Workplace Hazardous Materials Information System (WHMIS)

The Workplace Hazardous Materials Information System (WHMIS) is a comprehensive national system for safe management of hazardous chemicals, which is legislated by both the federal and provincial jurisdictions. WHMIS is a three (3) part effort of labour, industry, and government which took several years to develop. It is unique in that it represents a consensus…

Types of Contraceptive Methods: Pros & Cons

CONTRACEPTIVES: The use of a device or procedure to prevent conception (pregnancy) as a result of sexual activity Sexual Abstinence Voluntary restraint from sexual intercourse   Advantages NO risk of pregnancy NO risk of STIs Appeals to certain religions/beliefs Disadvantages May not experience pleasure Calendar/Rhythm Method No sexual intercourse during ovulation   Advantages NO side…

Endosymbiosis & Lateral Gene Transfer

Endosymbiotic Theory: Mitochondria & Chloroplast are descendants of prokaryotic cells; they share clear structural/ biochemical features with modern prokaryotes. Cyanobacteria: blue-green algae; obtain their energy through photosynthesis Lateral gene Transfer: Gene from Mitochondria & Chloroplast MOVE from Mitochondria & Chloroplast to the nucleus Evidence of Endosymbiosis (Happened after evolution of aerobic prokaryotes) Morphology: Form of…