Blood: Structure, Function, Components

Components: i) plasma ii) erythrocytes (red blood cells) iii) leucocytes (white blood cells) iv) platelets Plasma: o    55% of blood volume and is 90% water o    Contains dissolved materials which are being transported: o    proteins (fibrinogen), hormones, nutrients, waste products, gases Erythrocytes: o    Function: > to carry oxygen o    Structure: >  no nucleus, cytoplasm contains…

CELLULAR RESPIRATION

Energy – needed for:   – movement – synthesis of complex compounds – active transport Food – provides energy needed by cells – broken down > heat (body heat, excess removed) chemical storage form Cellular Respiration – is the process by which chemical energy stored in food (usually glucose, but may be protein and lipids is…

Cell Reactions and Energy

Cells must perform thousands of different chemical reactions in order to survive.  These reactions are crucial to providing cells with energy. Endergonic reactions: -“energy in” require energy in order to proceed – biological endergonic reactions produce molecules that store energy (ex. Glucose) – Ex. Photosynthesis Exergonic reatctions: – “energy out” release energy – biological exergonic…

Mitosis and the Cell Cycle

Genetic continuity is the transmission of the hereditary material through cell division. The Cell Cycle –      cells do not divide continuously –      in cells capable of dividing, the period between cell divisions is called interphase –      cells spend most of their time in interphase because this is the phase where they perform their functions (obtaining…

Laws of Chemical Change

Observations of chemical reactions are summarized in certain generalizations called the laws of chemical change.  The three laws of chemical change are; 1)  Law of Conservation of Mass 2)  Law of Constant Composition 3)  Law of Multiple Proportions Law of Conservation of Mass States that during a chemical reaction, matter is neither created or destroyed…

What is Branding and Positioning

BRANDING AND POSITIONING PACKAGING Who packages the items? Raw material processors, manufacturers, retailers Why and how are things packaged? Protection Convenience Information Environmentally Friendly Promotion Appearance and Branding Packaging is often referred to as “THE SILENT SALESPERSON” 6 FUNCTIONS OF PACKAGING Protection Protect from breakage (bubble wrap, foam) Protect from germs, air, sunlight, dust/dirt (air…

What is Cultural Anthropology

Cultural anthropology is the study of how culture shapes human ideas and learned behaviours.  It examines how cultures have developed and compares similarities and differences among them. Cultural anthropologists base their knowledge on observation.  They try to be objective and draw conclusions from data, without imposing their own personal judgments. Many times anthropologists are faced…