Tutor and Freelance Writer. Science Teacher and Lover of Essays. Article last reviewed: 2019 | St. Rosemary Institution © 2010-2020 | Creative Commons 4.0

Blood: Structure, Function, Components

Components: i) plasma ii) erythrocytes (red blood cells) iii) leukocytes (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…

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…