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Physiology Lecture Test 1
Flashcards for any quizzes up until and including test 1
266
Physiology
Undergraduate 1
01/28/2012

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Term
Term: Function of body parts; how life works
Definition
Physiology
Term
Term: How things work together
Definition
Integration
Term
Term: Physiology gone wrong; disease
Definition
Pathophysiology
Term
Term: Structural units of life
Definition
Cells
Term
Term: Stem cells specialize into specialized cells
Definition
Cell differentiation
Term
What are the three tissue types?
Definition
Muscular
Nervous
Epithelial
Term
What are muscular tissues made of?
Definition
Actin and myosin proteins
Term
What are the three types of muscular tissue?
Definition
Skeletal
Cardiac
Smooth
Term
What is the function of skeletal muscle tissue?
Definition
Moves skeleton and skin
Term
What is the function of cardiac muscle tissue?
Definition
Pumps blood; heart movements
Term
What is the function of smooth muscle tissue?
Definition
Responsible for involuntary muscle movement (artery tubes, gut, moves blood and chyme)
Term
What is the function of nervous tissue?
Definition
Conducts electrical impulses and is in control of skeletal muscles
Term
How fast is nervous tissue communication?
Definition
Very fast (within a millisecond)
Term
What is the function of epithelial cells?
Definition
Absorption and secretion of ions and molecules
Term
Where can epithelial tissues be found?
Definition
Lining digestive, respiratory and urogenital tracts; skin
Term
How is epithelial tissue classified?
Definition
Shape and thickness
Term
Term: Epithelium one cell layer thick
Definition
Simple epithelium
Term
Term: Epithelium more than one cell layer thick
Definition
Stratified epithelium
Term
Term: Epithelium with cilia
Definition
Ciliated epithelium
Term
Give an example of a place in the body where ciliated epithelium can be found
Definition
Respiratory tubes
Term
What is the internal environment of the body like?
Definition
Aqueous with extra-cellular fluid
Term
Term: Relative constancy of internal environment
Definition
Homeostasis
Term
What is the regular pH of the human body?
Definition
7.38-7.42
Term
Term: Regulates constant glucose except after meals; role of liver
Definition
Homeostatic Control System
Term
What is the total amount of body water in the human body?
Definition
42L
Term
What two fluids in the body make up extracellular fluid, and how many liters are there of each?
Definition
Interstitial fluid, 11L
Blood plasma, 3L
Term
Term: Fluid that makes up 2/3 of total body water
Definition
Intracellular fluid
Term
How much intracellular fluid is in the body?
Definition
28L
Term
Give an example of a natural buffer of the human body
Definition
HCO3
Term
Give a few examples of what homeostasis controls
Definition
Temperature
pH
Moisture
Term
What are the different types of chemical messengers?
Definition
Hormones
Neurotransmitters
Autocrine glands
Paracrine glands
Term
Term: Cycle of body patterns that happen once every 24 hours, including becoming sleepy and waking up
Definition
Circadian rhythms
Term
Term: Sensory neuron
Definition
Afferent Neuron
Term
Term: Motor neuron
Definition
Efferent neuron
Term
Term: BP
Definition
Boiling point
Term
Term: FP
Definition
Freezing point
Term
0 degrees Celsius in Fahrenheit
Definition
32 degrees Fahrenheit
Term
5 degrees Celsius in Fahrenheit
Definition
41 degrees Fahrenheit
Term
10 degrees Celsius in Fahrenheit
Definition
50 degrees Fahrenheit
Term
15 degrees Celsius in Fahrenheit
Definition
59 degrees Fahrenheit
Term
20 degrees Celsius in Fahrenheit
Definition
68 degrees Fahrenheit
Term
25 degrees Celsius in Fahrenheit
Definition
77 degrees Fahrenheit
Term
30 degrees Celsius in Fahrenheit
Definition
86 degrees Fahrenheit
Term
35 degrees Celsius in Fahrenheit
Definition
95 degrees Fahrenheit
Term
40 degrees Celsius in Fahrenheit
Definition
104 degrees Fahrenheit
Term
How many natural elements are there?
Definition
92
Term
What are cells made of?
Definition
Molecules and macromolecules
Term
99% of all living things are made up of which elements?
Definition
C H N O P S
Term
Term: Capacity to do work
Definition
Energy (E)
Term
Term: Stored E
Definition
Potential E
Term
Term: Active energy
Definition
Kinetic E
Term
What are the three subatomic particles?
