Some examples are the circulatory, the excretory, the muscle, and the digestive systems. For example, the digestion system is an organ system that digests the food a person eats. Some organs in the digestive system are the esophagus, rectum, stomach, liver, gall bladder, pancreas, large intestine, small intestine, and appendix. The digestive system is very important because without it, organisms would not be able to digest food. Food would just sit inside the body or go through it without the body taking any energy for fuel.
Digestion of materials by endocytosis: Lysosomes may fuse with vesicles or vacuoles formed by endocytosis and release their enzymes into it for digestion. The material for digestion may be food (protozoa) or a foreign body like parasite (defense purpose) .The products of digestion are absorbed and assimilated leaving undigested which are released outside through exocytosis (vacuole migrates and attach with cell membrane and release its contents). 2. Autophagy: process by which unwanted structures within the cell are engulfed and digested within lysosomes .they first enclose by single membrane ,usually derived from smooth ER and structure then fuses with a lysosomes to form an “autophagic vacuole”, In which the unwanted material are digested. This is part of the normal turnover of cytoplasm organelles replacing older with new ones.
Robots can be very useful in the situations where it is dangerous for the human being to work. A Nanorobots is therefore a very tiny robot, which needs a microscope to see. Researches declared that the outer of the nanorobots is likely be constructed of the carbon atoms in the diamond structure. They will have a diameter of about 0.5 to 3 microns and will be constructed out of parts with dimension about 100 nanometers. There are of two kinds of nanorobots; assembler and self replicators.
Metabolism is the chemical process that occurs in every living organism to maintain its life. Without it, an organism would ultimately die because metabolism is the powerhouse of an organisms body, creating energy to make it work and function. There are two different processes that occur in metabolism, these processes are called catabolism and anabolism. In the catabolism process molecules breakdown, these molecules include carbohydrates, proteins, and fats. When they breakdown they go into a simpler form, which is then used to create energy that the body can use.
Cells, the smallest unit of life, make up all living organisms. Humans are made up of over a trillion cells; red blood cells, white blood cells, skin cells, and more, are all a part of what composes the human body. But, cells also make up the body and structure of bacteria, archaea, protists, fungi, plants, and animals. They can be comprised into two different categories: the eukaryotic cells and the prokaryotic cells. Eukaryotic cells have membrane-bound organelles and a membrane-bound nucleus, while prokaryotic cells have no membrane-bound organelles and no membrane-bound nucleus.
The Digestive System The digestive system is a system consisting of the mouth, oesophagus, stomach, gallbladder, small intestine, large intestine, the rectum and the anus. The functions of the digestive system are: • To break down food particles into molecules for digestion • To absorb into the bloodstream the small molecules produced by digestion • To eliminate un digested and unabsorbed foodstuffs and other waste products from the body The full digestive process begins at the mouth. The food enters the mouth and is chewed. This is call mastication and it gives the food a greater surface area which enables enzymes to break the food down making it easier to digest. The process of breaking down the food starts with the saliva in your mouth.
While the nervous muscles to contract and pull your hand away from the stove. In contrast, the endocrine system releases chemical messengers called hormones into can the bloodstream. These molecular messengers can affect tissues and organs throughout the body. For example, homeostatic regulation dependent on endocrine function include the long-term regulation of blood volume and composition, and the adjustment of organ system function during starvation. A homeostatic regulatory mechanism consists of three parts such as a receptor, a control, and an
What are the similarities and difference between cellular respiration, fermentation, and photosynthesis? Well, cellular respiration is a series of chemical reactions that convert into energy in food molecules into a usable form of energy called ATP. Fermentation is a reaction that eukaryotic and prokaryotic cells can use to obtain energy from food when oxygen levels are low. Photosynthesis is a series of chemical reactions that convert light energy, water, and CO2 into the food-energy molecule glucose and give off oxygen. The similarities are, they all make energy/food to make energy.
Iron is part of the heme in the hemoglobin found in the red blood cell. Heme can be recycled after the red cell has died. Iron is regulated by the live, therefore, excess of iron storage in the liver can also trigger a negative feedback in the epithelium cell. when the liver stores enough iron it releases a Hepcidin. Hepcidin inhibits the ferroportin from release any more iron into the blood circulation.
Device efficiency with reduction of particle size in semiconductor industry is also a significant factor for the development of nanotechnology. The field of nanotechnology explores the materials and their properties [28 -35 2-8], nanoscale of synthesized material when at least one dimension of the nanostructure is in one hundred nanometer range. Practically the materials in nanoscale have only few atoms or the clusters of atoms, and the properties of the materials have been found to be altered because of the quantum confinement effect. Nanomaterials have structural features in between to those of atoms and bulk materials. Nanomaterials exhibit a diversification of properties that are different and often significantly improved in comparison with those of
These were Atomic physicists (OI ). For example, Robert Boyle suggested that the smallest chemical elements were the simplest forms of matter (Doc. 1). Also, ancient, greek philosophers Leucippus and Democritus were the first to discover atoms. Many others were devoted to the study of atoms, and gave many ideas of what atoms were.
Chapter 2 Fundamental Building Blocks: Chemistry, Water, and pH 1. Cells that make up complex living things do what they do because of a chemical reaction 2. Repulsion & bonding, latching on & re-forming, depositing & breaking down what makes people plants and birds function at this level is chemistry 2.1 Chemistry’s Building Block: The Atom 1. Matter could defined as anything that takes up space and has a mass 2. Mass it’s a measure of matter in any given object 3.
Macromolecules are usually used to refer to large biological polymer which are made up of small monomers linked together. All living things contain organic macromolecules, which is divided into four main groups: Lipids, proteins, carbohydrates and nucleic acids. (D 'Onofrio, 2009-2015) Characteristic for these organic molecules is that they are made up of only a small number of elements: carbon, hydrogen, oxygen, and to smaller amounts nitrogen, phosphorus and sulfur. Carbohydrates are better known as sugars and starches. There are three main categories in which carbohydrates can be divided into: Monosaccharides, disaccharides and polysaccharides.
In order for organisms to carry on life, energy must be provided. The food taken into the body must be broken down into smaller pieces before it can be used as a source of energy by the organism. This process of breaking down food is called digestion and there are many enzymes used in order for digestion to occur. Enzymes are catalysts, which means that they can start and speed up a chemical reaction. Without enzymes in our body, it would take a longer period of time for digestion to occur.