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A Level Biology The Heart and Circulatory Answers Total Marks:/34 2022 AQA, OCR, Edexcel A Level Answer Marks 1. a) i) Movement of fluid in one direction ii) iii) – The heart causes high pressure in the arteries - The elastic tissue helps to regulate pressure -Smooth muscle helps to redistribute blood/ vasoconstriction, vasodilatation. iv) Forces blood to flow in one direction/ prevents back flow of blood. b) i) – Heart and lungs - Heart and rest of the body 1 mark 8 ma...

A Level Physics Capacitors (Answers) Total Marks:/30 2022 AQA, Edexcel A Level Solution: 2 1. George wishes to explore the rules for multiple capacitors. To do this, he constructs a circuit using three: C1 is connected in series with C2; these are both connected in parallel with C3. All are connected to a 6 V power supply. C 1 = 10 μF, C 2 = 20 μF andC 3 = 50 μF . Total for Question 1: 13 (a) Explain in terms of the flow of electrons how a potential difference is built up across a ...

Question 1 2 / 2 pts Question 2 2 / 2 pts Question 3 2 / 2 pts Advanced Pathophysiology Week 3 Quiz- Version 2 In some anemias, the erythrocytes are present in various sizes, which is referred to as anisocytosis. poikilocytosis. microcytosis. isocytosis. Additional descriptors of erythrocytes associated with some anemias include anisocytosis (assuming various sizes) or poikilocytosis (assuming various shapes) (Figure 26-1). What is the pathophysiologic process of aplastic anemia? ...

1 Question 1 2 / 2 pts Question 2 2 / 2 pts Question 3 2 / 2 pts Advanced Pathophysiology Week 3 Quiz Clinical manifestations of mild to moderate splenomegaly and hepatomegaly, bronze-colored skin, and cardiac dysrhythmias are indicative of which anemia? Sideroblastic Aplastic Pernicious Iron deficiency Mild to moderate enlargement of the spleen (splenomegaly) and liver (hepatomegaly) occurs. Occasionally, abnormal skin pigmentation (bronze colored) is seen. Heart rhythm disturba...

1 Advanced Pathophysiology Week 1 Quiz Question 1 2 1 2 pts Cells in may act as a reservoir in which HIV can be relatively protected from antiviral drugs. the lungs the central nervous system the thymus gland bone marrow HIV may persist in regions where the antiviral drugs are not as effective, such as the CNS. Question 2 2 1 2 pts What is the role of reverse transcriptase in HIV infection? It transports the RNA into the cell nucleus. It converts single DNA into double-stranded DN...

1 A Level Physics Nuclear Physics 2 (Answers) Total Marks:/30 2022 AQA A Level 2 1. The equivalence of mass and energy, quantified by Einstein’s famous equation E = mc2, underpins all nuclear reactions. (a) Calculate the energy equivalent of the following: i. The mass of an electron. Total for Question 1: 13 [2] ii. A human weighing 700 N. [2] [4] (b) Calculate the final mass when an 4He nucleus is taken from rest to having kinetic energy of 5.0 MeV. Will this change be an inc...

A Level Physics Gravitational Fields 2 (Answers) Total Marks:/30 AQA, Edexcel A Level 1. The graph below shows the variation of the orbital period squared with the radius cubed for Jupiter’s moons. Total for Question 1: 10 (a) Define a gravitati on al field. [1] G 2 (b ) By equating the centripetal force and the gravitational force on a planet, show that T 2 = 4π r3. [4] 2 Solution: mv = GmM → v2 GM r r2 r Since the planet is assu m e =d to be moving in a circle, v = 2πr T ...

A Level Physics Electric Fields 1 (Answers) Total Marks:/30 AQA, Edexcel, OCR A Level

1 Chamberlain College of Nursing NR 505 Week 3 Quiz, NIH Training Questions with Answers. 1. Identify the most influential event that led to the HHS Policy for Protection of Human Research Subjects: a. Nuremberg trials b. Syphilis Study at Tuskegee c. Jewish Chronic Disease Hospital Study d. Willowbrook Study 2. What are the three ethical principles that constitute the basis for the HHS Human Subjects Regulations (45 CFR 46)? A. Honesty, Trust, Respect B. Informed consent, IRB review...

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