Definition
Proton (P)
Neutron (n)
Electron (e-)
Term
What is the atomic weight of a:
Proton?
Neutron?
Electron?
Definition
P: 1
n: 1
e-: ~0
Term
Term: Number of protons in nucleus
Definition
Atomic number
Term
True/False: In an uncharged atom, the number of P = e-
Definition
True
Term
Term: Atoms with different numbers of neutrons
Definition
Isotopes
Term
What are the two types of ions?
Definition
Cations
Anions
Term
Term: Charged atom or molecule
Definition
Ion
Term
What are the functional groups we should have memorized?
Definition
OH- (Hydroxyl)
CH3 (Methyl)
COOH (Carboxyl)
NH2 (Amino)
PO4 (Phosphate)
Term
What does hydroxyl look like?
Definition
O=H
Term
What does methyl look like?
Definition
H-C-H
|
H
Term
What does carboxyl look like?
Definition
OH
|
C=O
Term
What does amino look like?
Definition
H-N-H
Term
What does phosphate look like?
Definition
O
|
O-P-O
|
O
Term
What are the types of chemical bonds?
Definition
Covalent
Hydrogen
Ionic
Term
What are the two types of covalent bonds?
Definition
Polar
Unpolar
Term
Term: Atom/molecule in which electrons are shared unequally
Definition
Polar
Term
Term: Atom/molecule in which electrons are shared equally
Definition
Nonpolar
Term
Term: Dissolves in water; water-loving, polar
Definition
Hydrophilic
Term
Term: Doesn't dissolve in water; water-fearing
Definition
Hydrophobic
Term
Term: Scale that determines acidity and alkalinity
Definition
pH scale
Term
True/False: If H+>OH- then the substance is a H+ donor
Definition
True
Term
True/False: If H+
Definition
False, it's an H+ acceptor
Term
Term: Minimizes change of pH, adds H+ or OH-
Definition
Buffer
Term
Term: Two adjacent regions with different concentrations of particles
Definition
Concentration gradients
Term
Term: Solute molecules move from high concentration to a low concentration
Definition
Diffusion
Term
Term: Diffusion of water
Definition
Osmosis
Term
Term: Force needed to prevent water movement
Definition
Osmotic pressure
Term
True/False: Carbohydrates are NOT an organic molecule
Definition
False, they are
Term
True/False: Carbohydrates are formed in a CH2O ratio.
Definition
True

ex) C6H12O6; C4H8O4
Term
Term: Single-ringed carbohydrate
Definition
Monosaccharide
Term
Term: Double-ringed carbohydrate
Definition
Disaccharide
Term
Term: Two monosacchardes coming together to form a disaccharide and a water
Definition
Condensation
Term
Give an example of a common monosaccharide
Definition
Glucose
Term
Give an example of a common disaccharide
Definition
Sucrose
Term
Term: Adding water to split molecules
Definition
Hydrolysis
Term
Term: Many chains of monosaccharides
Definition
Polysaccharide
Term
Name two very important polysaccharides in the cell membrane
Definition
Glyproteins
Glycolipids
Term
Term: Molecules made of sugars + proteins in the cell membrane
Definition
Glyproteins
Term
Term: Molecules made of sugars + lipids in cell membrane
Definition
Glycolipids
Term
Term: Fats; soluble in nonpolar solvents
Definition
Lipids
Term
Are lipids hydrophobic/hydrophilic?
Definition
Hydrophobic
Term
Term: 3 fatty acids + 1 glycerol
Definition
Triglyceride
Term
What is the carbon skeleton of glycerol?
Definition
C3 with 3 OH- groups
Term
Term: Fatty acids with only single C-C bonds
Definition
Saturated fatty acids
Term
Term: Fatty acids with one or more C=C double bonds
Definition
Unsaturated fatty acids
Term
Term: Glycerol + 2 fatty acids + phosphate + choline
Definition
Phospholipid
Term
Term: Four-ringed organic compound that performs some function to body (ex: testosterone)
Definition
Steroid
Term
Give an example of a VERY important steroid in the body
Definition
Cholesterol
Term
Term: Large molecules with diverse functions made of amino acids
Definition
Proteins
Term
Term: Unit of proteins
Definition
Amino acids
Term
How do amino acids differ?
