Review/Oorsig Volume 23, Issue 01 - Page 10

Oorsig/Review 1. Trace minerals are required at concentrations of less than how many parts per million? a. b. c. d. e. 1 10 100 1000 10,000 2. Which 4 trace minerals are generally recognized as the most problematic in grazing beef cattle? SMS code: a71102 6. A study in the United States have found what percentage of infertile men to have elevated levels of ROS in their seminal plasma? a. b. c. d. e. 15% 4% 34% 40% 9,8% 7. Reactive oxygen species are generated by sperm metabolism and are required for: a. b. c. d. e. H, O, Ag, C P, S Ca, S Co, Fe, Mo, Mg Zn, Se, Mn, Cu I, K, He, Cl a. b. c. d. e. Maturation Capacitation and acrosome reaction Modification of cellular compounds None of the above All of the above a. b. c. d. e. Too much oxygen in the air Increased exposure to or production of oxidants Lack of oxygen All of the above None of the above a. b. c. d. e. Sperm Leucocytes Scar tissue A & B B & C a. b. c. d. e. Vitamin A Vitamin C Glutathione β-carotene All of the above a. b. c. d. e. Normal cellular processes (sperm production) Inflammatory events (disease conditions) Stressful events (weaning, mating) and environmental factors (heat stress, drought) All of the above None of the above a. b. c. d. e. Copper, Zinc, Manganese Sulphur, Copper, Selenium Molybdenum, Magnesium, Manganese Cobalt, Calcium, Potassium Iodine, Sodium, Carbon 3. Oxidative stress is caused by 4. Non-enzymatic antioxidants include the following 5. Spermatozoa are unique in their susceptibility to ROS since they lack the necessary cytoplasmic-enzyme repair systems that make them unable to restore the damage induced by oxidative stress. a. b. c. d. e. True False Maybe Don’t know All of the above Do you want to complete your CPD on the traditional webplatform or SMS system? Use the following codes for sms or follow the link from www.vet360.vetlink.co.za Some of the latest articles from Vetlink 8. ROS is produced by 9. Reactive oxygen species are produced by living organisms as a result of: 10. Iron is a potent antagonist of which minerals? • • • 10 Abortion and Stillbirth Investigation - Part 01 AC/1943/18 SMS code = a38356 Abortion and Stillbirth Investigation - Part 02 AC/1969/18 SMS code = a82563 Abortion and Stillbirth Investigation - Part 03 AC/2013/18 SMS code = a33133