Biology Exam 2
Biological Sciences 1020 with O'hara at University of Missouri- Columbia
About this deck
By: joe morrison
Created: 2011-03-24
Size: 32 flashcards
Views: 16
Created: 2011-03-24
Size: 32 flashcards
Views: 16
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Absorption
Light energy that is retained by pigment molecules
Absorption Spectrum
A graph showing the amount of light absorbed by individual pigments at various wavelengths
epidermis
outermost layer of cells in plants, especially in leaves
guard cells
specialized epidermal cells that occur in pairs on leaf surfaces and regulate the opening to the leaf interior
palisade layer
chloroplast bearing cells in the interior that are oriented with their long axes perpendicular to the leaf surface
spongy layer
loosely packed chloroplast bearing cells in the interior of leafs; surronded by air space
stomata
openings of leafs surfaces through which air passes to the interior of the leaf
Alveoli
Tiny air sacs at the ends of bronchioles in the lungs
Bronchi
tubes branching from the trachea and directing air into each lung
bronchioles
tubes from the bronchi that lead to clusters of alceoli
diaphragm
muscle sheet at bottomo of chest cavity; contraction of this muscle draws air into the lungs
ectotherm
organism whose body temperature is determined primarily by environmental temperature
endosperm
food source for developing plant embryo
epiglottis
flap at the top of trachea that prevents food from entering or blacking air pathway
spiracle
opening in arthropod body wall through which air enters tracheae
trachea
air tube leading from back of mouth down into chest cavity; the windpipe
tracheae
tiny tubes in insect body that deliver oxygen directly to metabolizing tissues
Anaphase
phase of cell division which chormatids or homologous chromosomes separate and move to opposite ends of the cell
Cell plate
partition that forms during cytokinesis in plant cells to produce separate daughter cells
cytokinesis
division of the cytoplasm following mitosis or meiosis
diploid
condition in which the cell has two sets of chromosomes
gametes
mature sex cells
haploid
condition in which a cell only has one set of chromosomes
interphase
interval between cell divisions in the cell cycle
karyotype
chromosome complement of a cell
meiosis
nuclear division in which the number of chromosomes is reduced by one-half; cell division which produces haploid gametes
metaphase
the phase of cell division when the chromosomal material is situated in the middle of the cell
mitosis
nuclear division which produces daughter cells that are identical to the original cell
oocyte
cell which has undergone chromosome replication and is undergoing oogenesis
oogenesis
meiosis which produces egg cells
heterozygous
a genotype consisting of two different alleles; not true breeding
homozygous
a genotype consisting of two identical alleles; true breeding
About this deck
By: joe morrison
Created: 2011-03-24
Size: 32 flashcards
Views: 16
Created: 2011-03-24
Size: 32 flashcards
Views: 16
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
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