Shared Flashcard Set

Details

ANSC 221 Wk 3
Animal Nutrition
74
Nutrition
Undergraduate 2
06/30/2018

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Cards

Term
Photosynthesis and cellular respiration complement each other
Definition
They are the reverse reactions of each other
Term
Photosynthesis
Definition
6CO2 + 6H2O + light --> C6H12O6 + 6O2
Term
Cellular respiration
Definition
C6H12O6 + 6O2 --> 6CO2 + 6H2O
Term
Three chemical reaction classifications
Definition
Decomposition, synthesis, and exchange reactions
Term
Decomposition reaction
Definition
An initial large molecule is broken down into smaller structures like in catabolic reactions
Term
Synthesis reaction
Definition
Two or more structures combine to form a larger structure like in anabolic reactions
Term
Exchange reaction
Definition
Groups exchanged between two chemical structures like in the production of ATP in muscle tissue
Term
Energy
Definition
Capacity to do work
Term
Two classes of energy
Definition
Potential and kinetic
Term
Potential energy
Definition
Stored energy
Term
Kinetic energy
Definition
Energy of motion
Term
Activation energy
Definition
The amount of energy required for a specific reaction to happen
Term
Exergonic reactions
Definition
Energy is released
Term
Endergonic reactions
Definition
Energy is supplied
Term
GE -> DE -> ME -> NE ->
Definition
Maintenance and production
Term
GE
Definition
Gross energy: energy found in feed
Term
DE
Definition
Digestible energy: energy that doesn't end up in feces
Term
ME
Definition
Metabolizable energy: energy left after feces, urine, and gas loss
Term
NE
Definition
Net energy: energy left after feces, urine, gas, and heat loss
Term
Enzymes
Definition
Catalysts that accelerate normal physiologic activities
Term
Enzyme nomenclature
Definition
Named based off of the reaction they catalyze
Term
Enzyme affect on AE
Definition
Decrease the activation energy of cellular reactions and increase the rate of product formation
Term
Cofactors
Definition
Molecules required to ensure that a reaction occurs
Term
The rate at which a chemical reaction occurs can be accelerated by...
Definition
An increase in enzyme concentration or an increase in substrate concentration
Term
Optimal temperature and pH are important because...
Definition
Temperatures that are too high or pH levels that aren't right result in denaturation with loss of function
Term
Oxidation
Definition
Loss of electrons
Term
Reduction
Definition
Gain of electrons
Term
Glucose oxidation
Definition
Step by step breakdown of glucose with energy release, CO2 and water formed
Term
Four possible outcomes for glucose
Definition
Pyruvate, ethanol, lactate, or complete oxidation
Term
Glycolysis
Definition
Glucose broken down into two pyruvate molecules, does not require oxygen, ten enzymes in cytosol participate, net production of 2 ATP
Term
Sufficient oxygen available after glycolysis
Definition
Pyruvate enters mitochondria
Term
Insufficient oxygen available after glycolysis
Definition
Pyruvate converted to lactate
Term
Intermediate stage occurs...
Definition
In the mitochondria
Term
Pyruvate get converted to acetyl CoA in...
Definition
the intermediate stage
Term
Citric acid cycle
Definition
Occurs in mitochondria, requires oxygen, acetyl CoA initial substrate, can use fatty or amino acids, creates 32 ATP molecules
Term
Parasympathetic nervous system
Definition
Stimulates digestion
Term
Sympathetic nervous system
Definition
Inhibits digestions
Term
Vagus nerve
Definition
Crucial for digestion to occur
Term
Three phases of gastric secretion
Definition
Cephalic phase, gastric phase, and intestinal phase
Term
Cephalic phase
Definition
Prior to food entry
Term
Gastric phase
Definition
Once food enters the stomach
Term
Intestinal phase
Definition
As partially digested food enters the duodenum
Term
Gastrin
Definition
Stimulates parietal cells (release HCl)
Term
Secretin and CCK
Definition
Released from intestines to inhibit HCl
Term
Lipogenesis
Definition
Formation of triglyceride
Term
Lipolysis
Definition
Breakdown of triglyceride into glycerol and fatty acids
Term
Gluconeogenesis
Definition
Formation of glucose from noncarb sources (fat, amino acids)
Term
Glycogenesis
Definition
Formation of glycogen from glucose
Term
Glycogenolysis
Definition
Breakdown of glycogen into glucose
Term
Ruminant utilization of carbohydrates
Definition
Use VFAs as a primary energy source
Term
Non-ruminant utilization of carbohydrates
Definition
Term
Amylase
Definition
Help with carbohydrate digestion
Term
Absorption occurs in...
Definition
The small intestine
Term
Lack of amylase in dogs and cats
Definition
Amylase not needed when diet consists of such small amounts of carbohydrates
Term
Fermentation process in ruminants
Definition
Microorganisms digest feeds the ruminant can't and generates useful nutrients. The microorganisms function in fermenting VFAs, CO2, and CH4.
Term
Three main VFAs
Definition
Acetic acid, propionic acid, and butyric acid
Term
Rumination
Definition
Aids reverse peristalsis in ruminants
Term
Eructation
Definition
Belching of gas
Term
Excessive fermentation causes
Definition
Bloat: distended abdomen
Term
Pepsin
Definition
Functions in protein digestion
Term
Pepsinogen
Definition
Inactive form of pepsin
Term
HCl
Definition
Turns pepsinogen into pepsin
Term
Excess dietary protein
Definition
Results in amino acids being used for energy or converted into fat for storage
Term
Synthesized by microbes
Definition
High quality protein, protein from non-protein nitrogen, and B vitamins
Term
Bile
Definition
Produced by liver, helps breakdown fats
Term
Lipase
Definition
Used for lipid digestion
Term
Pancreatitis in dogs and cats
Definition
Inflammation disrupts the flow of enzymes into the digestive tract and enzymes end up in the abdominal area, the enzymes continue functioning in the wrong location and the body begins to digest itself
Term
Nuclease
Definition
Digests nucleic acids
Term
Acetic acid and butyric acid
Definition
Turned into acetate, BHBA and used for energy and fatty acid synthesis
Term
Propionic acid
Definition
Turned into glucose, used for energy, fatty acid, glycogen and triglyceride syntheses: NADPH production
Term
Free fatty acids
Definition
Turned into triacylglycerol, used for energy, triglyceride, and fatty acid syntheses
Term
Triacylglycerols
Definition
Turned into urea and excreted in urine and saliva
Term
Amino acids
Definition
Remain amino acids or turned into proteins, used for protein synthesis and amino acid synthesis
Term
Non-ruminant utilization of carbohydrates
Definition
Use glucose as a primary energy source
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