| Terms |
Definitions |
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strat
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layer
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por-
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opening
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septic
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putrification; infection
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branchi-
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having fins
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Isotonic
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Lets cell remail
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thiols
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organic compounds containing sulfhydryls
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autotrophs
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self-feeders; sustain themselves without eating anything derived from other organisms. produce organic molecules from CO2 and other inorganic raw materials from the environment. producers
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Microtubules
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Maintain cell shape, motility, chromosome movement and organelle movement (cytoskeleton)
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Dominant/recessive seed color/shape
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Yellow: Dominant
Green: Recessive
Round: Dominant
Wrinkled: Recessive
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Gastrulation
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Inward folding of the blastula.
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organic chemistry
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the study of carbon compounds
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mesophyll
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green tissue that houses the parenchyma cells that have chloroplasts
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Tetrad
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Formed by synapsis of homologous pairs
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glyceraldehyde-3-phosphate (G3P)
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the carbohydrate produced directly from the Calvin cycle is actually not glucose, but a three carbon sugar named G3P; for the net synthesiss of one molecule of this sugar the cycle must take place three times fixing three molecules of CO2
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limiting factor
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Resource or environmental condition that restricts the abundance and distribution of an organism.
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Vesicle
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small membranous sac; stores and transports substances
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secretion
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process of producing a substance within an organ and discharging it
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F2 generation
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Offspring resulting from interbreeding of the hybrid F1 generation.
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Catabolic Pathway
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Pathway that releases energy by breaking down complex molecules into simpler ones.
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anion
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an ionic species having a negative charge
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ligand
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A molecule that binds specifically to a receptor site of another molecule.
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relative fitness
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the contribution an individual makes to the gene pool of the next generation relataive to the contributions of other individuals
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d
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All of the following statements about a haploid cell in a plant are correct EXCEPT:
a) it may have either an odd or even number of chromosomes
b) It may function as a gamete
c) it may have been formed as the result of a meiotic division
d) it may undergo meiosis to produce gametes
e) it may undergo mitosis
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antibiotics
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A chemical that kills bacteria or inhibits their growth.
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Ti plasmid
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plasmid of a tumor-inducing bacterium that integrates a segment of its DNA (T DNA) into a chromosome of a host plant
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Cell plate
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Vesicles carry cellular materials to center of cell, vesicles fuse with plasma membrane to form daughter cells, occurs during cytokinesis of plant cells
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Atomic nucleus
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Contains protons and neutrons packed together to form a dense core
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translocation
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chromosomal fragment can join to a nonhomologous chromsome
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Class Diplopoda
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belongs to Subphyla Myripoda and Phylum Arthropoda, millipedes
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saturated
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The term ---------- is used because the fatty acids contain the maximum possible number of hydrogen atoms.
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pyrimidine
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1 of 2 types of nitrogenous bases found in nucleotides
cytosine, thymine, and uracil
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ion channels
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type of channel protein that open their channel because of a stimulas
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dioecious
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6 Referring to a plant species that has staminate and carpellate flowers on separate plants.
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myelin sheath
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In most animals, axon and dendrites are clustered into bundles of fibers called _______
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organic acids
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another term for carboxyl acids is __
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Test cross
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cross between and individual with the dominant phenotype and an individual with the recessive phenotype. The resulting phenotypic ratio indicates whether the dominant phenotype is homozygous or heterozygous
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oxidation
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The loss of electrons from a substance involved in a redox reaction
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Organismal Ecology
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The branch of ecology concerned with the morphological, physiological, and behavioral ways in which individual organisms meet the challenges posed by their biotic and abiotic environments
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bilateral symmetry
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Body plan having two corresponding or complementary halves
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carry impulse to ventricles
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av bundles and purkinje fibers
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citric acid cycle
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A chemical cycle involving eight steps that completes the metabolic breakdown of glucose molecules to carbon dioxide; occurs within the mitochondrion; the second major stage in cellular respiration.
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phospholipid movement
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they move back and forth in their "layer", switching places rapidly
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anaerobic respiration
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substances other than O2 (NO3 -, SO4 2-) accept electrons at the downhill end of electron transport chains
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restriction fragment length polymorphisms
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differences in DNA sequence on homologous chromosomes that result in different patternts of restriction fragment lengths for every species
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root pressure
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The upward push of water within the stele of vascular plants, caused by active pumping of minerals into the xylem by root cells.
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Covalent Bond
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The bond between two atoms that share a pair of electrons
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vascular bundle
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6 a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem
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Mass number
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Sum of number of protons and number of neutrons in an atoms nucleus
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facultative anaerobes
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use O2 if present but can also grow by fermentation in an anaerobic environment
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The presence of chloestrol in the plasma membranes of some animals
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enables membrane to stay fluid when the temperature drops
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