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Biology 120
Biology for non-majors
102
Biology
Undergraduate 1
10/11/2007

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Term
Grana
Definition
stacks of sacs of photosynthetic membranes.
Term
chlorophyll
Definition
the pigment molecule mostly used in plants for photosynthesis
Term
fermentation
Definition
a metabolic pathway that breaks down carbohydrates without the oxygen
Term
light independent
Definition
the set of reactions of photosynthesis where carbon dioxide is converted to glucose
Term
light dependent
Definition
the set of reactions of photosynthesis where fuel molecules and oxygen is created
Term
sunlight
Definition
must be present to split water in photosynthesis
Term
oxidative phosphorylation
Definition
the process of making ATP in the presence of oxygen
Term
thylakoid
Definition
the actual membrane in the chloroplast where photosynthesis begins
Term
oxygen
Definition
the gas that is produced when water is split in photosynthesis & required in cellular respiration
Term
krebs cycle
Definition
the middle stage of cellular respiration where carbon dioxide is produced
Term
two
Definition
the number of 3 carbon molecules produced at the end of glycolysis
Term
carbon dioxide
Definition
the gas that is used to produce glucose in photosynthesis & is given off in cellular respiration
Term
ATP
Definition
the molecule mostly produced in the electron transport system
Term
glycolysis
Definition
the function of this stage of cellular respiration is to break glucose into smaller units
Term
photosynthesis
Definition
the process of taking light and converting it to chemical energy
Term
visible light
Definition
humans see color in this spectrum
Term
fuel molecules
Definition
some examples include NADPH in photosynthesis, NADH & FADH in cellular respiration
Term
stroma
Definition
fluid in the chloroplast where glucose is made
Term
autotroph
Definition
an organism that can produce its own food
Term
carotenoids
Definition
a pigment molecule found in carrots
Term
heterotroph
Definition
an organism that cannot produce its own food
Term
anaerobic
Definition
a type of reaction that does not require oxygen to generate ATP
Term
mitochondria
Definition
the place in the cell where Krebs cycle and electron transport occurs
Term
electron transport system
Definition
the last stage of cellular respiration
Term
cytoplasm
Definition
the place in the cell where glycolysis occurs
Term
red
Definition
longest wavelength of light
Term
cellular respiration
Definition
the aerobic harvesting of energy from food molecules
Term
violet
Definition
shortest wavelength of light
Term
aerobic
Definition
a type of reaction that requires oxygen to generate ATP
Term
alcoholic
Definition
type of fermentation that occurs when wine or beer is produced
Term
lactic acid
Definition
type of fermentation that occurs in your muscles when oxygen has been depleted
Term
Mendel
Definition
the father of genetics
Term
independent assortment
Definition
Mendel's theory, where genes become sorted independently
Term
karyokinesis
Definition
nuclear division
Term
genetics
Definition
the study of heredity
Term
phenotype
Definition
the physical characteristic that is expressed as a result of the genotype
Term
telophase
Definition
the stage of mitosis when cytokinesis occurs
Term
segregation
Definition
Mendel's theory, in which homologous pairs are separated in meiosis and end up in different gametes
Term
metaphase
Definition
stage of mitosis where the chromosomes line up in the middle of the cell
Term
benign
Definition
a type of tumor that will remain at the site of origin
Term
meiosis
Definition
the division of a cell where 4 geneticly different daughter cells are formed
Term
incomplete dominance
Definition
a type of inheritance where neither member of the allelic pair is dominant and an intermediate phenotype will form
Term
chromatin
Definition
the long, thready DNA material in a cell before chromosomes condense
Term
dihybrid
Definition
a type of cross involving two characteristics
Term
leukemia
Definition
cancer of the blood
Term
malignant
Definition
a type of tumor that is capable of spreading into other tissues
Term
fertilization
Definition
this event occurs when the sperm and the egg unite to produce a diploid cell
Term
punnett square
Definition
a graphic device used to predict genetic ratios
Term
multiple alleles
Definition
a type of inheritance when there are more than two alleles in a population
Term
crossing over
Definition
this event occurs in meiosis and increases the genetic variability
Term
gene
Definition
a specific sequence of nucleotides which contains hereditary information
Term
tumor
Definition
excessive growth that results in a mass of cells
Term
sarcoma
Definition
a type of cancer that originates in tissues that support the body, like muscle or bone
Term
monohybrid
Definition
a type of cross involving one characteristic
Term
homologous
Definition
chromosome pairs with the same centromere position, length, stain patterns etc.