Definition
Different R groups
Term
Term: Bonds that link amino acids
Definition
Peptide bond
Term
Which two groups do peptide bonds connect to link amino acids?
Definition
Carboxyl group to the amino group
Term
Show the makeup of an amino acid
Definition
H H O
| | |
N- C -C=OH
| |
H R
Term
True/False: # and sequence of amino acids are related to protein properties
Definition
True
Term
What are the four levels of protein structure?
Definition
Primary
Secondary
Tertiary
Quaternary
Term
Describe primary structure of proteins
Definition
A sequence of amino acids
Term
Describe secondary structure of proteins
Definition
Conformation; folding chain of amino acids
Term
Describe tertiary structure of proteins
Definition
Folding of alpha helix upon itself
Term
Describe quarternary structure of proteins
Definition
2 or more chains fitted together
Term
What are the two nucleic acids we learned about?
Definition
Deoxyribonucleic acid (DNA)
Ribonucleic acid (RNA)
Term
What structures make up a nucleotide?
Definition
PO4 (phosphate group) + C5 sugar + Nitrogenous base
Term
What are the two types of nitrogenous bases?
Definition
Purine
Pyrimidine
Term
What are the known purines?
Definition
Adenine - A
Guanine - G
Term
What are the known pyrimidines?
Definition
Cytosine - C
Thymine - T
Uracil - U
Term
Describe the difference between purines and pyrimidines
Definition
Purines - double-ring
Pyrimidine - single-ring
Term
Term: AMP
Definition
Adenine monophosphate
Term
What is the function of Cyclic AMP?
Definition
Amplifies hormone signals
Term
True/False: Coenzymes such as NAD are partly made from adenines
Definition
True
Term
List the difference between DNA and RNA
Definition
Deoxyribose sugar vs. Ribose sugar
T vs. U
2 stranded helix vs. 1 strand
Antiparallel strand vs. 1 strand
DNA + histone = chromosomes; RNA not in chromosomes
Term
Term: Monosaccharide + monosaccharide -> Disaccharide + H2O
Definition
Condensation
Term
How many bonds are between A-T?
Definition
2 Hydrogen bonds
Term
How many bonds are between C-G?
Definition
3 Hydrogen bonds
Term
Describe the hydrogen bonds between the base pairing
Definition
Easily broken and formed
Term
Term: Disaccharide + H2O -> Monosaccharide + Monosaccharide
Definition
Hydrolysis
Term
Show the hydrolysis of ATP
Definition
ATP -> ADP + Pi + E
Term
What are the three major parts to the Cell Theory?
Definition
All organisms are made of cells
New cells can only be made from pre-existing cells
All cells have the same fundamental chemical make-up
Term
What are the two broad classes of cells?
Definition
Prokaryote
Eukaryote
Term
What is cytoplasm made up of?
Definition
Cytosol
Organelles
Plasma membrane
Term
What are the two processes of cell metabolism?
Definition
Anabolism
Catabolism
Term
Term: Synthesis of cells - metabolism
Definition
Anabolism
Term
Term: Breakdown of cells - metabolism
Definition
Catabolism
Term
Term: Organelles that function as protein factories
Definition
Ribosomes
Term
Term: Segment of DNA; code for 1 polypeptide chain
Definition
Gene
Term
Term: Exiting of protein out cell membrane
Definition
Exocytosis
Term
What is the process of obtaining energy?
Definition
Food molecules are broken down by enzymes from lysosomes, and the energy is used to form ATP
Term
What are the functions of the cell membrane?
Definition
Maintaining cell membrane
Protection
Allowing movement in/out cell
Term
What is the function of organelle membranes?
Definition
Seperate organelle from rest of cell
Term
Term: Organelle that is the site of DNA/RNA synthesis
Definition
Nucleus
Term
True/False: Each somatic cell's DNA's genetic info is a little different
Definition
False, it's all the same
Term
Term: Sum of all genes in cell
Definition
Genome
Term
Term: DNA + Histone
Definition
Chromosome
Term
What are the three types of RNA?
Definition
Messenger RNA (mRNA)
Transfer RNA (tRNA)
Ribosomal RNA (rRNA)
Term
What is the function of mRNA?
Definition
Information; which amino acid added; sequence
Term
What is the function of tRNA?
Definition
Brings certain amino acid to ribosome
Term
What is the function of rRNA?
