Welcome to your Edexcel B A2 Biology 4 A mutated gene that causes cancer. Hypogene Oncogene Zymogene IndigeneStem cells cannot be used in one of the following instances. Making new brain cells to treat people with Parkinson's disease. Using adult stem cells to treat most diseases. Rebuilding bones and cartilage. Making replacement heart valves.Which of the following is not an example of an effector in action? A muscle contracting to move the arm. An injury due to an accidental fall. A gland releasing a hormone into the blood. A muscle squeezing saliva from the salivary gland.Which is not a role of soil micro organisms in relation to the growth of plants? Fixation of Potassium Formation of soil aggregation Help in absorption of nutrients Fixation of nitrogenThe most common form of cancer in men. Throat cancer Penile cancer Prostate cancer Skin cancerSelect the incorrect statement regarding stem cells. Stem cells that can produce any type of cell are described as pluripotent. Medical applications of stem cells is called stem cell therapy. A stem cell is a cell that can divide an unlimited number of times. In the adult, stem cells are found throughout the body.The main cardiac control region of the brain. Hypothalamus Cerebellum Medulla oblangata CerebrumThe most common form of cancer in women. Ovarian cancer Throat cancer Lung cancer Breast cancerA group of specialized cells which can detect chnages in the environment called stimuli. Effectors Neurotransmitters Receptors Spinal cordAny agent that causes cancer is called a _______. Hallucinogen Isoantigen Carcinogen ChalcogenWhich type of cells secrete insulin? Beta cells Microglial cells Osteoclast Alpha cellsWhich type of cells secrete glucagon? Alpha cells Magakaryocyte Adipose cells Beta cellsCancer is often the result of activation of ____ to ____ and the inactivation of ____. Oncogenes, proto-oncogenes, tumor-suppressor genes Oncogenes, tumor-suppressor genes, proto-oncogenes Proto-suppressor genes, suppressors, oncogenes Proto-oncogenes, oncogenes, tumor-suppressor genesSelect the incorrect sentence out of the following. Soil contains only 2 types of micro organisms. Soil micro organisms play an important role in releasing nutrients. Most plants obtain their essential minerals from the soil. Cyanobacteria is a micro organism present in the soil.