Cell and molecular biology Flashcards
What is a covalent bond
a bond where atoms share elections with similar electronegativity
What are the types of covalent bonds?
- polar unequal sharing with 2 atoms of different negativities
- non polar equal sharing with similar electric negativities
Hydrogen bonds occur between what elements
H with NOF
What is an ionic bond
one electron transfers to another atom of different electro negativities
water has a high or low heat capacity?
high because it takes a lot of energy for it to change the temperature
cohesion is _____ & is due to
why water is attracted to like substances & is due to hydrogen bonds
adhesion is
why water is attracted to unlike substances and is due to capillary action
Draw hydroxyl
Draw an amino
Draw a phosphate
Draw a carboxyl
Draw two carbonyls
what distinguishes alpha and beta monosacharided
alpha is down and beta is up
what keeps two sugar molecules together in disacharides
glycosidic links
polysacharides bond are formed by which kind of reaction? and broken by what reaction?
formed by dehydration, broken by hydrolysis
what are the three types of disacharided
- Sucrose (fructose + glucose)
- Lactose (galactose + glucose)
- Maltose (glucose + glucose)
What is used for plant energy storage ? (Starch, Glycogen, Cellulose, Chitin) What is this a polymer of?
startch
What is used for animal energy storage ? (Starch, Glycogen, Cellulose, Chitin) What is this a polymer of?
glycogen
What is used for the structure of cell wall? (Starch, Glycogen, Cellulose, Chitin) What is this a polymer of?
cellulose
What is used for the structure of fugus? (Starch, Glycogen, Cellulose, Chitin) What is this a polymer of?
chitin
What is used for the structure of insect exoskeleton? (Starch, Glycogen, Cellulose, Chitin) What is this a polymer of?
chitin
Chitin is similar to what complex cobohydrate? The difference us that it has what?
Chitin is similar to ____cellulose____ except it has __a nitrogen group (n-acetylcglucosamine)
What makes a tri glyceride
glycerol back bone and 3 fatty acid chains
difference between saturated and unsaturated fat
- saturated ( they have no double bond and stack causing plaque so bad for your health cause)
- unsaturated (they have a double bond don’t stack so good for your health)
what is amphipathic
it has a hydrophillic side and a hydrophobic side
A phospholipid is comprised of what
a glycerol back bone with a phosphate group attached to 2 fatty acid. A hydrophilic head and hydrophobic tail
hormones and cholesterol are both
steriods
steroids have what kind of structure( rings)
has 4 total ( 3 6-sided ring and 1 5-sided ring)
what makes the color of plants and animals
carotenoids
what is a carotenoid
it is a derivitave of lipid, made of fatty acid chain with 5/6 sided ring at each end. gives the color of plants and animals
what are porphyrins
it is made of 4 pyryol rings that complex with metals… like hem with iron or chlorophyll with Mg
brown vs white adipose cells
white have thin layer of cytoplasm around it and usually made of triglyceride
brown is made with thick layer of cytoplasm and lots of cytoplasm around it
what cell is made of lots of cytoplasm around it ……. what about a lot of triglyceride?
what cell is made of lots of cytoplasm.around it …… brown
a lot of triglyceride? brown
Glycolipid has a ____ group while phospholid has a ___ group
glycolipd has a carbohydrate instead of a phosphate group
what do lipoproteins do
they transport lipids since they are insoluble
how does increasing cholesterol affect cell membrane
increase fluidity or restricts movement
name the three important parts of an amino acid
amino group, alphacarbon with R group, carboxyl group
what is casein
protein in milk
what is oval bumin
protein in eggs
what is zein
protein in corn
enzymes (do/do not)change spontaneity
do not
what is amylase
it is a enzyme that breaks glycosidc bonds in startch
what is an apoenzyme
an enzyme with no cofactor
what is a holoenyme
an enzyme with a cofactor
what is a co enzyme
when an enzyme has an organic cofactor
what is a prosthetic group
when an enzyme is covalently bonded to cofactor
which is a vitamin ( apoenzyme, holoenzyme, co-enzyme, prosthetic group)
co enzyme
what is the difference between simple and conjugated protein classification
simple is made of only amino acids (protein)
What is albumin? (simple or conjugated protein)
simple; functional protein that transports or acts as an enzyme
what is globulins? (simple or conjugated protein?)
simple; functional protein that transports or acts as an enzyme
what is scleroprotein? (simple or conjugated protein?)
simple; structural protein
collagen is an example of (albumin, globulin, scleroprotein)
scleoprotein
what is a lipo protein (simple or conjugated protein?)
conjugated; lipid + protein
what is a mucoprotein (simple or conjugated protein?)
conjucated; carbohydrate + protein
`what is a chromoprotein(simple or conjugated protein?)
conjugated; protein + pigment
what is a metalloproetin(simple or conjugated protein?)
conjugated; protein + metal ion
what is a nucleoprotein(simple or conjugated protein?)
conjugated; histone/ protoamine + nucleic acid
What is the bond in between amino acids
Peptide bond
what bonding is in secondary stucture of proteins and what is it between
Hydrogen bond between amino and and carboxyl group
what bonding is in tertiary structure of protein
- non covalent: Hydrogen bonding Ionic bonding, vanderwall
2. Disulfide bond between cysteins
1,2,3,4 — What protein stucture is first disulfide bonds found
3
1,2,3,4 — What protein stucture are alpha or beta sheets found
2
1,2,3,4 — What protein stucturedo R groups go (towards/away) from eachother
3 go away
1,2,3,4 — What protein stucture contains more than one amino acid chain
4
What are globular proteins, what structure do they have
they are tertiery structured proteins that basiclly do everything functional like storage enzyme etc
fibrous structural proteins are usually (1,2,3,4) structure, they are (water soluble/not water soluble) and made of ______-
fibrous structural proteins are usually 2 structure, they are not and made of long polymers
globular structural proteins are usually (1,2,3,4) structure, they are (water soluble/not water soluble)
globular structural proteins are usually 3 structure, they are water soluble
difference between denatureing and digestion of proteins
denaturing puts the protein in its primary state, digestion elimates protein structure
draw nucleoside vs nucleotide
list pyrimidines and how many rings do they have
C U T 1 ring
list purines and how many rings do they have
AG 2 rings
RNA vs DNA for sugar
dna has deoxyribose and rna has a ribose sugar
enzymes are what kind of proteins?
globulare
what does catalysts do to activation energy
it reduces it
what are cofactor
non protein assist enzymes
inorganic cofactors are usually while organic cofactors are
Fe or Mg metal ions, vitamins
what is a competitive inhibitor. what does it do to Km or Vmax
when a molecule that mimics substrate competes for active site, it lowers Km
what is a non competitive inhibitor/activator. what does it do to Km or Vmax
When an inhibitor/activator attatched to allosteric site, it lowers vmax
what is a uncompetitve inhibitor bind to
it binds to enzyme substrate complex