Biology Revision for "O" level examinations

FINALLY The course YOU have been looking for With 88 % DISCOUNT!  CHECK THE LINK BELOW AND VIEW THE COURSE PREVIEW LECTURES CLICK HERE TO ACCESS THE COURSE ->  Biology 101: A Complete O Level Course

Hello everyone. Please check out this free course on Reproduction. Before you enroll and view the contents, you would need to create an account on www.udemy.com                                                        Click here to view the course page                                                        Click here to view the course page I also have three paid courses on Udemy. Please check them out by clicking below: Genetics and Reproduction course

What is the Endocrine system? It is a collection of  glands  that secrete  chemical messages  called hormones. Gland: A  gland  is a group of cells that produces and secretes, or gives off, chemicals. Hormone: are chemicals that regulate or controls the activity of certain cells or organs The nervous system sends electrical messages to control and coordinate the body. The endocrine system has a similar job, but uses chemicals to “communicate” Endocrine system works more slowly than the Nervous system Hormones are released from glands/cells into the blood vessels They travel to target organs, where they cause a change  Endocrine vs Nervous system The nervous system sends electrical messages to control and coordinate the body. The endocrine system has a similar job, but uses chemicals to “communicate” Endocrine system works more slowly than the Nervous system Response of Nervous system is short lived, while response of Endocrine system...

Click on the links below to access Past CXC papers Human and Social Biology Paper 1 (2011) Human and Social Biology Paper 1 (2010) Human and Social Biology Paper 1 (2009)

Hello Students. I recently launched a new course: " Introduction to Reproduction and Genetics" on Udemy.com. I wish to encourage you to enroll in this course, which is being offered at a very low cost. If you enroll in my other free courses, and complete 100% of the contents, then I would provide my paid course at a 50% discount. HOW TO ENROLL? You can enroll by first joining  https://www.udemy.com  . Next, in the search box, you can simply type in the name of my courses e.g. Introduction to Reproduction and Genetics or Introduction to Digestion and excretion (FREE COURSE) Alternatively, you can click on this link below to access the course page directly https://www.udemy.com/reproduction-and-genetics CLICK THE IMAGES BELOW TO HAVE AN ENLARGED VIEW Course Landing Page Course outline Contents for Genetics Section Contents for Reproduction Section

Hello everyone. Please check out this course that was made on the topic Reproduction. In this course, reproduction in plants and humans are examined. In addition, two lectures were included to explain the endocrine system. Click on this link below to check out the course :  Biology for O Level Examinations (CXC, GCSE): Reproduction

-          Blood transports materials such as oxygen, hormones and nutrients. In order for the nutrients to reach the individual cells, tissue fluids are used. They surround the tissues, and act as a ‘middle man’ between the blood and the tissues. -           The lymphatic system drains this tissue fluid away from the cells using lymph vessels. -           Lymph glands pass to the lymph glands which act as filters. The glands contain many white blood cells. The glands may become swollen during an infection, due to increase production of white blood cells. -           Lymph fluid pass on only one direction, because of the presence of valves (similar to veins) Functions of Lymphatic system -           Transport tissue fluids back into the blood -    ...