use a systematic battery of tube tests and plates designed to lead to identification of two unknown bacterial species‚ from the combination of all results. A sample of bacteria was used‚ labeled “Sample 4”‚ from which both species was to be obtained‚ one gram positive and one gram negative. Table 1 is a list of the possible bacteria to be identified; the basic ideas and practice of identification of an unknown sample of bacteria are important for a microbiologist to develop. Not only is proper procedural
Premium Bacteria Microbiology Microorganism
Life on Earth. 1. Analysis of the oldest sedimentary rocks provides evidence for the origin of life. * Identify the relationship between the conditions on early Earth and the origin of organic molecules. * Scientists estimate that the universe is 10-20 billion years old and arose as a big bang‚ which is still expanding the universe. * The early Earth was very different from the Earth today and no oxygen was present. This means that there was no ozone layer exposing the Earth’s surface
Premium Bacteria Eukaryote Cell
By examining where and when genes are expressed in a cell or organism‚ one can acquire valuable hints to its function‚ for genes compile the genetic make-up of an organism and exploring the function of genes is helping to uncover the complexity of ourselves and of other forms of life (1). Significant developments have been made in gene monitoring techniques specifically in DNA microarrays which only very recently revolutionized genome expression analysis (1). Despite continuous improvements and
Premium DNA Gene Genetics
title page picture What is the purpose for Genetically Modified Organisms? The purpose of GMOs is to make life easier for humans. GMOs are created with the well-being of humankind in focus. The many benefits that GMOs have today demonstrate this. They are used in research in medical fields‚ as well as in agriculture and pharmaceuticals. GMOs are beneficial to countries that suffer from any kind of nutritional deficiency. It is well-known that vitamins‚ proteins and fat are an important part
Premium DNA Gene Molecular biology
enhancements‚ stem cell research‚ cloning‚ genetic engineering‚ and genetically modified organisms. Biotechnology is “the manipulation of biological systems and organisms through technological means”(p. 471). There is tension between valuing liberty to pursue happiness of biotechnologies‚ and the potential negative outcomes of these technologies. Bioengineering‚ is the construction of machines to alter or supplement organisms. Biotechnologies result in therapeutic effects or extraordinary forms of enhancement
Premium DNA Gene Genetics
processes. The living world comprises an amazing diversity of living organisms. Early man could easily perceive the difference between inanimate matter and living organisms. Early man deified some of the inanimate matter (wind‚ sea‚ fire etc.) and some among the animals and plants. A common feature of all such forms of inanimate and animate objects was the sense of awe or fear that they evoked. The description of living organisms including human beings began much later in human history. Societies
Premium Species Organism
identification of unknown bacteria and viruses in a lab. Selective vs. Differential Media Selective vs. Differential Media Use the following website to help you answer Q 1 and 2 http://www.highlands.edu/academics/divisions/scipe/biology/labs/rome/selectivedifferential.htm 1. What is a selective medium? What makes the medium selective? Name 2 examples (3 pts.) A selective medium is a medium that contains antimicrobials‚ dyes or alcohol that supports the growth of certain organisms‚ while inhibiting
Premium DNA Bacteria Gene
CH 12 TRANSPORT IN LIVING ORGANISMS EXERCISE 1. FILL IN THE BLANKS (i) The principal physiological requirement of all organisms is the maintenance of …………………… (ii) The type of diffusion against the concentration gradient (up hill movement) involving the expenditure of energy is called…………………. (iii) The cell walls of the plants cells keep the……………within limit. (iv) The content of the vacuole of plant cell is called……………. (v) The internal pressure exerted on the cell wall by the
Premium Blood Blood type
I HOLD THE FUTURE: PRESERVING THE PHILIPPINES BIODIVERSITY The sum of all the different species of animals‚ plants‚ fungi‚ and microbial organisms living on Earth and the variety of habitats in which they live is called Biological Diversity or also known as the Biodiversity. Scientists estimate that upwards of 10 million—and some suggest more than 100 million—different species inhabit the Earth. Each species is adapted to its unique niche in the environment‚ from the peaks of mountains to the depths
Premium Biodiversity Species Extinction
phenotype. The zebrafish is a small (4–5 cm)‚ tropical‚ freshwater teleost fish (ray-finned)‚ and originally identified in the Ganges River in northeastern India. Development in the zebrafish is very fast compared to other vertebrate developmental model organisms. The embryos develop quickly in a transparent egg by making it possible to observe the entire process of vertebrate development. Organogenesis in zebrafish is rapid‚ and most organ primordia have formed by 24 hours of development. The 24-hour zebrafish
Premium DNA Gene Genetics