Although they are eukaryotes like plants and animals, the major difference is that fungal cells have cell walls that contain chitin, unlike the cell walls of plants, which contain cellulose. Fungi lack the chlorophyll necessary for photosynthesis and must therefore live as parasites or saprophytes Parasites: plant or animal that at some stage of its existence obtains its nourishment from another living organism called the host. Parasites may or may not harm the host, but they never benefit it. They include members of many plant and animal groups, and nearly all living things are at some time hosts to parasitic forms. Many bacteria are parasitic on external and internal body surfaces; some of these invade the inner tissues and cause disease.
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.
TASK 1 (P1) BACTERIA A) Labelled B) Bacteria is a single cell organism. They do not have a nucleus and are prokaryotic cells. Bacteria are simpler structures with no membrane bound organelles. A bacteria has a cell wall, plasma membrane, pilus, DNA, capsule and ribosomes. C) The average size of a bacteria is between the diameter of 0.5 to 5 µm.
causes and spread of infection outcome 1 understand the causes of infection · identify the differences between bacteria, viruses, fungi and parasites Bacteria: Bacteria are living things that are neither plants nor animals, but belong to a group all by themselves. They are very small--individually not more than one single cell--however there are normally millions of them together, for they can multiply really fast.Bacteria are prokaryotes (single cells that do not contain a nucleus). Bacteria is a single celled organism and, unlike viruses, do not need a living host to reproduce. Viruses: A virus is a small infectious agent that can replicate only inside the living cells of organisms. Most viruses are too small to be seen directly with a light microscope.
Bio, 2008). These plants have no stem and has anywhere from one to four leaf life structures called thallus (plural = thalli). It can reproduce by flowering and setting seed. When a new thallus has grown large enough and has roots, it then breaks of from the parent plant and grows separately (ETSU Dept. Bio, 2008).
QUESTION 1 A. Definition of terms: 1. Plasmid -An extra chromosomal genetic element that is not essential for growth and has no extracellular form. 2. Chemolithotroph - An organism that obtains its energy from the oxidation of inorganic compounds.
CAUSES AND SPREAD OF INFECTION [pic] HEALTH DIPLOMA LEVEL 2/3 UNIT 4223-008 |COMPLETED BY | |Date | | | | | | | |ASSESSED BY | |Date | | HSC 008-(1.1) Identify the differences between: Bacteria – Bacteria are living things that are neither plants nor animals, but belong to a group all by themselves. They are very small--individually not more than one single cell--however there are normally millions of them
Larvae following the single brood (univoltine) strategy are more likely have completed development. A multivoltine species is a species that has two or more broods of offspring per year. Multivoltine species are often short lived insects such as mosquitoes or mayflies. They have a short adult lifespan and often die soon after mating. The larvae then develop quickly and multiple generations occur within a year.
These are moisture loving plants found in the moist, damp, shady places. They have no true roots, stems or leaves(psudoparenchymous). They share some common features with the pteridophytes with respect to the reproductive organs. Their spores lie in a capsule which is on a seta. The mechanism for spore dispersal is also different.
Holoparasite – a plant that is completely parasitic on other plants and has virtually no chlorophyll. * 3b. Hemiparasite – a plant that is parasitic under natural conditions and is also photosynthetic to some degree. Hemiparasites may just obtain water and mineral nutrients from the host plant. Many obtain at least part of their organic nutrients from the host as well.