When a mitogen binds to a receptor on a cell, the signal is transported via a signaling pathway into the cell and a new cell cycle can start. Describe this signal path. Explain what would happen to this one signal path if the cell simultaneously detects that there is damaged DNA in the cell.

Q: Describe what happens to the G1 cell cycle check point of a skin cell that is stimulated to divide…

A: Transformation of cells from one phase of the cell cycle to another is controlled by some external…

Q: Explain the difference between positive regulation of the cell cycle and negative regulation of the…

A: At various times, the progression of cells through the cell cycle is regulated by different…

Q: How does an intracellular receptor regulate gene expression in the cell? Describe briefly what…

A: Intracellular receptors found inside the cell. Typically in the nucleus and cytoplasm. They are…

Q: Which describes the cellular role of Ran?     facilitate release of nuclear proteins after…

A: Ran is a member of RAS superfamily. It is small protein with a 25kDa size.

Q: What enzymes are involved in DNA replication and how are they regulated via cell signaling?

A: DNA replication is one of the most important steps of any journey of genetic material. It is…

Q: Determine what happens as if the spindle fiber failed to form in a cell during the process of…

A: Ans- Spindle fiber are extremely necessary for cell division. These are the protein structure that…

Q: True or false. The cell walls of plants prevent the process of cytokinesis.

A: The physical process of cellular division known as cytokinesis separates a parental cell's cytoplasm…

Q: According to the picture above, the cell shown is going through [Select ] and is in the [Select ]…

A: Ans- In the picture above, the cell is going through the meiotic cell division. Meiosis is the…

Q: Suppose that you joined a group of scientists working on a protein which has nuclear localization…

A: Nuclear transport alludes to the mechanisms by which particles get across the nuclear membrane of a…

Q: The decline of MPF activity at the end of mitosis is due to    a. an increase in the cell's…

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

Q: Describe the molecules that control the cell cycle through positive and negative regulation.

A: Explanation is shown below.

Q: A cell with one mutation is unable to complete cell division (mitosis).  What intracellular…

A: Mutations are irreversible and are passed on to the daughter cells during mitosis. Certain genes are…

Q: explain how p53 functions in a cell that sustained DNA damage to prevent progression of that cell…

A: p53 induces numerous different target genes and blocks the different stages of progression of tumor…

Q: Regulation of the cell cycle is very important. Explain what may happen if the mechanisms regulating…

A: A series of event that occurs in a cell to make it ready for division is the cell cycle.  There are…

Q: Suppose that you have cancer cell line X was treated with drug Y to increase the expression levels…

A: Given, X is a cancer cell line which was treated with a drug Y. It resulted in the increase of…

Q: In the context of the cell cycle, which cyclin is most important for the G1 to S transition, the G2…

A: * cell cycle is a series of events which takes place in cell for growth and division of cell. *…

Q: List examples of locations in the body where cell populations undergo rapid mitosis and why would…

A: Cell division is an essential process for the survival of an organism. Various factors such as…

Q: Certain types of cancerous lung tumors can secrete hormones normally made by the pancreas, adrenal…

A: Lung neoplasms are a form of cancer that occurs in the lung cells most likely in individuals who…

Q: Explain how the cell cycle is regulated in eukaryotic cells.

A: Cell cycle is the series of events that occur in a cell as it grows and divides into daughter cells.…

Q: In which stage of karyokinesis of mitosis reappearance of nucleolus occurs.

A: Cell cycle: It is a series of changes occur in a newly divided cell through which it duplicates its…

Q: Which stage of the cell cycle is the longest?   Why are onion root tips a good choice for viewing…

A: Cell division is referring to the process in which a living cell divides, thereby leading to the…

Q: In which phase of the cell cycle does hydroxyurea produce its main effect

A: Hi, Thanks For Your Question.  Answer : There Are 3 Main Phase Of Cell Cycle Interphase :  Growth…

Q: If a cell fails the Spindle Checkpoint, at which stage of the cycle would the cell arrest?

