types are structurally quite different. In a prokaryotic cell, for instance, the DNA floats freely within the cell’s cytoplasm, while in a eukaryotic cell it is housed within a central command center called the nucleus. The nucleus is one of many organelles found within eukaryotic cells, but not in their simpler prokaryotic cousins (Infographic 3.4). Penicillin kills bacteria because of one im portant difference between prokaryotic and eukaryotic cells. Unlike human and other ani- CHAPTER 3: CELL FUNCTION AND STRUCTURE 3620001C03.indd 43 43 1/27/11 10:14 AM mal cells, most bacteria are surrounded by a cell wall.…
One of the main difference between an animal cell and a bacterial cell is a bacterial cell contains a plasmid, a ring of DNA, opposed to the chromosomes that animals possess. There are a few other differences, such as size and whether or not they contain membrane bound organelles, which bacteria do not. Bacterial cells are much smaller than animal cells.…
Viruses - are disease producing agents far smaller than bacteria. They are enclosed in a protein coating which makes them more difficult to destroy.…
Viruses are disease producing agents far smaller than bacteria, They are enclosed in a protein coating which makes them more difficult to destroy.…
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).…
An infective agent might enter the body through the air you breathe, food you eat, or through cuts or sores.…
* Bacteria are unicellular, prolcaryotic microorganism found almost in all kinds of habits. Some bacteria are beneficial like those involved in nitrogen fixation and some pathogenic, which causes diseases.…
Bacteria are very small cells which can rapidly reproduce in your body making you feel ill by damaging your body's cells and producing toxinsViruses & bacteria…
Viruses – it is a coated genetic material that invades cells and use’s the cells apparatus for reproduction.…
1.1: Bacteria are single-celled microorganisms with a simple cellular organization whose nucleus lacks a membrane.…
Bacteria are extremely small singular organisms which are found almost everywhere and also can spread immediately. some bacteria can be dangerous depending where it is in your body or in the environment and what bacteria it is from the person or an animal being contact with.…
1. The classification system developed by Linnaeus in the early 1700s divided living organisms into plant and animal kingdoms. Today, that has been expanded into five kingdoms. Which of the following inventions was most responsible for creating the need for the additional three kingdoms and why? (2 points)…
Viruses: This is a disease producing agents which are far smaller than bacteria. They are enclosed in a protein coating which makes them more difficult to destroy. These replicate only inside the living cells of organisms. They can infect all types of life forms i.e. plants, animals, and bacteria. The most common virus is the flu, it’s a contagious infection (it…
Viruses are a small infectious agent that can only multiply inside the cells of living organisms although unlike bacteria, fungi and parasites viruses are not living organisms. Viruses can infect any living organism such as humans, plants and animals. Viruses multiply by spreading from organism to organism for example viruses can be spread from human to human by coughing or sneezing.…
A bacteria is a 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). Every species has a great ability to produce off spring and its population expands until it runs out of food or it is limited by competition, its own waste products, or some other factor. Changes in climate or introduction of a new species from elsewhere can greatly affect the balance of nature.…