Definition
Add proteins; form ribosomes
Term
What is the function of the nuclear pores?
Definition
Allow molecules to pass in/out of nucleus
Term
Term: Small molecules in cytosol that make up macromolecules to provide cell functions
Definition
Precursors
Term
What are the two types of endoplasmic reticulum?
Definition
Smooth ER
Rough ER
Term
What is the function of rough ER?
Definition
Protein synthesis
Term
What is the function of smooth ER?
Definition
Site of lipid synthesis
Term
What is the function of secretory vesicles in the golgi apparatus?
Definition
They carry macromolecules to the cell membrane, and fuse to it for exocytosis
Term
What are the two types of endocytosis?
Definition
Phagocytosis (cell eating)
Pinocytosis (cell drinking)
Term
Term: Enzymes that use oxygen to remove wastes in cell
Definition
Peroxisomes
Term
Term: Powerhouse of cell; has double membrane; uses O2 and food to form ATP
Definition
Mitochondria
Term
What are the three types of protein fibers in the cytoskeleton?
Definition
Microfilaments
Intermediate filaments
Microtubules
Term
Term: Period of cell growth, protein synthesis, DNA replication
Definition
Interphase
Term
Term: Period of somatic cell division PMAT
Definition
Mitosis
Term
True/False: In mitosis, each daughter cell is an exact copy of parent cell
Definition
True
Term
Term: Cancerous cells form these bunches of cells
Definition
Neoplasms
Term
True/False: K+ ions are about 10x higher in concentration inside than outside the cell
Definition
False, they are about 25x
Term
The membrane of the fluid mosaic model is mainly made of what two components?
Definition
50% mass Phospholipids
50% mass Proteins
Term
Term: Double layer of phospholipids
Definition
Lipid bilayer
Term
Term: Protein embedded in lipid bilayer
Definition
Intregal/transmembrane protein
Term
Term: Phospholipid bilayer with hydrophilic heads and hydrophobic tails
Definition
Amphipathic molecules
Term
What provides stabilization of the phospholipids of the cell membrane?
Definition
Cholesterol
Term
What are the two types of proteins of the cell membrane?
Definition
Integral/Transmembrane
Extrinsic/Peripheral
Term
Term: Protein that does not span cell membrane
Definition
Extrinsic/Peripheral protein
Term
Are carbohydrates hydrophilic or -phobic?
Definition
Hydrophilic
Term
How much of the phospholipid bilayer is made of carbohydrate?
Definition
2-10% mass
Term
What are the main types of carbohydrates found in the cell membrane?
Definition
Glycoproteins
Glycolipids
Term
What is the function of the carbohydrates in the cell membrane?
Definition
Receptors of hormones
Term
Term: Movement through membrane that occurs with concentration gradient, producing less concentrated fluid by diffusion
Definition
Passive transport
Term
What are the two major types of movement through membranes?
Definition
Passive transport
Active transport
Term
Term: Type of movement against concentration gradient that forms a more concentrated fluid and requires energy and a protein
Definition
Active transport
Term
Term: Movement from 1 area to a second by random thermal motion
Definition
Diffusion
Term
Term: From higher area to lower concentration
Definition
Net flux
Term
Term: Concentrations become equal after movement across a membrane
Definition
Differential equilibrium
Term
What is the magnitude of net flux equal to?
Definition
J = PA(Co-Ci)

J: Magnitude of net flux
P: Permeability constant
A: Surface area of membrane
Co-Ci: Concentration difference across membrane
Term
Term: Movement through membrane of a substance without energy or protein
Definition
Simple diffusion
Term
What does a 'mediated' transport system mean?
Definition
It requires protein
Term
Term: Movement across membrane in which a substance requires a protein but no energy
Definition
Facilitated transport
Term
What is the main barrier to most solutes?
Definition
Simple diffusion; too difficult to get through phospholipid bilayer
Term
Give an example of some lipid insoluble substances
Definition
Glucose
Amino acids
Term
Describe facilitated diffusion vs. simple diffusion
Definition
Much faster transport of solutes
Saturable process (limit to rate)
Highly specific (protein carrier)
Can be blocked by competitive inhibitor
Term
Term: Related competitors compete for the same binding sites, slowing the transport of desired molecules
Definition
Competitive Inhibition
Term
Active transport will continue as long as what?
