Correct and rewrite the statement by changing the biological term that is underlined for each statement: (i) The theory of Inheritance of Acquired Characters was proposed by Watson and Crick. (ii The protective sac which develops around the developing embryo is called the Pericardium. (iii) Maintaining balance of the body and coordinating muscular activities is carried by the cerebrum. (iv) The kidney is composed of number of neurons. (v) The part of the eye which can be donated from a clinically dead person is the Retina.
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- A 30 - year - old woman was undergoing therapy for b-thalassemia,a recessive trait caused by absence of or reduced synthesis ofthe hemoglobin b chain, a subunit of the oxygen-carrying moleculein red blood cells. In this condition, red blood cells are rapidlydestroyed, freeing a large amount of iron, which is deposited in tissuesand organs. The blood transfusions the patient had received every twoor three weeks since the age of 7 to stave off anemia were furtheraggravating iron buildup. Her major organs were showing damage, andshe was in danger of death from cardiac disease. Her physician suggestedthat she consider undergoing a hematopoietic (bone marrow)stem cell transplant (HSCT). Since these stem cells give rise to redblood cells, such a transplant could potentially restore her health. Whilethis might seem like an easy decision, it is not. Advanced cases havea high risk (almost 30 percent) for transplantation-related death. At thispoint, the woman is faced with a difficult and…A 30 - year - old woman was undergoing therapy for b-thalassemia,a recessive trait caused by absence of or reduced synthesis ofthe hemoglobin b chain, a subunit of the oxygen-carrying moleculein red blood cells. In this condition, red blood cells are rapidlydestroyed, freeing a large amount of iron, which is deposited in tissuesand organs. The blood transfusions the patient had received every twoor three weeks since the age of 7 to stave off anemia were furtheraggravating iron buildup. Her major organs were showing damage, andshe was in danger of death from cardiac disease. Her physician suggestedthat she consider undergoing a hematopoietic (bone marrow)stem cell transplant (HSCT). Since these stem cells give rise to redblood cells, such a transplant could potentially restore her health. Whilethis might seem like an easy decision, it is not. Advanced cases havea high risk (almost 30 percent) for transplantation-related death. At thispoint, the woman is faced with a difficult and…(d) State whether the following statements are True or False. If False rewrite the correct form of the statement by only changing the last word of the statement. (i) The alpha cells dfthe pancreas secrete insulin. (ii) Duplicated chromosomes remain attached at a point termed centrosome. (iii) The number of pairs ofautosomes in man is 22. (iv) Penicillin obtained from si fungus is an example of an antibody. (v) Plants that manuíacture their own food are termed heterotropłis.
- Marfan syndrome is due to a mutation in a gene that encodes aprotein called fibrillin-1. It is inherited as a dominant trait. Thefibrillin-1 protein is the main constituent of extracellular microfibrils.These microfibrils can exist as individual fibers or associatewith a protein called elastin to form elastic fibers. People with thedisorder tend to be unusually tall with long limbs, and they mayhave defects in their heart valves and aorta. Let’s suppose aphenotypically unaffected woman has a child with a man whohas Marfan syndrome.A. What is the probability this child will have the disease?B. If this couple has three children, what is the probability thatnone of them will have Marfan syndrome?Congenital and Genetic Disorders Pamela is age 43 and had declined the offer of having an amniocentesis during pregnancy. The basic routine ultrasound results and other prenatal examinations indicated normal fetal development. However, following delivery, the physical characteristics of Down syndrome became apparent. Twenty-four hours after delivery, the infant showed signs of heart failure related to a ventricular-septal defect and was scheduled for surgical repair of the defect. What specific type of disorder is Down syndrome? Would amniocentesis have indicated that the fetus had Down syndrome? Explain. Down syndrome may be caused by genetic anomalies? What are they? Explain how these anomalies are formed and the mechanism of how they are able to cause Down syndrome? (Support your answer with 9 possible outcomes) Based on the tests performed, could the ventricular-septal defect have been detected before the infant was delivered? Explain your reasoning. What would…For this exercise, an electron micrograph of secretory cells of the anterior pituitary is being used (Sandborn, E.B. (1970) Cells and Tissues by Light and Electron Microscopy, New York, New York: Academic Press, Inc.). The image originally measured 18.7 cm wide and 18.5 cm high with a magnification of 5200x. Given the width of the original micrograph at 18.7cm, what is the true width of unmagnified image? Show calculations.
- You have treated undifferentiated embryonic stem cells (ESCs) with sonic hedgehog (Shh)for several days. This should induce a neural fate in your ESCs and you hope that you havebeen successful in differentiating the ESCs into NSCs. What is one assay you could use to testwhether your cells had differentiated into NSC-like cells? Name and shortly describe the assay?Cancer stem cells (CSCs) are cancer cells (found within tumors or hematological cancers) that possess characteristics associated with normal stem cells, specifically the ability to give rise to all cell types found in a particular cancer sample. There are many biomedical engineering based approaches to detect CSCs. 1) What is the importance and advanatge of detecting CSCs? 2) What kind of systems have been developed to detect CSCs? Describe by giving examples. Please explain in detail with your own words.What are some of the ethical issues that arise from using embryonic stem cells?(b) To avoid these issues, scientists use IPSCs. What are the pros and cons to using iPSCs inrelation to embryonic stem cells?
- 9.1 Label structures A, B andC. (3) 9.2 State THREE functions of D. (3) Fertilisation usually takes place at Y. Why will a blockage at X: (a) Prevent fertilisation at YND 9.3 (1) (b) Not necessarily lead to infertility (2) (9) QUESTION 10Question 8. a) Name the three germ layers and describe their relative locations in embryos. b) Name two organs or organ systems that develop from each of the germ layers. a) The names of three germ layers are 1) Ectoderm 2) Mesoderm and 3) Ectoderm (Describe relative location) b) The ectoderm gives rise to the central nervous system and skin, the mesoderm specifies the development of several cell types such as bone, muscle, and connective tissue and the ectoderm cells become the linings of the digestive and respiratory system, and form organs such as the liver and pancreas.Discuss two reasons why the therapeutic use ofembryonic stem cells can present a problem.