The euryarchaeota which include methane-producers and salt-lovers; and the korarchaeota catch-all group for archaeans about which very little is known. 9. Protists are eukaryotes rather than prokaryotes. Eukaryotes are organisms that have cells that contain a nucleus. Prokaryotes are organisms that have cells that do not have a nucleus.
Unit 4222-265 Causes and spread of infection (ICO2) Understand the causes of infection 1. The differences between bacteria, viruses, fungi and parasites Bacteria belong to a group of single celled microorganisms which are classified as prokaryotes i.e. they do not have membrane bound organelles. They have no true nucleus as the DNA is not contained within a membrane or separated from the rest of the cell, but is coiled up in a region of the cytoplasm called the nucleoid and the cell is surrounded by a cell wall an outer covering that protects the bacterial cell and gives it shape. Viruses are infectious agents, often highly host-specific, consisting of genetic material surrounded by a protein coat.
Diatoms are type of algae , found in toothpaste, they can be classified into two groups called centric and pennate. Finally there are protozoa which are single celled and can cause diseases such as malaria and sleep sickness. (www.enviroliteracy.org/article.php/317.html ) As do we, microorganisms under go normal life functions. Although they are so tiny they still could reproduce, and carry out processes, such as excretion, respiration and regulation. They have their own way of moving called locomotion and different types of structures.
Identify the differences between bacteria, viruses, fungi and parasites Answer: Bacteria Bacteria are single-cell microorganisms which generally exist in large numbers and are microscopic in size. Bacteria can be either beneficial (bacteria in the intestinal tract aid digestion and are part of the normal body flora) or can be the cause of disease (for example pneumonia, food poisoning or bacterial meningitis). Viruses A virus is an infectious agent which can only live and replicate inside organism cells. The main difference between viruses and bacteria is that they are unable to reproduce in food – they need a living host cell to replicate. They replicate by infecting and taking over the functions of the host cell.
The three regions of the pancreas are labeled as __________, ___________, and ____________. 215. The pancreas is a ________ gland. 216. The bulk of the pancreas is a ___________ gland.
What is the cell’s cytoplasm? Are all organelles found in the cytoplasm? Is the nucleus part of the cytoplasm?inside of the membrane and outside of the nucleus. Most are found, the nulceus is not part of the cytoplasm 9. What is the difference between prokaryotic cells and eukaryotic cells?
Most viruses are too small to be seen directly with a light microscope. Viruses infect all types of organisms, from animals and plants to bacteria .Viruses are not considered living because they are unable to reproduce.All viruses have genes made from either DNA or RNA, long molecules that carry genetic information; all have a protein coat that protects these genes; and some have an envelope of fat that surrounds them when they are outside a cell. Fungi: These are Eukaryotes..when compared to bacteria(prokaryote) and virus.Like plants and animals, fungi are eukaryotic multicellular organisms.Fungi are multi-cellular organisms and parasites are any vectors that require a living host in order to live/reproduce. Both bacteria and fungi can survive on their own, while viruses have to infect a host to survive Parasites: A parasite is an organism that lives on or inside another organism to the detriment of the host organism. These are of various forms and types.A parasite is an organism that lives on or in a host and gets its food from or at the expense of its host.
Causes and spread of infection 1. Understand the causes of infection 1. Identify the differences between bacteria, viruses, fungi and parasites Bacteria is living things that are neither animals or plants but a group that belongs to themselves. Bacteria are prokaryotic microorganism, which is a single cell that doesn’t contain nucleus. Viruses are a small infectious agent that can multiply only inside living cells of organisms.
Causes and spread of infection Understand the causes of infection Outcome 1 Identify the differences between bacteria, viruses, fungi and parasites All 4 are different types of pathogens Bacteria is a single celled organism that multiply by themselves. They live within and on most living and non-living things. The majority of bacteria are harmless and beneficial to the human body but some can cause infectious diseases. A bacterium usually affects one part of the body and doesn’t spread across or through the body. Bacterial infections are normally treated with a course of antibiotics.
Vertebrate Characteristics and Diversity Phylum Chordata * 48,000 species * true coelom * Chordates” * Contains invertebrate and vertebrate species * All have bilateral symmetry * All at one point have a notochord, dorsal nerve cord, pharynx, and gill slits * Aquatic and terrestrial * Deutrostomes * Tail sometime in lifecycle. 4 major identifying characteristics: 1. Notochord * Flexible rod like structure enclosed by a fibrous sheath extends the length of the body in larva and/or adult. * provides basic support and serves as main axis for muscle attachments to permit “fishlike” undulatory movements. * first part of skeleton to form in embryo * in primitive chordates the notochord persists through life.