Definition
Energy and solute are available
Term
What is the function of the Sodium/Potassium-ATPase pump?
Definition
Energy drives the transport of both sodium (pumped out) and potassium (pumped in) against gradients to maintain the high potassium, low sodium concentration in cytoplasm
Term
For every ATP split by the Sodium/Potassium-ATPase pump, how many sodium ions and potassium ions are moved?
Definition
3 sodium in
2 potassium out
Term
How are cells differentiated?
Definition
Producing different proteins, and not others
Term
What is the function of pancreatic cells?
Definition
Synthesize abundant insulin, but no hemoglobin
Term
Term: Selective use of DNA
Definition
Genetic expression
Term
Where does transcription occur?
Definition
Nucleus
Term
What are the pairs of each base?
ATCG
Definition
A-U
T-A
C-G
Term
How many different codes do the codons make up?
Definition
61 amino acids
3 stop codons
Term
True/False: The genetic code is universal
Definition
True
Term
True/False: In semi-conservative replication, 1 strand of DNA serves as the template
Definition
True
Term
What is the function of DNA polymerase?
Definition
Enzyme that catalizes DNA replication
Term
How is RNA edited after transcription?
Definition
Pre-RNA exons are cut and spliced, introns are removed, a 5' cap is added as well as a poly-A tail
Term
What is the function of tRNA?
Definition
Brings individual amino acid to ribosome, lock in place, peptide bond formed between adjacent amino acids
Term
What are the three steps in protein synthesis?
Definition
Initiation
Elongation
Termination
Term
Describe the steps in initiation
Definition
Synthesis starts with AUG start codon near 5' cap, the small subunit binds to the large subunit and the first tRNA occupies the P-site, the A-site if left vacant
Term
Describe the steps in elongation
Definition
Second tRNA with amino acid enters A-site, the anticodon plugs in, a peptide bond is formed between 2 adjacent amino acids, first tRNA leaves and second moves into P site from A site, third tRNA arrives into A-site, this process is repeated
Term
Describe the steps in termination
Definition
When ribosome reaches stop codon, polypeptide breaks off last tRNA, tRNA is released, the A-site is occupied by release factor that triggers breakup of small and large subunits
Term
Term: Several ribosomes on same mRNA, each makes 1 molecule of same polypeptide
Definition
Polysome
Term
What controls protein synthesis?
Definition
Transcription; genes are turned on and off and permit or restrict RNA polymerase from attaching to promotor of DNA segment
Term
Term: Another name for substrate
Definition
Ligand
Term
Term: Ligand + enzyme
Definition
E-S complex, where the substrate is modified and the enzyme acts as a catalyst
Term
True/False: Enzyme binding sites can become saturated due to high S concentration
Definition
True
Term
Term: Binding of modulator molecule to regulatory site on allosteric protein changes shape of functional binding site, so changes bind characteristics and activity of protein
Definition
Allosteric modulation
Term
What regulates the activity of allosteric proteins?
Definition
Changing concentrations of modulator molecules
Term
How do catalysts affect chemical reactions?
Definition
Speed up reactions by lowering activation energy
Term
Many enzymes require small amount of ____ to bind to enzyme at site other than active site
Definition
Cofactor
Term
What are cofactors?
Definition
Trace metals or coenzymes (organic cofactors)
Term
Which vitamins provide the body with NADH and FADH2?
Definition
NADH - Niacin
FADH2 - Riboflavin
Term
How are EMRs increased by?
Definition
Warmer temperatures in range 0-40 degrees Celsius
Increased substrate concentration and enzyme concentration
Increased enzyme affinity for S by allosteric modulation
Term
What is the rate of product formation controlled by in pathways?
Definition
Allosteric modulation of enzyme control of rate-limiting step
Term
Term: End product energy that binds to an enzyme and inhibits it
Definition
End Product Inhibition
Term
ADP + __ = ATP
Definition
Pi
Term
Term: Energy currency of cell
Definition
ATP
Term
What is the formula for hydrolysis of ATP?
Definition
ATP -> ADP + Pi + 7kcal
Term
What does the energy from catabolism of fuel molecules form?
Definition
Heat and ATP
Term
What are three cell processes that require a lot of ATP?
Definition
Protein synthesis
Active transport
Muscle contraction
Term
What are the three linked metabolic pathways used to form food into ATP?
