Which of the following statements about the cell cycle is TRUE?   a. The protein APC blocks cells from entering anaphase   b. CDKs are degraded after each cell cycle phase by the addition of a ubiquitin chain to the proteins   c. A kinase is a protein that adds a ubiquitin chain to other proteins Cyclin activity is necessary, but not always sufficient, for CDK activation   d. Cyclin proteins must be degraded before Cdk proteins can be activated

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

A: Cyclins are one which drives the cell cycle events by working with enzymes called Cyclin-dependent…

Q: The protein p53 is activated when the cell's DNA is damaged. p53 helps to arrest the cell cycle in…

A: Cell division is controlled by a protein that is encoded by a tumor suppressor gene. Uncontrolled…

Q: What would be the effect on the cell cycle if a cell acquired a mutation that rendered each of the…

A: The cell cycle is a series of events that take place in a cell as it grows and divides. A cell…

Q: Developing B cells that fail to make productive D to J heavy-chain rearrangements on both homologous…

A: B cells get matured in the bone marrow or in the lymph node. Mature B cells express antibodies on…

Q: HIV is not an oncogenic virus, but it does allow for other viruses to affect oncogenes.  Describe a…

A: HIV is human immunodeficiency virus which makes the immune system weak and destroys the body's…

Q: Match each of the changes that can contribute to cancer with its correct description. Loss of…

A: Cancer is a disease where the cells grow uncontrollably. It may affect any part of the body and…

Q: Choose the item in column 2 that best matches each item in column 1.…

A: Cdk - cyclin dependent kinases is one.  APC - anaphase promoting Ced mutants - cell death mutants…

Q: Put a checkmark next to any of the following scenarios that would make it MORE likely that a cell…

A: Need to find all the options that produce uncontrollable cell division  and to increase chance of…

Q: In a healthy cell, which of the following proteins will be activated in order to suppress cell…

A: This protein controls cell division by acting as a tumor suppressor, which means that it prevents…

Q: Cells require growth factors from other cells to proliferate   B. Growth Factors must enter cell…

A: Growth factor signalling is a cell signalling pathway that regulates the growth and development of…

Q: P53 is a tumor suppressors protein.   The protein is present in the cell at all times but is…

A: Answer) E It would spread to all parts of the body. p53 gene act as a tumor suppressor gene and get…

Q: Tumor Suppressor Genes are often called as gatekeepers because: a. They signify their involvement…

A: The correct option is a i.e.They signify their involvement in governing the dynamics of cell…

Q: In which stage of the eukaryotic cell cycle is the genetic material properly referred to as…

A: Cell division is the process by which a cell divides into two daughter cells. Cell division is a…

Q: Why would the failure of the p53 tumor supressor gene be more likely to cause cancer in a seventy…

A: Tumor protein p53, which plays a crucial role in the cellular response to DNA damage, is one of the…

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: 8. Cell radiosensitivity depends on the part of the cell cycle cell is in. The most sensitive phase…

A: Q 8.  Answer :- a) G2 phase  Because the cell cycle phase that also to be  determines as a cell's…

Q: Which of the following statements are correct about cytoplasmic signaling in cancer cells? Multiple…

A: Metastasis is a significant cause of mortality worldwide. Cancer cells acquire genetic alterations…

Q: Eukaryotic cells coordinate dna replication with cell cycle so that the genome is copied once per…

A: Introduction :- Eukaryotic cells have a complex and highly regulated DNA replication process that is…

Q: The cyclin/cyclin-dependent kinase pair that is active during the M phase of the cell cycle is…

A: Cyclin and cdk complexes are important for cell cycle progression.

Q: In attempting to design a drug that will impede cell cycle progression in ovarian cancers cells. you…

A: The answer is none of these.The cell cycle is a tightly regulated process that controls the growth…

Q: Which of the following are charcteristics you would expect of a circulating tumor cell that has…

A: An epithelial cell that has undergone transition into a mesenchymal cell, helps in both…

Q: You are working in a cell biology lab that investigates non-small cell lung cancer cells, which of…

A: Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, accounting for around 85%…

Q: What are two factors that can influence a yeast cell’s decision to initiate a new round of the cell…

A: The eukaryotic cell cycle is a complex biological mechanism that has characterized several…

Q: Which of the following associated with cancer development would you expect to be tumor promoters and…

A: Introduction: A chemical that can increase the risk of cancer by a secondary mechanism unrelated to…

Q: Anaphase  A. Is the phase during which sister chromatids separate and move to opposite poles  b.…

A: Mitosis is the division of a diploid (2n) mother cell and production of two diploid (2n) and…

Q: Choose the letter of the best match from the following. A. Spindle Checkpoint B. Checkpoint to look…

A: G1= C.Time of the most cell growth(longest and first phase of the cell cycle ) S=E. Duplicate copy…

Q: This phosphatase removes an inhibitory phosphotyrosine phosphate from serine protein kinase,…

A: For cell proliferation and cell growth, cell division occurs. A cell undergoes a cell cycle before…

Q: Which of the following would be expressed at varying levels during different parts of the cell…

A: Cyclins Cyclins are groups of protein that work together to regulate  different phases of the cell…

Q: You are studying a new fungus, G. lucasus, and are interested the molecules that control the cell…

A: The method known as flow cytometry allows for the quick analysis of individual cells or particles as…

Q: One example of an oncogene is ras. Ras is a G protein that is activated when growth factors bind to…

A: Activating mutations in proto-oncogenes that cause growth. Protooncogenes are the genes which causes…

Q: The cell enters g1 and cyclin D binds with CDK4/6  Increases in cyclin D expression prevent p21/p27…

A: cell cycle goes through following steps in a sequence:-

Q: Which of the following steps are correct about multistep tumorigenesis (select all that apply)?…

A: When a normal cell undergoes uncontrolled differentiation and division it causes tumor cells. It is…

Q: Which of the following statements concerning p53 is NOT correct? O a. O b. O C. p53-dependent…

A: p53 is a gene that helps to control the cell cycle and prevent cells from becoming cancerous. It…

Q: What would be the effect on the cell cycle of a drug that inhibited each of the following? a. MPF b.…

A: Cell division is a natural process in which a parent cell divides into two daughter cells. Cell…

Q: C. the cell immediately enters mitosis

A: The cell cycle is the series of events that occur in a cell leading to its division and duplication.…

Q: What is a role of cyclines in regulating the cell cycle? Describe the significance of checkpoints…

A: The "cell cycle", also known as "cell division", is a set of processes that occur in a cell leading…

Q: Which of the following proteins would least likely promote arrest of cell division or apoptosis?…

A: Apoptosis:  A sort of planned cell death known as apoptosis, or "falling off," can place in…