Major Hormones: Origin, Target, Function

BiologyBy Schoolworkhelper Editorial Team December 3, 2010 7 Comments

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…

Enzymes in the Digestive System

BiologyBy Schoolworkhelper Editorial Team December 3, 2010 Leave a comment

Name of Enzyme Substrate Location Task Products Salivary Amylase (likes pH level of around 6.2-7.4) Amylose in the mouth Saliva which is released from the salivary glands Aid in the hydrolysis of the starch amylose into the disaccharide maltose (glycocidic bond) Maltose, and Amylose Pepsinogen No substrate, inactive form of pepsin Produced in the gastric…

John Dalton: Biography & Contributions

ScienceBy Schoolworkhelper Editorial Team December 3, 2010 Leave a comment

Biographical Information Born on September 6, 1766, in Eaglesfield, Cumberland County, England Son of a Quaker weaver Suffers from colour blindness Was educated at a Quaker school, where he taught at age 12 Moved to Kendal in 1781 to teach at another school Went to Manchester in 1793 to teach at the New College and…

DDT: Properties, Uses, WHMIS

BiologyBy Schoolworkhelper Editorial Team December 3, 2010 Leave a comment

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…

DDT: Environmental Impact, Dangers, History

ScienceBy Schoolworkhelper Editorial Team December 3, 2010 Leave a comment

Pests have plagued humanity for as long as history has been kept, leading to many diseases in the process. Many people have tried to fight these pests and diseases, but came up empty. DDT was the world’s first known pesticide and is arguably the world’s most well known. DDT was first synthesized by Othmar Ziedler…

The Armenian Genocide: Causes & History

HistoryBy Schoolworkhelper Editorial Team December 3, 2010 4 Comments

What comes to your head when you here the sounds of guns and screams. When women and children are wandering the streets begging, pleading for mercy. All the Turkish soldiers are wandering, with a gun in one hand and an Armenian’s head in the other. The terrified screams, “No! Please don’t! Not my children! Please!!”…

Ionization Energy Trend

ChemistryBy Schoolworkhelper Editorial Team December 3, 2010 Leave a comment

The graph shows three same structured gradual increases in three different areas- from elements 2 to 10, 11 to 18, 31 to 36. As the atomic number increases, the ionization energy slowly decreases. After Elements 2, 10, 18 and 36, the ionization energy level drops by a significant amount. Between elements 20 and 29, the…

Kidney Diseases: Diabetes, Bright, Stones

BiologyBy Schoolworkhelper Editorial Team December 3, 2010 Leave a comment

Diabetes Mellitus Caused by inadequate secretion of insulin from islet cells in the pancreas Less insulin means blood sugar level tends to rise Cells of proximal tubule are supplied with enough ATP to reabsorb .1 % blood sugar, but with disease much higher blood sugar concentrations are found with the excess sugar remaining in the…

Detecting Amylose: Starch Lab Answers

ScienceBy Schoolworkhelper Editorial Team December 3, 2010 Leave a comment

Purpose: To see if starch is present in different mediums Materials: – White paper – Popcorn – Plain Cheerios – Crackers – Rice – Unknown substances A, B, C, D, E Apparatus: – Petri dish – Iodine – Dropper – White paper Method: A small piece of white paper was ripped off and one…

Diabetes Insipidus & Mellitus: Treatment

BiologyBy Schoolworkhelper Editorial Team December 3, 2010 1 Comment

What is diabetes insipidus? Diabetes insipidus (DI) is an endocrine disorder involving deficient production or lack of effective action of an antidiuretic hormone (ADH or vasopressin). ADH is made in the hypothalamus (lower part of the brain), stored in and secreted by the pituitary gland (a small gland located below the hypothalamus), and works on…

Child Obesity: Who is to blame?

