Organelle

Important Vocabulary (highlighted in the handout): Stimulus, neurons, dendrites, neurotransmitters, axon, myelin, action potential, graded potential, transmembrane potential, neuroglia, cerebrum, spinal cord What is the central nervous system? It’s a system which consists of the nerves in the brain and spinal cord. This system only makes up about 3% of a human’s body weight but serves a vital function, gathering information about and reacting to its environment and any stimulus. Don’t Shoot the…

Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) are two very widespread techniques for examining various properties of substances in many fields of study. These fields can range from biology to chemistry to geology and several others (5). Both work by using the electromagnetic properties of the ways that electrons travel and interact with other atoms. Because electrons have a shorter wavelength of motion and a much higher energy than light, electron microscopy has a…

Introduction Cancer is a disease whereby cells undergo changes that cause them to grow uncontrollably1. These changes are caused by gene mutations2. Genes are sections of deoxyribonucleic acid (DNA), contained within every cell2. Genes control which proteins are synthesised and which cells should be destroyed2. Each type of cancer is classified according to the site where the cancer initiated, i.e. the location of initial gene mutation3. Malignant melanoma is a skin cancer whereby the…

The Extraordinary Science of Microbiology There are a wide variety of microorganisms in this world. The major groups of microorganisms include bacteria and fungi. These microorganisms are found all over the earth. The study of microorganisms started in the mid-1600’s. Most people believed that microorganisms only spread deadly diseases, but scientists proved that microorganisms can also be beneficial to human life. The wide variety of microorganisms that are found everywhere are most well…

The nervous system makes it possible for animals to know and react to the environment around them. A change or event that evokes a specific functional reaction in an organ or tissue is a stimulus. There can either be an internal or an external stimulus. Internal stimulus being something like hunger or pain, while external is more along the lines of a sound or an odor. The nervous system interprets stimuli and orders other organ systems to respond. The nervous system does so through using sensory…

Ivelisse Rivera has had her life crippled by Type 1 Diabetes since she was 22 years old. She went to the doctor 's office one day and received this dark soul-wrenching news. She remembers breaking out into tears right in front of the doctor as she knew that she would have to live an entirely new life. From that day she vowed to never eat sweets, her most favorite thing in the world; and to this day she never has. She is in her mid forties living healthy as can be with an angelic smile on her…

Green Fluorescent protein and Green Fluorescent protein are suggested to be involved in bacterial transformation tool, which helps the scientists visualize the normal protein in cell. To test the hypothesis, the experiment had been collected the around 15 colonies from E.coli source plates. Those amounts of E.coli, then, were used to test under transformation of E.coli with Green and Blue Fluorescent Proteins procedure. As the result, the E.coli that had been injected pFluoroGreen and…

Introduction: Chlamydomonas is a unicellular green alga that contains two flagellas that are used for swimming. It is found in fresh water, in oceans, and in soil. Chlamydomonas are easily grown and controlled. We study chlamydomonas because we are able to easily deflagellate them and then allow them to regenerate their flagella using different chemicals. Due to this characteristic, we are able to study how flagella growth is affected and the rate of flagella growth once deflagellated.…

Unit 4 – Fiona Bennett Brain Science In this unit I will be investigating the structure of the brain. The human brain is responsible for everything that happens in our bodies. On average the brain weighs 1.5 kilograms. It is one the most complex organs in the human body. The brain controls everything from coordinating movements to constructing sentences and even simple things like breathing. The brain is supplied with oxygen to keep it alive by a network of blood vessels. Structure of the brain…

Textbook Reference: 6.4 What Are the Active Processes of Membrane Transport? Page: 120 5. Barrier formation is only one function of the cell membrane. Describe some other functions of the membrane and discuss how the membrane is suited for those functions. Answer: Membranes function in processing energy transformation and in the organization of chemical reactions. Integral and peripheral proteins contribute to these functions. The membrane serves as a holding site for the catalytic enzymes…