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Enriched Biology Semester 1 Final
Enriched Biology Semester 1 Final
123
Biology
11th Grade
01/15/2013

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Term
properties of water
Definition

Bonds to others (adhesion)

Bonds to itself (cohesion)

Condusive to temperature moderation

good solvent

Term
monomers
Definition
building blocks of polymers
Term
polymer
Definition

made up of monomers

makes up macromolecules

Term
macromolecules
Definition
large polymers
Term
condensation reaction
Definition

reaction that links monomers to create polymers

water is released as a bi-product

Term
hydrolysis
Definition

breaking down of poymers into monomers

 

Term
ATP
Definition

Aadenosine triphosphate

energy currency in cells

Term
carbohydrates
Definition

organic compounds composed of C, H, and O

ratio of H:O 2:1

monosaccharides, disaccharides, polysaccharides

type of macromolecule

Term
monosaccharide
Definition

simple sugar

e.g. glucose, fructose, and galactose

 

Term
isomers
Definition

compounds with a single chemical formula

with different forms

Term
disaccharide
Definition

formed from monosaccharides through condensation

e.g. table sugar

Term
polysaccharide
Definition

complex carbohydrate

3 or more monosaccharides combined

Term
glycogen
Definition
stored form of energy in animals
Term
starch
Definition
stored form of energy in plants
Term
cellulose
Definition
makes up rigidity in plants
Term
proteins
Definition

organic compounds composed of C, H, O, and N

 type of macromelocule

Term
amino acids
Definition

20 of these

contain an "R" group 

10 are essential to the body

Term
peptide bond
Definition

bond between amino acids

type of covalent bond

Term
enzyme
Definition

catalysts for reactions

contain a substrate and active site

fail when pH changes or temperature changes

Term
lipids
Definition

a type of macromolecule

nonpolar (don't dissolve in water)

store energy very well

 

Term
fatty acids
Definition

unbranched carbon chains

carboxyl group on one end (COOH)

carboxyl end is attracted to water

 

