Laurel Susan Studio LLC retains the rights to this work, and it is not to be mass produced or distributed. This was created by Laurel Susan Studio LLC for your personal use only. This simple activity allows students who are blind or visually impaired to build the 3 shapes of bacteria. These would also make a great bulletin board display. A collection of six foldables (with instructions) are ready to be cut out and glued into a science notebook or on paper. The fourth part of this activity offers students an opportunity to research each of the three types of bacteria to discover how the bacteria can be harmful and helpful to humans. Part three is a page of three printable bookmarks (one for each bacteria shape) for students to color. A color key is included so students may self-check. It is a drawing of the three bacterial types, and students are asked to color each type a different color. Part two is an activity sheet for students to practice identifying the three types of bacteria. The first part of this activity is a one-page poster with information about each of the three bacterial shapes: names with singular and plural forms, their shapes, and etymology of two of the forms. Sarcina ventriculi).In this four-part activity, students will be introduced to the three most common bacterial shapes (coccus, bacillus, and spiral) and have the opportunity to research how the bacterial types are harmful and helpful.

Sarcina is a genus of bacteria that are found in cuboidal arrangements of eight cocci (e.g.Tetrads are clusters of four cocci arranged within the same plane (e.g.Staphylococci are irregular (grape-like) clusters of cocci (e.g.Streptococci are chains of cocci (e.g.Streptococcus pneumoniae and Neisseria gonorrhoeae) Those that remain attached can be classified based on cellular arrangement: Arrangements Ĭocci may occur as single cells or remain attached following cell division. It often causes nosocomial (hospital-acquired) infections. It can infect almost any tissue in the body, frequently the skin. Staphylococcus aureus is a major human pathogen. Many of these species produce carotenoid pigments, which color their colonies yellow or orange. List at least 5 major differences between bacteria and viruses. Explain the different major groups of microbes and how they relate to progenote. They ferment sugars, producing lactic acid as an end product. Draw the three shapes of bacterial cells (Coccus, Bacillus, and Spirillum) and identify the stains of the bacteria (gram-positive or gram-negative). also inhabit human skin, but they are facultative anaerobes. are obligate aerobes that inhabit human skin. The various gram-positive cocci differ physiologically and by habitat. Species of Staphylococcus have no regular plane of division.

resemble a string of beads because division always occurs in the same plane. Sarcina cells, for example, are arranged in cubical pockets because cell division alternates regularly among the three perpendicular planes. These arrangements reflect patterns of cell division and that cells stick together. Members of some genera are identifiable by the way cells are attached to one another: in pockets, in chains, or grape-like clusters. All are spherical or nearly so, but they vary considerably in size. The gram-positive cocci are a large group of bacteria with similar morphology.

While living in their host organism, cocci can be pathogenic (e.g., streptococcus), commensal, or symbiotic. The cell wall structure for cocci may vary between gram-positive (thick peptidoglycan layers) and gram-negative (thin peptidoglycan layers). Ĭocci is an English loanword of a modern or Neo-Latin noun, which in turn stems from the Greek masculine noun κόκκος ( cóccos) meaning 'berry'. In contrast to many bacilli-shaped bacteria, most cocci bacteria do not have flagella and are non-motile. Cocci can grow in pairs, chains, or clusters, depending on their orientation and attachment during cell division. Coccus refers to the shape of the bacteria, and can contain multiple genera, such as staphylococci or streptococci. Learn about the features and types of Bacillus bacteria in this article. Some types of Bacillus bacteria are harmful to humans, plants, or other organisms. Bacteria are categorized based on their shapes into three classes: cocci (spherical-shaped), bacillus (rod-shaped) and spiral ( of which there are two types: spirillum and spirochete). Bacillus, any of a genus of rod-shaped, gram-positive, aerobic or (under some conditions) anaerobic bacteria widely found in soil and water. A coccus (plural cocci) is any bacterium or archaeon that has a spherical, ovoid, or generally round shape.

Three bacteria shapes