4 globins - Study guides, Class notes & Summaries

What is hemoglobin composed of? - Answer- 4 heme, 4 iron, 4 globins What disorder does a defect in heme synthesis lead to? - Answer- porphyria What is the function of the enzyme methemoglobin-cytochrome C reductase in a red blood cell? - Answer- to keep iron in the ferrous state Which hemoglobin has a 200 times greater binding capacity for the hemoglobin molecule than oxygen? - Answer- carboxyhemoglobin What product is formed when ferrous iron of hemoglobin is oxidized to the ferric ...

Name 2 ways in which the structure of an erythrocyte complements its function. - ANSWER-Biconcave shape allows for more surface area Round so it flows through blood vessels Have no nucleus and few organelles so they don't use up the oxygen they are carrying List the layers of the heart wall from outermost to innermost - ANSWER-Epicardium Myocardium endocardium Name 3 differences between red blood cells and white blood cells - ANSWER-RBC do not have a nuclei and WBC do RBC have ...

AAB MT Hematology What is hemoglobin composed of? - ANSWER 4 heme, 4 iron, 4 globins What disorder does a defect in heme synthesis lead to? - ANSWER Porphyria Porphyria - ANSWER Deficiency in the enzymes of the porphyrin pathway leads to insufficient production of heme. The principal problem in these deficiencies is the accumulation of porphyrins, the heme precursors, which are toxic to tissue in high concentrations. What is methemoglobin? - ANSWER Methemoglobin is a form of hemoglobin...

What is hemoglobin composed of? 4 heme, 4 iron, 4 globins What disorder does a defect in heme synthesis lead to? Porphyria Porphyria Deficiency in the enzymes of the porphyrin pathway leads to insufficient production of heme. The principal problem in these deficiencies is the accumulation of porphyrins, the heme precursors, which are toxic to tissue in high concentrations. What is methemoglobin? Methemoglobin is a form of hemoglobin that contains ferric [Fe3+] iron and h...

How many liters of blood do adults have? - Answer4-6 True or False: Blood is a connective tissue - AnswerTrue Plasma makes up ______ % of the blood - Answer55% Which leukocytes are granulocytes? - AnswerNeutrophils, Basophils, Eosinophils Which leukocytes are agranulocytes? - AnswerLymphocytes (T cells & B cells), Monocytes & Macrophages Erythrocytes make up _____% of the hematocrit - Answer37-52% Plasma makes up _____% of hematocrit - Answer47-63% Plasma is ____% water - An...

AQA A Level Biology: Year 1 -Mass Transport In Animals Why is mass transport important ? of substances across cell membranes It maintains the diffusion gradients which allow the exchange What the adaptations of red blood cells? 1. Small/thin - pass through the narrow capillaries Similar diameter to capillary lumen - short diffusio path 3. Biconcave so they have a large SA:V- haemoglobin is close to the surface 4. No organelles so they can carry more haemoglobin Describe the ...

What is hemoglobin composed of? - ANSWER 4 heme, 4 iron, 4 globins What disorder does a defect in heme synthesis lead to? - ANSWER Porphyria Porphyria - ANSWER Deficiency in the enzymes of the porphyrin pathway leads to insufficient production of heme. The principal problem in these deficiencies is the accumulation of porphyrins, the heme precursors, which are toxic to tissue in high concentrations. What is methemoglobin? - ANSWER Methemoglobin is a form of hemoglobin that contains ferric...

What are the 5 functions of blood? - CORRECT ANSWERS-1. Transporting blood gases, nutrients, hormones and waste 2. Defense against toxins and pathogens 3. Restriction of fluid loss 4.Maintaining of pH 5. Stabilization of body temperature What percentage of plasma is water? - CORRECT ANSWERS-90% What mostly produces the proteins for the plasma? - CORRECT ANSWERS-The liver What are the three proteins found in plasma? - CORRECT ANSWERS-Albumin Globin Fibrinogen What percentage is ...

Know function and life span of RBCs and platelets. RBCs or erythrocytes: the most abundant cells of the blood – primarily responsible for tissue oxygenation Contains hemoglobin (carries the gases and electrolytes)  regulates diffusion through a cell’s plasma membrane. • Mature erythrocyte lacks a nucleus and cytoplasmic organelles (e.g., mitochondria),  cannot synthesize protein or carry out oxidative reactions (CANNOT UNDERGO MITOTIC DIVISION) • Has a limited life span of abo...

Which nursing role is not directly involved when providing family-centered approach to the pediatric population? 1. Advocacy 2. Case management 3. Patient education 4. Researcher - Answer 4. Researcher A nurse is working with pediatric clients in a research facility. The nurse recognizes that federal guidelines are in place that delineate which pediatrics clients must give assent for participation in research trials. Based upon the clients age, the nurse would seek assent from which child...