A: Cell cycle: It is a phages of events that a cell passes until it reproduces its replica. Usually…

Q: some cell divisions if the cell cycle consisted only of S-phase and M-phase.

A: There are two important phases in the cell division: Interphase and M- phase (Mitotic phase). Under…

Q: Colchicine is a poison that acts to inhibit the development of spindle fibres. Describe the effects…

A: Introduction: Colchicine is a medicine taken orally  for the treatments of gouts and Bechet's…

Q: During interphase of the cell cycle, a muscle cell was determined to contain less mitochondria than…

A: Muscle cells are specific for contraction. It allows for motions and facilitates bodily processes…

Q: In general which phase of the cell cycle has longer duration?

A: Interphase: During the cell division DNA duplicates and grow cell in interphase. It is the main…

Q: A scientist adds colchicine, a microtubule polymerization inhibitor, to a cell entering mitosis. At…

A: Colchicine is an alkaloid that is obtained from the plant Colchicum autumnale. Colchicine inhibits…

Q: During interphase of the cell cycle, a muscle cell was determined to contain less mitochondria than…

A: The cells are the unit of life.  based on the number of cells and organism may be unicellular or…

Q: This form of cell division is possible for a parent cell that is a somatic cell. (Choose one…

A: Answer: MITOSIS : It is the equational division, when a cell is divided in to two daughter cells…

Q: Shown here are two HeLa cancer cells that are just completing cytokinesis. Explain how the cell…

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

Q: Give the possible results if cells won’t undergo cell division or if the cell cycle happens rapidly…

A: Cell division is the process in which a parent cell divides into two or more daughter cells. There…

Q: Complete the questions below regarding the control of cell division. There were at least 7 different…

A: Cell Cycle and facts related with Cell Cycle --1- Cell Cycle is a vital process by which a single…

Q: Name the stages of mitosis in order, and describe the behavior and structure of the chromosomes at…

A: Mitosis creates 2 identical daughter cells. Each cell contains the same type and chromosomal number…

Q: Describe how cyclins and cyclin-dependent kinases are related. How do these molecules help regulate…

A: Cyclin dependent kinase or CDK donot work independently. They need cyclin. Cyckun CDK complex afd…

Q: describe the stages of the cell cycle   use the knowledge of the cell cycle to explain why…

A: Cell cycle is comprised of four steps and prepare the cells for cell division so that cell's content…

Q: Describe what a telomere is, and explain its role in cancer cells’ unlimited ability to divide.

A: A telomere is the end of a chromosome. It is made of repetitive sequences of non-coding DNA that…

Q: Why is a rapidly growing tissue, such as the root tip of a plant, a good model for studying the…

A: The root tip of a plant undergoes rapid cell divisions due to the presence of meristematic cells.…

Q: A tumor suppressor gene (TSG) codes for a protein that is part of the system that regulates cell the…

A: Answer :- Option (C) is correct. - The TSG is downregulated due to hypermethylation which may lead…

Q: Compare and contrast cell signaling in prokaryotes and eukaryotes

A: "Cells" communicate via their own chemical signaling system. Different chemicals, such as hormones…

Q: This protein is expressed in response to DNA damage, has the capability to arrest cell division

A: DNA contains all information necessary for a cell's (and thus the organism's) survival. The cell…

Q: Upon learning about the mechanism of apoptosis, the question asked was; Is cytochrome c being…

A: Cytochromes are redox-active proteins that contain heme as a cofactor, which has a central Iron atom…

Q: Suggest an explanation for the disappearance of the nucleolus during mitosis

A: The disappearance of the nucleolus starts during the prophase stage of mitosis. Not only does the…

Q: If a starfish sustains damage to an arm, it often grows a new one, as long as part of the central…

A: The phenomenon of regeneration involves the renewal, restoration and regrowth of cells and tissues…

Q: Explain why a G2 phase is needed in the cell cycle

A: G2 or Gap 2 phase is the 3rd phase (interphase) which comes after the S phase (DNA replication) and…

Q: in which stage of mitosis are all of the chromosomes lined up in the center of the cell

A: Cell is the basic structural and functional unit of life.

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.