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118 Cards in this Set
- Front
- Back
Taxonomy |
Ordered division and naming of organisms: two-part naming system |
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Cladistics |
Groups organism by common ancestor |
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Systematics |
Depict evolutionary relationships in branching phylogenetic trees |
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Taxonomic levels |
Domain, kingdom, phylum, class, family, genus species |
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Paraphyletic |
Pertaining to a group of taxa that consists of a common ancestor and some, but not all, of its descendants |
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Polyphyletic |
Pertaining to a group of taxa that includes distantly related organisms but does not include their most recent common ancestor |
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Monophyletic |
Pertaining to a group of taxa that consists of a common ancestor and all of its descendants. Equivalent to a clade |
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Biological organization |
Biosphere, ecosystem, communities, populations, organisms, organs and organ systems, tissues, cells, organelles, molecules |
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Macromolecules |
Nucleic acids, proteins, lipids,carbohydrates |
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Xylem |
Vascular plant tissue consisting mainly of tubular dead cells that conduct most of the water and minerals upward from the roots to the rest of the plants |
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Phloem |
Vascular plant tissue consisting of living cells arranged into elongated tubes that transport sugar and other organic nutrients throughout the plant |
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Cuticle |
A waxy covering on the surface of stems and leaves that prevent dessication in terrestrial plants |
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Spores |
In the life cycle of a plant or alga undergoing alternation of generations, a haploid cell produced in the sporophyte by meoisis. A spore can divide by mitosis to help develop into a multicellular haploid individual, without fusing with another cell. |
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Seeds |
An adaption of some terrestrial plants consisting of an embryo packaged along with a store of food within a protective coat |
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Guard cells |
The two cells that flank the stomatal pore and regulate the opening and closing of the pore |
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Lignin |
A strong polymer embedded in the cellulose matrix of the secondary cell walls of vascular plants that provides structural support in terrestrial species |
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Cellulose |
A structural polysaccharide of plant cell walls, consisting of glucose monomers joined by glycosidic linkages |
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Cell wall |
A protective layer external to the plasma membrane in the cells of plants, prokaryotes, fungi, and some protists. Cellulose:plants chitin:fungi peptidoglycan:bacteria |
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Chlorophyll a |
A photosynthetic pigment that participates directly in the light reactions which convert solar energy to chemical energy |
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Chlorophyll b |
An accessory photosynthetic pigment that transfers energy to chlorophyll a |
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Chitin |
A structural polysaccaride consisting of aminosugar monomers found in many fungal cell walls and in the exoskeleton of arthropods |
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Haustoria |
A specialized hypa that can penetrate the tissues of host organisms |
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mycelium |
The densely branched network of hypae in fungus |
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Lichen |
Symbiotic association between a photosynthetic microorganism and a fungus |
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Arbuscular mycorrhizae |
Extend branching hypae throughout the root cell wall and into tubes formed by invagination |
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Karyogamy |
The fusion of haploid nuclei contributed by the two parents, proceeded by plasmogamy |
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Sporopollenin |
A durable polymer that covers exposed zygotes of chatophyte algae and forms walla of plant spores preventing them from drying out |
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Septa |
One of the cross walls that divide a fungal hyphae into cells. Generally have pores large enough to allow ribosomes, mitochondria, and nuclei to flow from cell to cell |
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Zygomycota |
Characterized by the formation of a sturdy structure called a zygosporangium during sexual reproduction (a place where karyogamy occurs) |
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Ascomycota |
Commonly called sac fumgus . name comes from the sac like structure in which spores develop |
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Basidiomycota |
Commonly called club fungus. Name comes from the club like basidium. (A reproductive appendage that produces sexual spores on the gills of mushrooms) |
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Glomeromycota |
Characterized by the distinct branching form of mycorrhizae called arbuscular mycorrhizae |
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Chytridiomycota |
Mostly aquatic fungi with flagelated zoospores that represents an early diverging fungal lineage |
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Charophyceans |
Green algae |
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Bryophytes |
Moss, liverwart. Nonvascular plant that lives on land but lacks some of the terrestrial adaptions of vascular plants |
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Lycophytes |
Includes club mosses |
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Gymnosperms |
A vascular plant that beats naked seeds- seeds not enclosed on chambers |
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Angiosperms |
A flowering plant which forms seeds inside a protective chamber called an ovary |
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Hox genes |
Determine how the body will form |
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Gastrulation |
A series of cell and tissue movements in which the blastula stage embryo folds inward producing a three layered embyro (the gastrula- ectoderm, endoderm, mesoderm) |
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Amoebocytes |
Amoeba like cell that moves by pseudopodia and is found in most animals. Depending the species it may digest and distribute food, dispose of waster. Form skeletal fibers, fight infections, or change into other cell types |
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Choanocyte |
Flagellated collar cells that generate water current through the sponge and ingest suspended food |
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Cnidocytes |
Unique cells that function in defense and capture of prey |
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Nematocysts |
Specialized cells within cnidocytes that eject a stinging thread |
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Lateral line |
Series of pores and receptors along the sides of the body in fishes to detect water movement and vibrations |
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Foot |
Found on a mollusc, used for movement |
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Chelicerae |
Claw like feeding appendages (sea spiders, ticks mites etc) |
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4 essential nutrients |
Essential amino acids, essential fatty acids, vitamins, minerals |
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Types of feeders |
Filter feeders, suspension feeders |
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Nutrition process |
Ingestion, digestion, absorption, and elimination |
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Digestion |
Liver, pancreas, gall bladder have a significant effect on the digestion of macraloecules |
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Stomach |
Stores food and secretes gastric juice which converts a meal to acid chyme |
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Protein |
Digested in the stomach |
