Diagrams. The inward growth of membrane continues. Endospore. Resistant spores germinate during the incubation period on subsequent exposure, the vegetative cells will be destroyed. Bacterial Reproduction: Asexual Most bacteria reproduce by binary fission. During binary fission, the single DNA molecule replicates and both copies attach to the cell membrane. This PowerPoint Presentation comes from the Virtual Cell Biology Classroom of Science Prof Online, and, as such, is licensed under Creative Commons Attribution-ShareAlike 3.0.; meaning you can download, share and alter any of this presentation, but you can’t sell it or repackage and sell any part of it. Be the first to review this product. The cell membrane begins to grow between the two DNA molecules 4. Binary Fission • “a method of asexual reproduction involving halving of the nucleus and cytoplasm of the cell followed by the development of each half into a new individual” • septum • progeny cells • generation time More slides like this. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. When fresh liquid medium is inoculated with a given number of bacteria and incubated for sufficient period of time, it gives a characteristic growth pattern of bacteria. SEXUAL REPRODUCTION Binary Fission - creates new bacteria but no genetic diversity 3. single DNA molecule replicates and both copies attach to the cell membrane. Microbial growth and reproduction. Factors affecting Microbial growth Physical factors •pH •Temperature •Osmotic pressure •Hydrostatic pressure A cell wall then forms between the two DNA And daughter cell , finally gets separated from the parent cell. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. See our User Agreement and Privacy Policy. ADVERTISEMENTS: The following points highlight the five methods by which reproduction in bacteria takes place. We will conclude this unit by learning about horizontal gene transfer, a process by which one bacteria cell incorporates genetic changes from another cell without being its offspring. You can change your ad preferences anytime. Laboratory (in vitro) studies of bacterial growth in continuous culture have shown that the microorganisms grow exponentially in a condition of balanced growth, and the generation time is determined by the rate at which fresh nutrients are supplied to the culture. 4. There are three ways by which the reproduction of bacteria occurs; those processes are (1) Vegetative, (2) Asexual and (3) Sexual.Let us go on a discussion: 1. Most of the bacteria reproduces by asexual reproduction. The cells of a sporophyte body have a full complement of chromosomes (i.e., the cells are diploid, or 2n); the sporophyte is the typical plant body that one sees when one looks at an angiosperm.The gametophyte arises when cells of the sporophyte, in preparation for reproduction, … Both asexual and sexual reproduction occurs in bacteria. For example, E. coli, when grown in a rich medium, with plenty of aeration at 37°C is capable of dividing every 20 min. Nutrients are needed as building materials for the cell and as a source of energy to do cellular work. All living organisms obtain _____ (_____) from their environment. membrane. Show here is an example of Methicillin-resistantStaphylococcus aureus, or MRSA, bacteria. The Adobe Flash plugin is needed to view this content. therefore in this presentation we have some reproductive endocrinologist to identify factors that may be causing infertility. In fungi, unicellular algae, and protozoa, reproduction involves a duplication of the nucleus through the asexual process of mitosis and a splitting of the cell in cytokinesis. Growth – increase in cellular constitution Growth involves, 1. This phase is called log phase because the logarithm of the bacterial mass increases linearly with time, and exponential growth phase because the number of cells increases as an exponential function of 2 n (i.e. If you continue browsing the site, you agree to the use of cookies on this website. 36 Individual cells are formed. Factors Affecting Growth of Bacteria. Bacterial Reproduction. Bacterial Reproduction - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Microbial growth •The microbial growth is the increase in number of cells rather than in size of individual cells. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. 1. Reproduction and growth of bacteria by Tanzir 1. 4Bacteria grow and divide by binaryfission, a rapid and relatively simple process. Growth Curve. Under ideal conditions some bacterial species may divide every 10–15 minutes—a doubling of the population at these time intervals. pH: pH affects the ionic properties of bacterial cell so it affects the growth of bacteria. 2.19). Now customize the name of a clipboard to store your clips.

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