Major Hormones: Origin, Target, Function

HORMONE GLAND ORIGIN TARGET TISSUE FUNCTION Adrenocorticotropic Pituitary gland (anterior) Adrenal cortex Triggers secretion of hydrocortisone from the adrenal gland Growth hormone Pituitary gland (anterior) Throughout body Stimulates growth and development Follicle-stimulating hormone Pituitary gland (anterior) Sex glands Stimulates female egg maturation and male sperm production Luteinizing hormone Pituitary gland (anterior) Sex glands Stimulates female…

DDT: Properties, Uses, WHMIS

Common Names: Anofex, Cesarex, Chlorophenothane, Dedelo, p, p’-DDT, Dinocide, Didimac, Digmar, ENT 1506, Genitox, Guesapon, Guesarol, Gexarex, Gyron, Hildit, Ixodex, Kopsol, Neocid, OMS 16, Micro DDT 75, Pentachlorin, Rukseam, R50 and Zerdane. Physical Properties of DDT – Created by the reaction of trichloroethanol with chlorobenzene – Stable, Nonflammable, Combustible molecule – Able to perform substitution…

Principles of Ecology

Organisms and Their Environment What is Ecology? –Ecology: The scientific study of interactions among organisms and their environments *Ecology reveals relationships among living and nonliving parts of the world! Ex- what a coyote eats; -how day length influences the behavior of migrating birds; -how shrimp help rid ocean fishes of parasites; -how acid rain threatens…

Kingdom Archaea

Organisms in Archaea live in extreme conditions, such as: Very hot (hot springs, volcanoes, sea floor vents) Very cold Acidic Alkaline Salty High pressure All Archaea are prokaryotic and live in anaerobic conditions (no oxygen) … they obtain the energy they require from inorganic molecules or from light. Originally, organisms from the Archaea were classified…

Evolution: Genetic Drift, Gene Flow, Mutations, Random Change

Random change Key factors that can cause evolution: –Small populations are more variable to changes in allele frequencies -non-random mating opportunities result in only those “preferred” traits being passed onto future populations –new alleles may be created when mutations occur (changes the frequencies of new and original alleles) -migration causes changes in the relative abundance…

Respiratory Disorders: Asthma, Bronchitis, Emphysema, Cystic Fibrosis

Asthma – results in contraction of smooth muscle that surrounds airways – makes breathing difficult – allergic reaction – treat with bronchodilators – causes airways to dilate (increase in diameter) Bronchitis – inflammation of bronchial lining + overproduction of mucous and frequent coughing – related to smoking and other irritants (air pollution etc) – increased…