Ana Drummond Biology 2420 April 11‚ 2012 The Complement System The complement system is a nonspecific defense mechanism activated in response to invading organisms. This system gets its name from the fact that it complements the action of antibodies. It is the primary mechanism activated by antibodies to kill foreign cells by forming membrane attack complexes. In addition to directly lysing the invading organisms it also reinforces the general inflammatory tactics. It can be activated
Premium Immune system Bacteria Antibody
A Genetically Modified Organism is an organism whose inherited matter has been altered using heritable engineering techniques. It is basically a special set of technologies that alter the genetic makeups in organisms that vary‚ such as plants‚ animals‚ or bacteria. Combining genes from different species is known as recombinant DNA technology‚ and the outcome organism is known as genetically modified. Now the question lies‚ is genetically modified organisms needed to suppress hunger? In my opinion
Premium DNA Genetically modified organism Gene
usually are oval shaped if not almost egg shaped. This organism belongs to a specific group known as the ciliates (Cambell). They use specialized feeding structures such as the Buccal Cavity to ingest their food into their oral cavity (Shefferly‚ 2010). The Tetrahymena feed at different rates over time and can change with environmental variables. The food that is ingested into the Tetrahymena is contained in the food vacuoles inside of the organism. After the Tetrahymena has completed it’s feeding and
Premium Temperature Scientific method Time
synthesizing the DNA‚ and then inserting this construct into the host organism. Genes may be removed‚ or "knocked out"‚ using a nuclease. Gene targeting is a different technique that uses homologous recombination to change an endogenous gene‚ and can be used to delete a gene‚ remove exons‚ add a gene‚ or introduce point mutations. An organism that is generated through genetic engineering is considered to be a genetically modified organism (GMO). The first GMOs were bacteria in 1973; GM mice were generated
Premium DNA Genetically modified food Genetically modified organism
Transport System of Organisms Problems faced by Multicellular Organisms: a)Big size-the total surface area to volume (TSA/V) is decreased . Rate of diffusion of substances into and out of all body cells is low. b)Cells are often located far away from the external surface of the body. How multicellular organism overcome these problem? a)Have specialized structure to increase the surface area for the exchange of respiration gases. b)Have transport system to get gases respiration in and
Premium Digestion Blood Cell
Planning Introduction Stomata are pores on the bottom of leaves of vascular plants. The function of stomata is to allow gaseous exchange (transpiration) between the plant and the external environment (see diagrams below). This process is carried out by the plant‚ which controls the opening and closing of stomata via the guard cells. The more stomata a leaf contains the greater the rate of gas exchange and the less water it will be able to accumulate. Stomatal pores are formed between
Premium Photosynthesis Standard deviation Leaf
2013‚ Section 3 Prepared By Md Abdulla Al Mamun Fahim ID: 102 0366 030 Mahidur Rahman Khan ID: 102 0625 030 Md Nurul Azim Rifat ID: 101 0847 030 Tahsin Shahab Uddin ID: 101 0692 030 Prepared for Dr. S.M. Mostafa Kamal Khan Department of Biology and Microbiology North South University Date of Submission: 20th August‚ 2013 Sl | Topic | Page | 1 | Introduction | 2 | 2 | Description | | | 2.1 Impact on Air | 3 | | 2.2 Impact on Water | 3 | | 2.3 Impact on Soil Pollution | 5 |
Premium Water Industrial Revolution Groundwater
AP Psychology Free Response Questions Sample The following questions are samples of the free response questions from past AP Psychology exams. The free response sections are worth 33 1/3 percent of the total grade. Students have 50 minutes to answer two questions. The key to successfully answering these questions is to: completely define the terms using appropriate psychological terminology and then critically apply each term. Many students concentrate their efforts on the multiple-choice
Premium SAT Psychology Intelligence quotient
antibiotics. For this reason‚ it is important to test and observe unknown organisms in the lab to continually improve the health and well being of society. The objective of this report was to first isolate a single colony of an unknown culture on a LB agar plate. From here‚ a slant was made and used for multiple types of testing in order to determine the identity of the unknown organism. The tests performed to identify the unknown organism included Gram Staining‚ Fluid thioglycollate/aero-tolerance test
Premium Microbiology Bacteria Gram staining
What is a genetically modified organism? A genetically modified organism (GMO) is an organism whose genetic material has been altered using techniques in genetics generally known as recombinant DNA technology. Viruses‚ bacteria‚ fungi‚ plants‚ and animals are all examples of organisms that have been engineered so that they contain genes from at least on unrelated organism. To create a genetically modified organism a molecule from a different source are combined into another molecule to create
Premium DNA Agriculture Genetically modified organism