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24 Cards in this Set
- Front
- Back
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Cell surface Glycoproteins (____) serve as _______ _______.
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Lectins; docking tethers
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For salmonella to cause a problem it takes ____ organisms in one ingestion to cause a problem
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10^5
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Competitive Exclusion:
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bacteria compete to attach to lectins
-A very safe weapon for veterinarians and animal scientists to use to protect animals against pathogenic organisms that enter the digestive tract |
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the direct fed microbials (__________) that are most effective are those that:
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originate from the same animal for which it is intended to be used
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Why is it important for young animals to receive colosterum w/in first 24 hrs?
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-because the anitibodies need to be absorbed
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Pinocytosis:
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pinching off of antibodies that leads to absorption
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Gut Closure
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after first 24hrs things are digested, not absorbed through pinocytosis
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Where is lactase produced?
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-in the small intestines mucosal cells
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Where is lactose produced?
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in mammary glands
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What is the major function of lactose in milk?
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-act as an osmotic pump so milk contains lots of water
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Osmosis:
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water molecules move towards the side of a semi permeable membrane that had the higher concentration of non-diffusible particles
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Red blood cells:
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“erythrocytes” (biconcave disc)
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Crenate:
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to shrivel/ shrink
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Which solution of red blood cells would be a 0.9% (or 9000 ppm) NaCl solution or a 5% glucose solution?
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isotonic
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Which solution of red blood cells would have the most non-diffusable particles?
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isotonic
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Which solution of red blood cells would eventually have a red color?
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hypertonic
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Which solution would have red blood cells that remain the same?
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isotonic
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Which solution would have red blood cells shrink?
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hypertonic
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Which solution would have red blood cells that swell and burst?
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hypotonic
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Lactose Intolerance
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AKA Lactose deficiency
-approximately 20% of US population is lactose intolerance -is more common in certain ethnic and racial groups: (asian, black, native American and Hispanic) |
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LI symptoms:
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diarrhea, intestinal cramps, nausea, bloating, flatulance (colic
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Test for LI and how they work.
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drink lactose liquid, test blood glucose periodically- if BG increases you are metabolizing the lactose
Hydrogen breath test- if high then bacteria are fermenting lactose Stool acidity test- pH drops in you are not metabolizing |
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What is whey?
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-byproduct of the cheese making industry
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2 types of milk protein:
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casein- in cheese
whey- lactoferrin |