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Bile |
Aids is absorption |
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Single circulation |
Boney fish and sharks have single circulation, blood leaving the 2 chambered heart passes through 2 capillary beds before returning |
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Double circulation |
Amphibian and reptiles, oxygen poor and oxygen rich blood are pumped separately from the left and right side of the heart |
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Vertebrae hearts |
Contain 2 or more chambers, blood enters through the atrium and is pumped out through the ventricle |
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SA node |
Sinoatrial node, or the pacemaker, sets rate and timing at which the cardiac muscle cells contract |
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SA node |
Influenced by nerves, giones, body temperature and exercise |
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Capilaries |
Have thin walla to facilitate the exchange of materials |
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Capilaries |
Have thin walla to facilitate the exchange of materials |
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Arteries |
Have thicker walla than veins to accommodate high bp pumped from the heart |
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Heart attack |
Death of cardiac muscle tissue resulting from a blockage of one or more coronary arteries |
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Stroke |
Death of the nervous tissue in the brain, usually resulting from rupture or blockage of arteries in the head |
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Blood components |
Red blood cells transport 02, white blood cells act in defense, platelets help clot, and plasma contains ions, water and nutrients |
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Osmoregulation |
Regulates solute concentrations and balances the gain and loss of water |
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Osmoconformers |
Consisting of only some marine animals, are isoosmotic with their surrounding |
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Osmoregulator |
Expend energy to control water uptake and loss in a hyperosomtatic or hypoosmotic environment |
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Metanephridia |
Occur in each segment of the earthworm, consist of tubules that collect coelomic fluid and produce dilute unrine for excretion |
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Nephron |
The functional unit of the vertebrae kidney, consists of a single long tubule and a ball of capillaries called glomerulus |
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Kidneys |
The excretory organs of vertebraes , function in both excretion and osmoregulation |
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Malpighian tubules |
Occur in insects and other terrestrial arthropods, remove nitrogenous wastes from hemolymph and function in osmoregulation |
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Parthenogenesis |
Development of embryo from an unfertilized egg, male and female nuclei fail to unite after fertilization |
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Cleavage |
Rapid cell division |
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Gastrulation |
The movement of cells from the blastila surface to the interior of the embryo |
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Organogenesis |
Formation of organs |
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Gastrulation |
Rearranges the cells of the blastula into a three layered embryo called the gastrula |
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Gastrulation produces |
Ectoderm-outer layer endoderm- lines the digestive tract mesoderm- partly fills the space between the endoderm and the ectoderm |
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Chorion |
Functions in gas exchange |
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Amnion |
Encloses the amniotic fluid |
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Yolk sac |
Encloses the yolk |
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Allantosis |
Disposes of waste products and contributes to gas exchange |
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Asexual |
Only one parent, widespread in bacteria, no special reproductive organs, ensures rapid increase in numbera |
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Binary fission |
Asexual reproductive method- common among bacteria and protozoa, parent divides by mitosis, can be lengthwise or transverse |
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Sporogamy |
Form of multiple fission in parasitic protozoa |
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Budding |
Unequal division of an organism, bud is an outgrowth of the parent, develops organs and then detatches, occurs in cnidarias |
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Sexual reproduction |
Generally involves 2 parents, special germ cells unite to form a zygote, richer more diverse population |
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Fragmentation |
Multicellular animal breaking into many fragments that become a new animal occurs in anemones and hydroids |
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Oviparous |
Egg birth, lays egg outside of body |
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Ovoviviparous |
Retain eggs in their body, egg live birth |
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Viviparous |
Live birth |
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Nerve net |
Cnidaria |
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Radial nerve |
Echinodermata |
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Brain and nerve cord |
Flatworm and annelida |
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CNS and PNS |
Vertebraes |
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CNS |
Composed of the brain and spinal cord |
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PNS |
Composed of nerves and ganglia |
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Spinal cord |
Conveys info from and to the brain, produces reflexes independently of the brain |
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Gray matter |
Consists of neuron cell bodies, dendrites and unmyelinated axons |
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White matter |
Consists of bundles of myelinated axons |
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Cerebral spinal fluid |
Central canal of the spinal cord and the ventricles of the brain are filled with CSF. CSF is filtered from blood and functions to cushion the brain and spinal cord as well as to provide nutrients and remove waste |
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Gilia |
Numerous functions to nourish, support and regulate neurons |
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PNS |
Consists of the motor system and the autonomic nervous system |
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Motor system |
Carries signals to the skeletal muscles and is voluntary |
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Autonomic nervous system |
Regulates smooth and cardiac muscles and is generally involuntary |
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Autonomic nervous system |
Has parasympathetic, sympathetic, and enteric division |
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Sympathetic |
Regulates arousal and energy generation |
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Parasympathetic |
Has antagonistic effects on target organs and promotes calming and a return to rest and digest functions |
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Enteric |
Controls activity of the digestive tract, pancreas, and gallbladder |
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Afferent neurons |
Send from sensory to CNS |
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Efferent |
Send from CNS TO PNS |
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PNS |
Transmits info to and from the CNS and regulates movement and the internal environment |
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Cerebellum |
Coordination |
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Occipital lobe |
Visual |
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Partial lobe |
Sensory |
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Frontal lobe |
Motor cortex, muscles, decision making and planning |
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Temporal lobe |
Hearing |
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Hippocampus |
Short and long term memory |