Chapter 4 - Metabolism Flashcards
Metabolism
All the chemical reactions to use raw materials in your body
Catabolism
Break down
Anabolism
Building up
Carbohydrates
Sugars and starches
C O H - elements in carbs
Monosaccharides
Simplest form
- Glucose
- Fructose
- Galactose
- Deoxyribed
- Ribose
Glucose
Fructose
Galactose
Hexagon
6 carbon sugars
Deoxyribes
Ribose
Pentagon
5 carbon sugar
Glucose
Most important energy source
Disaccharides
Double sugar
Sucrose
Maltose
Lactose
Sucrose
Glucose and fructose
Maltose
Glucose and glucose
Lactose
Glucose and Galactose
Dehydration
Joining molecules together
You lose an H2O molecule
Hydrolysis
To separate disaccharides you add water
Polysaccharides
Multiple glucose (more than 2)
Glycogen
Cellulose
Glycogen
Liver and muscles
Animal source
Cellulose
Fiber
Plant cell-wall
Uses of glucose
Burned as fuel for energy (ATP)
Store for later use as glycogen
Excess sugar converted to lipids that can be stored, can be used later..
Catabolism
Breakdown glucose
Anaerobic
Without oxygen glycolysis
-> 2 ATP -> lactic acidosis
Aerobic
With oxygen glucose and oxygen
-> 32-38 ATP -> CO2
Lipids
Fats and oils
CHO (Fewer oxygen)
Fats
Solid at room temperature
Oils
Liquid at room temperature
Triglycerides
Glycerol and 3 fatty acid tails
Saturated
Maximum # of Hydrogens
-Solid (typically)
Unsaturated
Double carbon bonds
-liquid (typically)
Phospholipid
Cell membrane
Steroid
Cholesterol
HDL - High Density Lipoprotein
LDL - Low Density Lipoprotein
Cholesterols
Most common steroid
Made in liver (from fatty acids) “can be used to make other steroids”
HDL
High Density Lipoprotein
“Good cholesterol” helps remove other cholesterol from your blood
More protein than lipid
LDL
Low Density Lipoprotein
“Bad cholesterol” account for 60-70 % of cholesterol n blood
Proteins
Most abundant organic molecule in your body
- muscle
- gates in cell membrane
- hemoglobin
- enzymes
- antibodies
Amino Acids
Building blocks of all proteins
Peptide bonds
Lose a H2O molecule
-polypeptide bonds
•Straight
•bend
•twist
•shape depends on amino acids coded by DNA
(Hydrophilic/Hydrophobic)
Essential Amino Acids
Body can’t produce these
Consume in your diet
Nonessential Amino Acids
Liver makes these
Do not have to consume
Nitrogen
Needs special care
Urea
Liver takes most of nitrogen and converts it into it
Goes to the kidney, then it filters it out and then adds H2O making urine
Ammon (NH3) harmful to body
Nuctecic Acids
Protein synthesis and DNA
DNA
Deoxyribonucleic acid
Blue print for making proteins
A- Adenine \
T- Thymine /
C- Cytosine \
G- Guanine /
RNA
Ribonucleic Acid
A- Adenine \
U- Uracil /
C- Cytosine \
G- Guanine /
Ribose 5 carbon sugar phosphate group single
Steps from DNA to Protein
DNA -> m RNA -> t RNA -> Amid Acid chain begins linking to form polypeptide -> protein begins folding -> Releases (RNA) from ribosomes to repeat
Steps from DNA to Protein
DNA
Master code
Steps from DNA to Protein
m RNA
Messenger RNA, transeriloes DNA (in nucleus)
Travels into cytoplasm and finds a ribosomes
Steps from DNA to Protein
t RNA
Transfer RNA, translate Amino Acid sequence