Definition
Glycolysis
Krebs Cycle
Oxidative Phosphorilation
Term
Is glycolysis anaerobic or aerobic?
Definition
Anaerobic
Term
True/False: Glycolysis can break down carbs, fats, and proteins
Definition
False, only can break down carbs
Term
True/False: Krebs and oxidative phosphorilation can break down carbohydrates, fats, and proteins
Definition
True
Term
Glycolysis is a __ step path
Definition
10
Term
Which steps of glycolysis use ATP to form Fructose 1,6 diphosphate?
Definition
Steps 1 and 3
Term
At what step of glycolysis does C6 split from P-C6-P -> 2C3
Definition
Step 4
Term
At which step of glycolysis does an isomerization occur?
Definition
Step 5
Term
In what step of Glycolysis is NADH formed?
Definition
Step 6
Term
Term: NADH -> NAD+
Definition
Oxidation
Term
Term: NAD+ -> NADH
Definition
Reduction
Term
Which steps of glycolysis form ATP in substrate level phosphorilation?
Definition
Steps 7 and 10
Term
When exercising muscles with low oxygen, which pathway yields 3% of free energy available from glucose?
Definition
Glycolysis
Term
1 molecule of glucose yields __ molecules of pyruvate
Definition
2
Term
In total, Glycolysis yields how many NADH and ATP?
Definition
2NADH
4ATP
Term
When pyruvate enters the mitochondria and loses CO2, it becomes what?
Definition
Acetyl
Term
What happens during the linking step?
Definition
NADH+ -> NADH; C3 -> C2 and CO2 is given off

Acetyl joins coenzyme A and is linked with C4
Term
Oxaloacetate + Acetyl-CoA forms...?
Definition
Citrate + energy
Term
Krebs regenerates CoA and gives off how many CO2?
Definition
2
Term
Oxidations of C2 coupled with reduction of electron-carrying coenzymes NAD+ and FAH to form what?
Definition
High energy reduced forms NADH and FADH2
Term
How many NADH and FADH2 are formed in the Krebs Cycle?
Definition
3 NADH
1 FADH2
Term
What are the products of ADP + GTP ->?
Definition
ATP + GDP
Term
How many GTPs are formed during the Krebs cycle?
Definition
1
Term
___ is essential for oxidation of NADH and FADH2
Definition
Oxygen
Term
Which steps of the Krebs cycle form NADH?
Definition
At C6 -> C5
At C5 -> C4
Forming oxaloacetate
Term
Term: Breaking down large objects
Definition
Catabolism
Term
Term: Building up large objects
Definition
Anabolism
Term
Where in the Krebs Cycle is GTP formed?
Definition
Between the first two C4s
Term
Give a summary of the linking step
Definition
Pyruvic acid + CoA + NAD+ -> C2-CoA + CO2 + NADH
Term
Give a summary of the Krebs Cycle
Definition
2C2-CoA + 2C4 + 2GDP + 6NAD+ + 2FAD -> 2C6 + 2CoA + 2GTP + 6NADH + 2FADH2
Term
What is the harvest of link and krebs?
Definition
8 NADH
2 FADH2
2 GTP
Term
Each electron carrier is slightly ___ energy vs. previous
Definition
Lower
Term
What is the final electron acceptor?
Definition
Oxygen
Term
Explain the chemiosmotic theory
Definition
Protons are pumped out of matrix as electrons are passed down the ETC. As protons go through the ATP synthetase complex, energy is used to form ATP
Term
The majority of ATP for cells is made by ___ ___
Definition
Oxidative Phosphorilation
Term
What is the difference between fats and other sources of energy?
Definition
It is a rich energy source, and gives off 9kcal per gram while carbs and proteins only give off 4kcals per gram
Term
Describe fat catabolism
Definition
1 fat -> 1 glycerol + 3 fatty acids
Term
Fatty acids have carbon skeletons of what?
Definition
C14 to C22
Term
Describe the metabolism of proteins
Definition
Proteins -> amino acids, remove NH2, deamination forms NH3 which is toxic, and is converted into urea and excreted
Term
After the removal of NH2, what happens to the carbons?
Definition
They are burned as fuel
Term
Acetyl is a precursor in biosynthesis of amino acids, monosaccharides and fatty acids which makes it what?
Definition
The point where catabolic and anabolic pathways intersect
Term
Messengers are amplified by ___
Definition
Cyclic AMP
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