ScienceBy Schoolworkhelper Editorial Team December 2, 2010 Leave a comment

Today childhood obesity is the most common nutritional disorder affecting children and teens (Peters, 2009). Obesity is not just being overweight; it can contribute to a risk of ‍strokes, heart disease, type II diabetes, cancers and arthritis (‍McVeigh, 2009). With over 1.6 million children overweight in Canada, obesity rates in children is climbing at an…

Domestic Violence in Aboriginal Communities: Woman & Child Abuse

Law & PoliticsBy Schoolworkhelper Editorial Team December 2, 2010 Leave a comment

Domestic violence can be defined as the use of physical abuse in an intimate relationship including emotional, psychological and sexual abuse (Bopp, et al., 2006). Over the past few decades, the issue of domestic violence has become more prominent in our society. This issue within the Aboriginal community has been increasing more rapidly than ever…

Concepts of Politics: Power, Government, Society

Law & PoliticsBy Schoolworkhelper Editorial Team November 30, 2010 Leave a comment

Claims Society Politics Government Sovereignty(citizenship) The stats Power Claims Empirical = factual claims pointing to actual evidence Normative = evaluative (moral evaluation) Combination of both in all claims about politics, etc. Make a balance of both Society 2 or more people developing/having a social relationship with each other voluntary & spontaneous you create societies with…

Conservatism: Traditional, Neo-Conservatism, Individualist

HistoryBy Schoolworkhelper Editorial Team November 30, 2010 Leave a comment

Conservatism Classical Conservatism Contemporary North America Conservatism Traditional Conservatism Individualist Conservatism Neo-Conservatism Social/Religious Conservatism Key Ideas Differences between early or classical conservatives and self-proclaimed conservatives of recent years Opposed to “social engineering” of society by society, social groups, or government Humans are imperfect & no structure can make them perfect Government has very limited or…

Liberalism: Classical, Reform, Contemporary

HistoryBy Schoolworkhelper Editorial Team November 30, 2010 Leave a comment

Liberalism Classical Liberalism 1700s-1800s Locke & Smith Reform Liberalism 1800s-1900s Mill & Green Contemporary Liberalism 1930s- Keynes (1930s) & Rawls (1970s) Key Ideas Personal freedom – freedom from coercion Limited government – state serves & performs limited functions Equality of right – everyone must abide by laws, which must be applied equally and impartially Consent…

Potassium Chloride Enthalpy Change Lab Answers

ScienceBy Schoolworkhelper Editorial Team November 30, 2010 Leave a comment

Materials: Lab apron Eye protection Centigram or analytical balance 8-10g or unknown salt Water Thermometer 3 Styrofoam cups (calorimeter) 100 mL cylinder Filter paper Procedure: Safety equipment, including goggles were put on. 8-10g of an unknown salt on a filter paper was obtained from the teacher. The mass of the salt and filter paper were…

Understanding the Theories of Attraction and Mate Selection

Sociology & PhilosophyBy Schoolworkhelper Editorial Team November 30, 2010 Leave a comment

Theory Who? Main Concepts Relationships Related Theoretical Perspective Natural Selection Evolutionary psychologists -women prefer to mate with men who would be good fathers and who would stay around to be good providers -men preferred to mate with women who could bear healthy babies who could feed their children -could apply to any given relationship; especially…

What Effects of Concentrations of a Substrate on Enzyme Lab Answers

ScienceBy Schoolworkhelper Editorial Team November 30, 2010 Leave a comment

An enzyme is described as a biological catalyst that speeds up the rate of a chemical reaction. In order for an enzyme to perform its given job, it needs what is known as a substrate to bind to the active site of the enzyme so that the enzyme can speed up the reaction of the…

The Endocrine System

ScienceBy Schoolworkhelper Editorial Team November 30, 2010 Leave a comment

Hormones: chemicals released by cells that affect cells in other parts of the body Endocrine Hormones: chemicals secreted by endocrine glands directly to the blood Exocrine glands secret substances through ducts, where as endocrine glands secret directly into the blood The nervous system enables the body to adjust quickly to the environment; the endocrine system…

The Nervous System: Autonomic & Central

ScienceBy Schoolworkhelper Editorial Team November 30, 2010 2 Comments

Neural Circuits Reflex arc: neural circuit through the spinal cord that provides a framework for a reflex action The Central Nervous System The two components of the central nervous system are the brain and the spinal cord. Meninges are protective membranes that surround the brain and spinal cord. The Meninges is made up of three…

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