The normal function of the Rb protein is toa. act as a brake on cell division.b. produce retinoblastoma.c. facilitate retinal pigmentation.d. initiate DNA replication.

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: Which of the following describes an oncogene Group of answer choices A. a gene that stimulates cell…

A: Cancer is caused by changes in the DNA and is called genetic changes. Cancer is the growth of the…

Q: 19. Tumor suppressor genes/Oncogenes: Describe how viruses can lead to cancer formation in animal…

A: A microscopic infective agent that consists of nucleic acid (DNA/RNA) enclosed in a protein coat is…

Q: Defects in this gene have been associated with metastasis in pancreatic cancer. Select one: O a. APC…

A: Answer : Option "G" is correct - BRCA1

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: E-cadherin expression is___________ in the ________________cells that are situated around the edges…

A: EMT is the epithelial- mesenchymal transition.  Cells needs cadherins adhesion to other cell.…

Q: These genes are involved in normal cell growth and division, but if mutated, could become more…

A: Oncogenes are tumour-causing genes. They are mutated and abnormal that leading to uncontrolled cell…

Q: One of your patients, a six-year-old girl who suffers from Sickle cell anemia, an inherited blood…

A: Sickle cell anemia is a rare genetic disorder that follows an autosomal recessive inheritance…

Q: IGF-I acts to: a.      increase blood glucose b.      stimulate lipolysis c.      stimulate cellular…

A: The human growth hormone (HGH) is peptide hormone that is secreted by the anterior pituitary gland’s…

Q: From the list of answers below (A-D) select the correct answer(s). There may be more than one…

A: Need to find which of the statement is right from the following.

Q: A brief intrwhich introduces ALP as a diagnostic tool in cancer and create  a Graphical Abstract to…

A: ALP:- it is an enzyme known as alkaline phosphatase. It's level was founded to increase in many…

Q: Mutations in the RB gene are often associated with cancer. Explain how a mutation that results in a…

A: The cell cycle is the series of stages that allow the cell to pass from one cell division to…

Q: Which of the following would not be classified as an initiating carcinogen? a. Water b. Benzopyrene…

A: Carcinogens are substances or exposure to radiation that have the potential to increase an…

Q: Oncogenes:    A. Are dominant.  B. Cause cells to divide uncontrollably.  C. Are mutations of Proto…

A: Cancer is a disease which is caused by the uncontrolled growth of the cells, without regulation of…

Q: Which of the following statements are correct about viruses and cancer (select all that appy)?   A.…

A: Viruses are not considered living beings because they lack life-like properties such "as the…

Q: Select all of the statements that apply to transcytosis. A. Transfers dimeric IgG B. Transfers…

A: Introduction :- Transcytosis is the process by which a ligand is taken up by a receptor on one side…

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: Normal (nonmutant) tumor-suppressor genes often functiona. as negative regulators of cell…

A: Cancer is defined as the biological disorder in which the cells undergo uncontrolled growth and cell…

Q: Remember that DNA viruses inactivate tumor suppressor genes resulting in cancer. In Burkitt’s…

A: Translocation of c-myc occurs to one of the immunoglobulin foci. This leads to over expression of…

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: Which of the following would most likely promote necrosis?

A: The death of cells or any tissue of body is called as necrosis. Whenever tissue is not getting…

Q: How can benign tumors cause clinical problems? A. There is potential for metastasis B. They contain…

A: Benign tumours are harmless non cancerous tumours that grows only on one place.They cant invade or…

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: Notice the comment that after treatment your CD4 count should rise. Why does treatment allow CD4s to…

A: CD4 are white blood cells that fights pathogens and is essential part of immune system.The number of…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: