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Final Exam
Final
58
Biology
Undergraduate 2
05/05/2013

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Term
Carbohydrates
Definition
glycosidic bonds, ketones, aldehyde, hydrogen bonds, alcohol functional group,

d group: oh on one side
l group: oh on two sides

ring: forms after 5
Term
inorganic phosphates
Definition
good buffer,
Term
high concentrations in cells
Definition
mg, k, po4
Term
low concentrations in cells
Definition
ca, na, oh, fe
Term
relationship with calcium and sodium and magnesium and potassium ions
Definition
calcium and sodium go out
mg and k go inside the cell
Term
chemical formula
Definition
the c6h1206 pa
Term
mRNA
Definition
information molecule, modified part of the RNA
goes through ribosomes

prokary: happens at same time, same place

eukaryotes: must be processed and translocated from nucleous
Term
how does RNA become mRNA
Definition
the sequence at the end (polyadenylation sequence)

add modified g cap on 5
add poly a tail on 3

protects from modification

also have introns removed with spliceosomes
Term
Splicesomes
Definition
snRNA and snRNPs

both go and from splicesomes
come together to get ride of introns
Term
what happens to introns
Definition
spliced out and made into little nucleotides and then used for RNA
Term
Introns in prokaryotes
Definition
introns themselves are spliced out
Term
ribosomes
Definition
large subunit and small subunit
made of proteins and RNA
Term
tRNA
Definition
have a secondary and tertiary sturcture
carry anticodons and go into the ribosome units

covalently bond to amino acids
noncovalent on ribosomes
hydrogen on anticodon
Term
how does tRNA become charged?
Definition
charged when amino acid comes on
synthetase enzymes bond with amino acids bond with tRNA
Term
what is EPA for ribosomes?
Definition
a > binding site
p> carries the charged part
E> exit strategy; once charge is gone
Term
how is the polypeptide chain released
Definition
stop codon comes in
releases the tRNA, and the mRNA, and the subunits
Term
what requires high energy bonds in making a polypeptide chain?
Definition
1. 2covalent bonding of amino acid
2. 1 energy bond; inserting in a site
3. 1 energy: transclocating

4 energy bonds total
gdp and ADP instead
Term
k eq value greater than 1
Definition
forward direction
exergonic or spontaneous
change in g value less than 0
Term
k eq value less than 1
Definition
reverse direction
endergonic
need energy
change in g greater than 0
Term
liposome
Definition
hollow sphere with phospholipid bilayer

never flip because of hydrophobic bonding
Term
what changes the fluidity of liposomes
Definition
increase in fluidity
higher temperature
shorter chain lengths
double bonds
decreases fluidity
nature of polar heads
Term
facilitated diffusion
Definition
no energy used
moves in either direction
Term
secondary messengers
Definition
cyclic amp: change its shape in response to external signal
Term
which bonds are the strongest?
Definition
covalent: 1 A, 100-500 kj
polar: several; na
hydrogen: 3A; 10-30 kj
Term
proteins
Definition
n terminal - c terminal
central carbon, amino acid, r, and h, carboxylic acid

seconday: alpha, beta> hydrogen
Term
lipids
Definition
fatty acids, triglycerides, sterols, etc.
Term
plasmids vs plastids
Definition
pladmids: circular DNA in prokaryotes

plastids: cholorplasts in plants
Term
cytoskeleton
Definition
eukaryotes

microfilaments, microtubules, intermediate filaments
Term
microfilaments
Definition
fine, thread like
actin
associated with mysoin
muscle contraction
Term
microtubules
Definition
tubules
tubilin with alpha and beta
determine cell shape

in centrioles, cilia, basal bodies

NOT IN BACTERIAL FLAGELLA
form spindle fibers for mitosis
inside flagella and cilla
Term
intermediate filaments
Definition
provide strength

fibrous proteins
Term
glycolysis
Definition
reactants: 1 glucose
products: 2 pyruvate, 2 atp, 2 nadh
Term
pyruvate to acetyl coa (phospohrylation)
Definition
pyruvate to acetyl coa

reactants: 2 pyruvate
products: 2 acetylc coa, 2 nadh
Term
krebs cycle
Definition
reactants: 2 acetyl coa
products: 6 nadh, 2 fadh2, 2 atp
Term
electron transport chain
Definition
reactants: 10 nadh, 2 fadh2
products: electrochemical proton gradient across inner mitochondiral memrbane
Term
chemiosmosis
Definition
reactants: 34 ADP and 34 P
products: 34 to 38 ATp

more ATP with prok because mitochondira needs energy to move substnaces
Term
non cyclic
Definition
light rxns
non cyclic is when both psI/II work
products: 1 oxygen, 2 nadh, 2 atp
Term
cyclic
Definition
just when psI is used
1 atp is used

environmental conditions
Term
aldehyde
Definition
c double bond o, h
Term
alcohol
Definition
c, oh, h, h
Term
methyl
Definition
c, 3 h's
Term
carboxyic acid
Definition
c, double bond 0, oh
Term
calvin cycles
Definition
true reactant: c02
other reactants: atp and nadph from light reactains

product: 1 gsp, to make glucose> needs 2 GTP
Term
heterochromatin
Definition
tightly packed chromosomes
Term
euchromatin
Definition
loosley packed chormosomes
better becuase acetyl can come in
Term
proximal control elemenst
Definition
control the rate of transciption
Term
bacteriaphage
Definition
lytic cycle
virus that attacks prokaryotic cells
Term
lytic cycle
Definition
enduced
make the parts
then lyse the cell
Term
lysogenic cycle
Definition
entered, dna becomes part of it
when dna is together becomes a prophage
Term
Temperate phage
Definition
bacterial virus that incoporates dna into host dna
Term
virulent phage
Definition
does not undergo lysogeny (dna integration)

immediate lyses the cell
Term
rna viruses *eukaryotes*
Definition
circular RNA
needs rna dependent rna polymerase
budding vrisues
Term
adneovirus
Definition
membrane attaches to the plasma memebrane

non enveloped virus
Term
HIV reporductive cycle
Definition
reverse transciptase> converts rna to dna

provirus: new dna comes into host cell and becomes provirsus

proviurs makes new hiv units

budding: hiv leaves
Term
retroviruses
Definition
rna viruses that use rna fro dna synthesis
Term
WHAT is not typical of a phospolipids
Definition
no steroids

has glyceral, fatty acid, and phosphodiester bond
Term
final product of ethanolic fermnatation is
Definition
co2, ethanol alchols
Term
what kind of molecule is camp
Definition
signal transduction molecule
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