Term
hydrophilic
Definition
water loving
Term
hydrophobic
Definition
water fearing
Term
saturated fatty acids
Definition
all carbon atoms have "H" attached to them
Term
nucleic acids
Definition
type of macromolecule
stores hereditary information
Term
nucleotides
Definition
monomers for nucleic acids
Term
competitive inhibitors
Definition
limit the effects and opportunity for enzymes
competes with other molecules to bind to enzymes
Term
compound microscope
Definition
microscope used to see things not available to the naked eye
Term
stereomicroscope
Definition
microscope used to see things naked eye can see in greater detail
Term
microscope magnification
Definition
eyepiece magnifies 10x
objective lenses magnify 4x, 10x, 40x
Term
resolution
Definition
ability of a microscope to distinguish two objects as seperate
Term
field of view
Definition
everything that can be seen through a microscope
Term
depth of field
Definition
portion of field that appears sharp
Term
prokaryotic cells
Definition
e.g. bacteria
Term
hypotonic solution
Definition
net h2o movement is into the cell, cell gets bigger
Term
hypertonic solution
Definition
net h2o movement is out of cell, cell shrinks
Term
isotonic solution
Definition
net h2o movement is nothing
Term
turgor pressure
Definition
the pressure that water exerts against the cell wall
Term
plasmolysis
Definition
loss of pressure when cell shrinks away from cell wall
Term
cytolysis
Definition
animal cells burst open due to water diffusing into the cell
Term
concentration gradient
Definition
difference in concentration across a space (movement is high to low concentration)
Term
passive transport
Definition
diffusion, osmosis, facilitated diffusion
movement of molecules across the membrane that doesn't use energy
Term
diffusion
Definition
net movement of molecules
Term
osmosis
Definition
diffusion of water
Term
facilitated diffusion
Definition
diffusion where large molecules use a membrane carrier protein to cross the membrane
Term
vesicular transport
Definition
movement of large amounts of material using a vesicle
Term
endocystosis
Definition
moves substances into a cell
Term
exocytosis
Definition
moves substance out of a cell
Term
active transport
Definition
transport of a substance agains the concentration gradient using energy and a membrane protein
Term
photosynthesis
Definition
how plants make energy
Term
cellular respiration
Definition
cellular "breathing"
Term
1st law of thermodynamics
Definition
energy can't be created or destroyed, can only change forms
Term
2nd law of thermodynamics
Definition
entropy of the universe always increases
Term
entropy
Definition
measure of disorder/randomness
Term
phosphocreatine
Definition
enzyme that adds phosphate directly onto ADP to make ATP
used for quick energy
anaerobic
stored in muscles
Term
glycolysis
Definition
partial breakdown of glucose by removing hydrogens
used for short term energy production
anaerobic
occurs in cytoplasm
Term
fermentation
Definition
anaerobic
converts pyruvate into 3 carbon lactic acid
Term
alcoholic fermentation
Definition
plant cells and yeast convert pyruvic acid into ethyl alcohol
anaerobic
Term
transition reaction
Definition
occurs in matrix of the mitochondria
pyruvate combines with coenzyme A to produce acetyl CoA
2 NAD is reduced to NAPH+H
2 CO2 released (1 from each pyruvate)
Term
cellular respiration
Definition
creates 36 to 38 ATP
used for long term energy production
aerobic
occurs in mitochondrial matrix
can use glucose, fats, or proteins as fuel
Term
krebs cycle (citric acid cycle)
Definition
products (per 2 cycles): 6 NADH, 2 FADH2, 4 CO2, 2 ATP
Term
electron transport chain
Definition
creates the most ATP during cellular respiration
each NAPH produces 2 ATP
each FADH2 produces 2 ATP
Term
nuclear envelope
Definition
double membrane surrounding nucleus
Term
nuclear pores
Definition
small holes in the membrane
Term
histone proteins
Definition
DNA wraps around these to help coil chromatin
Term
chromatin
Definition
long, thin, uncoiled DNA
Term
chromosomes
Definition
DNA coiled, thick (stored this way for replication)
Term
prophase 1
Definition
synapsis- homologous chromosomes pair up
tetrads- each pair of homologous chromosomes
crossing over- regions of DNA are exchanged
Term
metaphase 1
Definition
tetrads line up in cell's center
Term
anaphase 1
Definition
homologous chromosomes will seperate and move to opposite poles
Term
telophase 1
Definition
one of each pair of homologous chromosomes is at each pole
cytokinesis occurs
Term
meiosis 2
Definition
same as meiosis 1, but splits at centromere
Term
genetics
Definition
study of heredity
Term
heredity
Definition
passing of traits from parents to offspring
Term
traits
Definition
any characteristic that can be passed from parent to offspring (plant height, seed texture, seed color)
Term
alleles
Definition
two forms of a gene represented by letters
Term
dominant
Definition
stronger of two genes expressed in the hybrid; represented by capital letter
Term
recessive
Definition
gene that gets covered up by the dominant trait; represented by a lowercase letter
Term
genotype
Definition
gene combination for a trait
Term
phenotype
Definition
the physical feature resulting from a genotype
Term
law of segregation
Definition
a pair of factors is segregated, or separated during meiosis
Term
law of independent assortment
Definition
alleles for different traits are distributed to gametes independently of one another
Term
dihybrid cross
Definition
involves 2 pairs of contrasting traits
Term
incomplete dominance
Definition
neither allele of the pair is completely dominant
they combine for a new trait
e.g. mix of colors (red + white = pink)
Term
codominance
Definition
both alleles are expressed equally; both phenotypes are produced
Term
sex-linked traits
Definition
genes that reside on the x chromosome
(females XX males XY)
Term
polygenic traits
Definition
traits determined by multiple genes
Term
product rule
Definition
probability that two events will both happen "and rule"
product of their individual probabilities
Term
sum rule
Definition
if an event can happen in one or two ways
sum of their individual probabilities
Term
homologous chromosomes
Definition
two chromosomes that carry the same information, but are not identical
Term
autosomes
Definition
non-sex chromosomes
Term
spindle fibers
Definition
microtubules that move chromosomes and attach to centromere
Term
g1
Definition
part of the interphase: "gap" between cell division, cell grows
Term
s
Definition
part of the interphase: "synthesis"; DNA is copied
Term
g2
Definition
part of the interphase: "gap" cells prepare for division; centrioles replicate, spindles form
Term
g0
Definition
part of the interphase: "gap" cells are NOT undergoing any preparation for cell division
Term
prophase
Definition
phase of mitosis in which the nuclear membrane and nucleolus disappear, chromatin coils to form visible chromosomes, spindle fibers form between centrioles which move to opposite ends of cell
Term
metaphase
Definition
phase of mitosis in which the chromosomes meet in the middle; each chromatid attached to separate spindle fibers
Term
anaphase
Definition
phase of mitosis in which the centromeres split and each sister chromatid is pulled apart to opposite polls of the cell
Term
telophase
Definition
phase of mitosis in which the cell forms two new daughter cells, nucleus and nucleoulus reappear, chromosomes begin to uncoil
Term
Robert Hooke
Definition
first identified cells using a microscope
Term
Anton von Leeuwenhoek
Definition
first person to identify living cells
Term
plasma membrane
Definition
regulates which substances enter or exit cell
Term
cytoplasm
Definition
cell interior
Term
organelles
Definition
bodies within the cytoplasm
Term
cytosol
Definition
fluid matrix of a cell
Term
cytoskeleton
Definition
long protein chains that provide support and tracks for moving substances through the cell
Term
microtubules
Definition
made of proteins-provide support, cell motility, found in spindle apparatus, "hollow"
Term
microfilaments
Definition
made of actin, cell motility
Term
intermediate filaments
Definition
provide support and maintain shape of the cell
Term
nucleus
Definition
control center of the cell
Term
nucleolus
Definition
site of ribosome production
Term
ribosomes
Definition
assemble amino acids into proteins
Term
endoplasmic reticulum
Definition
transport system of the cell
Term
rough ER
Definition
contains ribosomes
Term
smooth ER
Definition
makes fats, breaks down toxins, drugs, and toxic byproducts
Term
golgi apparatus
Definition
modifies proteins into vesicles and packages them for the cell
Term
lysosomes
Definition
breaks down materials and worn out cell parts, digestive cell
Term
vesicle
Definition
transports materials out of the cell, can ride on cytoskeleton
Term
mitochondria
Definition
powerhouse of the cell, where energy is produced, loaded into muscles
Term
vacuole
Definition
stores material, mostly water
Term
cell wall
Definition
supports the cell shape, protects
Term
chloroplasts
Definition
produce energy by photosynthesis
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