Exam 1 Flashcards
Why are ruminants able to use structural carbohydrates, e.g., cellulose, more efficiently than nonruminants?
The rumen is a fermentation system.
The microbes can breakdown fiber (cellulose) to VFAs.
VFAs examples
Acetate
Propionate
Glutyrate
What are VFAs absorbed by
Papillae
Pathway of amylopectin’s from mouth to small intestine
Amylopectin —> mouth (salivary amylase) —> stomach —> small intestine —> pancreas (pancreatic amylase) —> glucose, oligosaccharides (lactase, sucrose), maltose, alpha-dextrins
Inputs examples
Drinking
Feed
Metabolic
Outputs examples
Feces
Urine
Insensible - skin, lungs
Which route of water output accounts for the greatest proportion of water loss?
Insensible loss via lungs
Which property of water enables it to be such a great physiological solvent
Property polar compound
Decrease pH [lactic acidosis] (starch)
- Damage papillae
- (-) cellulytic bacteria
- Systemic acidosis
Glucose —> VFAs produce
2-4 ATP
True or false: glucose and galactose are geoisomers
False
True or false: pancreatic amylase breaks alpha1-4 bonds in starch
True
How many carbons does fructose contain
6
True or false: amylopectin has alpha1-2 branching points
False
True or false: C6H12O6 is the empirical form for mannose
True
Aliphatic side chains
Glycine
Alanine
Valine
Leucine
Side chains containing hydroxylic (OH) groups
Serine
Threonine
Tyrosine
Side chains containing sulfur atoms
Cytosine
Methionine
Side chains containing acidic groups or their amides
Aspartic acid
Asparagine
Glutamic acid
Glutamine
Side chains containing basic groups
Arginine
Lysine
Histidine
Containing aromatic rings
Histidine
Phenylalanine
Tyrosine
Tryptophan
Imino acids
Proline
What are the 2 sources of protein reaching the small intestine in the ruminant?
Undegradable protein
Microbial protein
Endo peptidases
Pepsin
Trypsin
Chymotrypsin
Exo peptidases
Carboxypeptidase
Pepsinogen (inactive zymogen)
Chief cells —> pepsinogen —(H+)—> pepsin
What turns on it’s own production
Trypsin
Trypsinogen —>
—(enteropeptidase) —> trypsin
Chymotrypsinogen —>
—(trypsin)—> chymotrypsin
Procarboxtpeptidase —>
—(trypsin)—> carboxypeptidase
What are the building blocks of protein and muscle
Amino acids
Galactose is synthesized from
Glucose
Hexoses examples
Glucose
Galactose
Mannose
Disaccharides examples
Sucrose
Lactose
Maltose
Starch examples
Amylose
Fiber examples
Cellulose
Hemicellulose
Lignin
Essential amino acids
Phenylalanine
Valine
Tryptophan
Threonine
Isoleucine
Methionine
Histidine
Arginine
Leucine
Lysine
What use the D,L nomenclature
Sugars
Neutral detergent fibers
Hemicellulose
Cellulose
Lignin
Neutral detergent soluble
Soluble carbohydrates
Starch
Organic acids
Protein
Pectin
Acid detergent fiber
Cellulose
Lignin
Acid detergent soluble
Hemicellulose
Boiling point is
100 C
Largest source of water loss is
Vaporization
Vaporization sensible example
Sweat
Vaporization insensible example
Skins and lungs
Fish excrete what through their urine
Nitrogenous waste
Birds excrete what through this urine
Uric acid