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: Which statement is true about transposon? a. Transposon is known as a ‘jumping gene’. b.…

A: The science of genes and inheritance, or how particular characteristics or traits are transferred…

Q: The BRCA genes produce DNA repair proteins. Genetic testing is available that can determine if a…

A: BRCA1 (BReast CAncer gene 1) and BRCA2 (BReast CAncer gene 2) are proteins that aid in the repair of…

Q: Translational control of gene expression occurs within thea. nucleus.b. cytoplasm.c. nucleolus.d.…

A: A gene is the fundamental biology unit just like the atom. Gene expression is the process by which…

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 statements about gene regulation is false?   a. An operon contains DNA…

A: Introduction Gene expression is the process in which the genetic information present in the DNA…

Q: Yamanaka’s 2012 Nobel Prize was awarded for hisa. successful cloning of Dolly the sheep.b.…

A: Answer is b.) demonstration that transcription factors canepigenetically reprogram adult cells.

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: During the ________ phase, the cell accumulates building blocks and energy resources to copy its…

A: INTRODUCTION S phase This is the phase in which DNA is replicated, occurring between G1 and G2.

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: What is the advantage of using the neo gene to disrupt the function of a gene in knockout mice? a.…

A: Answer- Neo gene is amino 3'- glycosyl phosphotransferase which acts as a selectable marker in…

Q: What mRNA is transcribed from each DNA sequen а. 5'-GTTCTАС-3' 3'- -5' b. 5'-ATTTGAAA-3' 3'- -5' с.…

A: The method of constructing an RNA copy of a genetic sequence is known as transcription. That copy,…

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: Select the most complete list of correct structures involved in the process of transcription…

A: Transcription is a process involved in the expression of a gene that takes place in the nucleus of a…

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: onsense mutations occur when:  A.The new codon causes an incorrect amino acid to code for an…

A: A mutation is a mistake within the deoxyribonucleic acid sequence of an associate organism.…

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

A: When RNA has been transported to the cytoplasm, it is being translated into protein whose control is…

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: 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: Synthesis of proteins occurs by the process of A. replication B. cytokinesis  C. translation D.…

A: Synthesis of proteins occurs with the help of transfer RNA, messenger RNA and ribosomes. These…

Q: Which of the following is not a tumor suppressor gene? a.RET b.RB c.BRCA1 d.BRCA2

A: A normal cell undergoes regulated division, differentiation, and apoptosis (programmed cell death).…

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: gene in liver cells is "off". In the presence of a toxin, a repressor is removed and the gene is…

A: Repressor It refers to a protein which is invoved in the regulation of gene expression. This protein…

Q: Eukaryotes such as humans have linear chromosomes. In order to signal the end of DNA replication,…

A: Telomere is a stretch of repeating DNA sequences that is found at the end of each chromosome.…

Q: A binding site for RNA polymerase is called a .a. gene c. codonb. promoter d. protein

A: Transcription is a process in which one strand of DNA known as template strand is known as converted…

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

A: A gene is a DNA-based functional heredity unit that delivers instructions for the production of RNA…

Q: Eukaryotes such as humans have linear chromosomes. In order to signal the end of DNA replication,…

A: DNA replication is a process by which two identical copies of DNA are made. It is completed in 3…

Q: Kinesin is a Select one: and p53 is a a transcription factor, motor protein b. kinase, motor protein…

A: Kinesin protein moves along the microtubules in the cell. It consists of two heavy and two light…

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: 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: How does an embryonic stem cell differ from an adult stem cell?

A: Stem cells are used extensively in the experiments of cloning. It is studied under the domain of…

Q: After transcription, the molecule that is formed is a.complementary to part of one strand of DNA.…

A: Transcription is the process that is catalyzed by the RNA Polymerase enzyme. In this process a…

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…

Q: A scientist is interested in producing flowers with a darker red color. To do this, the scientist…

A: Si RNA is a small interfering or silencing RNA, which is a non-coding, double stranded RNA molecule.…

Q: The cancer gene ras produces mRNA containing an extra exon that includes a number of UAA codons.…

A: Ras genes are genes that make proteins involved in cell signalling pathways that controls cell…

Q: During gene expression, which information flows in the correct order?   A. RNA --> Transcription-->…

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: Which of the following is a key feature of stem cells?a. They have the ability to divide.b. They…

A: Stem cells are the earliest type of the cell in cell lineage in multicellular organism. They are…

Q: Which type of mutation in telomerase is associated with cancer cells? a. Mutations that produce an…

A: A mutation is an alteration or change in a deoxyribonucleic acid (DNA) sequence. Mutations can…