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1. A nurse is caring for a patient with liver failure and is performing an assessment in the knowledge of the patients increased risk of bleeding. The nurse recognizes that this risk is related to the patients inability to synthesize prothrombin in the liver. What factor most likely contributes to this loss of function? A) Alterations in glucose metabolism B) Retention of bile salts C) Inadequate production of albumin by hepatocytes D) Inability of the liver to use vitamin K Ans: D Feedb...

1 The photograph shows parts of Tussilago farfara. This is a native species of plant that grows in North Africa and Central Asia. © Zoonar GmbH / Alamy Stock Photo This plant can be used as a medicine. (a) Describe how the antibacterial activity of different parts of this plant could be compared

1 Aerobic respiration is made up of several stages. (a) Which is the correct order of the stages of respiration required for the complete oxidation of glucose? (1) A B C D glycolysis Krebs cycle link reaction glycolysis link reaction Krebs cycle link reaction Krebs cycle glycolysis Krebs cycle glycolysis link reaction (b) Write a balanced equation for the complete oxidation of glucose in aerobic respiration. (2) ........................................................................

1 Skin flora provide a barrier, protecting the body from infection by bacteria. (a) Which of the following also act as barriers, protecting the body from infection by bacteria? (1) A antigens and stomach acid B antigens and interferon C interferon and skin D skin and stomach acid (b) The diagrams show the effects of different methods of washing hands on skin flora. The dark areas show the presence of microorganisms and the light areas show clean areas

1 Vitamin C is a dietary antioxidant. Spinach is a plant that produces edible leaves with a high vitamin C content. (a) Explain the link between dietary antioxidants and the risk of cardiovascular disease (CVD).

1 Red blood cells transport oxygen to the cells of the body. Read through the following description of how oxygen is transported from the lungs to respiring cells. Complete the description by writing the most appropriate word or words on the dotted lines. Oxygen binds to .............................................................. inside red blood cells. Oxygen binds to this molecule in the lungs where the partial pressure of oxygen is ......................................................

For questions 1–10, in Section A, select one answer from A to D and put a cross in the box . If you change your mind, put a line through the box and then mark your new answer with a cross . 1 A ray of light in air is incident on a glass surface. The angle of incidence is less than the critical angle. Which of the following describes what happens to the ray of light? A partially reflected and partially transmitted B refracted away from the normal C totally internally reflected D transmi...

Photons and energy levels Minimum energy for pair production Emin = hfmin = 2E0 Minimum energy for annihilation Emin = hfmin = E0 Threshold frequency f=φ/h

3000 B.C. Egyptians madetoolswithpowdermetallurgy • 1900’s tungsten filament for light bulb• 1930’s carbide tool materials• 1960’s automobile parts • 1980’s aircraft engine turbineparts• Currently, North American P/Msalesareover$5billion annually

This document describes 4 case studies involving different patients. Case 1 is about Mrs. Jackson, who has been admitted with pneumonia and is diagnosed with tuberculosis after a positive sputum test