Term
karyotype
Definition
a chart of chromosomes
Term
metastasis
Definition
occurs when cancer cells split off and spread via the blood stream to other parts of the body
Term
interphase
Definition
90% of a cell's life is in this phase and is divided into G1, S, and G2 subphases
Term
nondisjunction
Definition
occurs when chromosomes do not completely separate in meiosis resulting in abnormal chromosome numbers
Term
diploid
Definition
a cell that contains two homologous sets of chromosomes, a 2n cell
Term
DNA synthesis
Definition
the process that occurs in the S phase of interphase
Term
X linked
Definition
a type of inheritance that is associated with recessive alleles on the 23rd pair
Term
centromere
Definition
holds a chromosome together
Term
cytokinesis
Definition
cytoplasmic division
Term
carcinoma
Definition
a type of cancer that originates in body coverings
Term
dominant
Definition
the allele that is fully expressed in the heterozygous condition
Term
klinefelter
Definition
a syndrome involving an additional X at the 23rd pair resulting in XXY
Term
codominance
Definition
a type of inheritance that occurs when the allelic pairs are both dominant and phenotype with have both characteristics
Term
haploid
Definition
a cell that contains a single set of chromosomes, an n cell
Term
cancer
Definition
these cells are not under any control, divide abnormally and may have lethal effects
Term
genotype
Definition
the genes themselves, BB, Bb, or bb
Term
chemotherapy
Definition
a cancer treatment that involves drugs that disrupt cell division
Term
mitosis
Definition
the division of a cell where two identical daughter cells are formed
Term
prophase
Definition
the phase of mitosis where the nuclear membrane disappears, chromosomes are visible and spindles form
Term
recessive
Definition
this allele is usually masked by the dominant allele and only expressed in the homozygous condition
Term
heterozygous
Definition
have two different alleles, Aa
Term
pleiotropy
Definition
a type of inheritance when more than one characteristic is control by 1 gene
Term
anaphase
Definition
stage of mitosis where the chromosomes are pulled apart
Term
polygenic
Definition
a type of inheritance when more than one gene controls the phenotype
Term
allele
Definition
one of two or more genes that produces a specific characteristic such as blood type, eye color and so on.
Term
karyotype
Definition
a chart made from photographs of a person's chromosomes just before cell division
Term
autosomes
Definition
the first 22 pairs of chromosomes
Term
sex chromosomes
Definition
23rd pair, contains the genes that govern the sex of the organism as well as other non-sex traits
Term
autosomal dominant inheritance
Definition
disorder or syndrome expressed when the genotype is homozygous dominant or heterozygous for that condition
Term
Huntington's disease
Definition
degeneration of the nervous system
Term
achondroplasia
Definition
one form of dwarfism
Term
autosomal recessive inheritance
Definition
disorder or syndrome expressed when the genotype is homozygous recessive for that condition
Term
hemophilia
Definition
blood clotting disorder
Term
Down's Syndrome
Definition
Trisomy 21, caused by an extra chromosome at the 21st pair
Term
Turner's Syndrome
Definition
caused by a lack of a chromosome at the 23rd pair
Term
DNA
Definition
double stranded molecule made up of nucleotides
Term
G1
Definition
The cell increases its supply of proteins and organelles and grows in size
Term
S phase
Definition
DNA synthesis (replication) occurs
Term
G2
Definition
the cells continue to prepare for the actual division, increasing the supply of other proteins that are needed in division
Term
order of Mitosis
Definition
Parent cell (interphase), Prophase, Metaphase, Anaphase, and Telophase (two daughter cells)
Term
respiration
Definition
a metabolic pathway that breaks down carbohydrates with the presence of oxygen and forms a lot of ATP
Term
xanthophylls
Definition
yellow, brown, purple, or blue
Term
anthocyanins
Definition
red & purple
Term
carotenoids
Definition
reflects red, yellow, and orange
Term
6CO2+6H2O yields C6H12O6+ 602
Definition
photosynthesis formula
Term
plant characteristics
Definition
eukaryotic, multi-cellular, autotrophic, cell walls contain cellulose
Term
C6H12O6+6O2 yields 6CO2+6H2O+ATP+heat
Definition
Cellular Respiration formula
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