALL that apply)

A: Stem cells are of two types. The embryonic stem cells which are derived from embryos. The other…

Q: Which of the following may produce more than one functional protein from an mRNA transcript?a.…

A: Chromosome condensation is the re-organization of the long thin chromatin strands into compact…

Q: What might happen, for instance, if in a research study cancer cell genes were transferred into…

A: Gene therapy is a way of treating or preventing disease by altering the genetic instructions within…

Q: Which of the following can lead to cancer?a. smokingb. pollutionc. mutations of Rb and p53d. All of…

A: Cancer is a disease that is characterized by rapid and indefinite growth of cells, resulting in the…

Q: How can Cas9 technology be used in gene therapy. A. Base editing can be used to repair DNA error…

A:

Q: Which of the following is the action of SnRNA (snurps)? a. Knocks out a portion of the gene b.…

A: Splicesomes are large protein-RNA complexes in eukaryotes which undertakes the process of splicing.…

Q: How does reverse methylation affect gene expression? Select one: o a. The gene is turned off, but…

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: The epigenome for a particular gene determines whether it will

A: When certain chemical compounds or proteins are attached externally to the genome or the DNA, such…

Q: Match the gene on the left with the gene category on the right.…

A: Genes  Genes are the information coded in a DNA. They make our protein and enzyme. They are…

Q: Exosomes were once thought to be a way a cell discards its waste.  Now we know that their normal…

A: The correct option is a cell to cell signaling; aiding metastasis. Exosomes are bilayer membrane…

Q: Hypermethylation is thought to contribute to cancer by a. inhibiting DNA replication. b. inhibiting…

A: DNA methylation is one of the intensely studied epigenetic modifications in mammals. The regulation…

Q: A mutation in the p53 gene creates a misfolded protein that is overactive.  This scenario would most…

A: Tumor suppressor gene P53 activity stops formation of tumors. This gene makes protein that is…

Q: Xeroderma pigmentosa (XP): A. is caused by a defect in the mismatch repair system. B. typically…

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Q: Two cells use the same segment of DNA to produce two different proteins. The mRNA transcribed by…

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Q: A transcription factor (protein - orange/green) is bound to a promoter of a gene (DNA - blue) it…

A: The control of gene expression is a complex process that involves the interaction of numerous…

Q: RASL11A gene is a tumor suppressor gene associated with spontaneous tumor shrinkage in Tasmanian…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: How does p53 operate in normal cells?

A: The p53 gene is coded by TP 53 gene. It is named p53 because of it molecular weight53 KD.p53 gene is…

Q: Which of the following is NOT a description of an epigenetic modification? A. regulatory patterns…

A: Changes in gene expression that are not produced by changes in DNA sequences but are caused by…

Q: In a suppressor interaction, produce(s) a protein complex that is 1 mutation, active . 1 mutation,…

A: Any change or alteration to the composition of DNA other than recombination of the DNA is called a…

Q: Proteins that influence RNA synthesis by binding directly to DNA are called_____ . a. promoters c.…

A: The conversion of the DNA into the mRNA is termed as the transcription and the conversion if this…

Q: In order for a cell to begin to replicate its DNA: a. Lamin proteins must be phosphorylated b. p53…

A: Cell division is a procedure in which a parent cell divides into two daughter cells. The cell cycles…

Q: Which of the following is NOT true about mutations?   A. Mutations can be harmful but not…

A: Mutations are defined as any heritable change in the genetic makeup of an organism. It is a sudden…