Chapter 1. Microbiology – Diversity of Organisms Microorganisms- too small to be seen with the unaided eye “germ”- rapidly growing cell Microbes in our lives Pathogenic- disease causing Decompose organic waste Producers in ecosystem (photosynthesis) Produce industrial chemicals such as ethanol and acetone Produce fermented foods ( vinegar‚ cheese‚ bread) Produce products used in manufacturing (cellulose) and treatment (insulin) Designer Jeans: Made by Microbes? Stone washing- Tricoderma
Free Bacteria Cell Protein
that occurs during the development of the eggs (ova) and sperm. The development of mature eggs and sperm from precursor cells. Centrosome- A small region of cytoplasm adjacent to the nucleus that contains the centrioles and serves to organize microtubules. 2. How does the process of mitosis compare with meiosis? In mitosis‚ each of the two new cells (called the daughter cells) resulting from the cell division receives the same number of chromosomes that were present in the precursor cell (called
Premium Chromosome Meiosis Mitosis
Protozoa are single-celled eukaryotes organisms whose cells have nuclei that normally show characteristics associated with animals‚ most common mobility and heterotrophy. They are often grouped in the kingdom Protista together with the plant-like algae and fungus-like water molds and slime molds. Most algae are classified in the kingdoms Plantae and Chromista‚ and some the remaining forms may be classified as a kingdom Protozoa. The name is misleading‚ since they are not animals. Protozoa have traditionally
Premium Bacteria Eukaryote Animal
Biology Reviewer I. Definition of the cell -Cell is the basic unit/structure of life II. History of cell A. (1665) Robert Hooke- discovered the cell and he established the drawing of a cork cell B. (1674) Anton van Leeuwenhoek- observed red blood cell and myriad in a single cell organism in Pond water -discovered
Free Cell Eukaryote Organelle
What is Life? This perennial question the answer to which has somehow eluded the most brilliant minds. For while scientists have identified many years ago the right mix of the atoms and molecules that constitute cellular material‚ they have not succeeded in ‘switching it on’ to make it alive‚ or ‘breathing life’ into it (Rabago et.al‚2006) In this module you will: a. Explain the concepts of the cell theory b. Identify the parts of a cell c. Describe the function of each cell part d. Differentiate
Premium Cell Stem cell Eukaryote
Introduction Genetics: the science‚ which deals with the principles of heredity and variation. Heredity: transmission of characters from parents to their off spring. Variation: Differences for various characters among the individuals of the same species. Types of variation: 1. Environmental and 2. Hereditary 1. Heredity variation: Variation observed among the individuals of the same species due to difference in their genetic constitution is termed as heredity variation. 2. Environmental variation:
Free Cell Eukaryote DNA
Element: Simplest form of matter to have unique chemical properties. Atom: The smallest particles with unique chemical identities. Nucleus: Center of an atom (composed of protons and neutrons). Proton: Have a single positive charge (+1). Neutron: Have no charge. Electron: Tiny particles with a single negative charge and very low mass (-1)/determines chemical bonding properties of an atom. Atomic Number: Number of protons in the nucleus. Atomic Mass: Approximate number of protons and neutrons
Premium Atom Cell Protein
Research explain the following different manifestations of dementia: Huntington’s disease: Huntington’s disease is a progressive brain disorder caused by a single defective gene on chromosome 4 — one of the 23 human chromosomes that carry a person’s entire genetic code. This defect is "dominant‚" meaning that anyone who inherits it from a parent with Huntington’s will eventually develop the disease. The disorder is named for George Huntington‚ the physician who first described it in the late
Premium Alzheimer's disease
antlers‚ dentine‚ and bony plates. Subcutaneous connective tissues- connective tissue that separates the skin from the underlying muscles Chromatophores- specialized connective tissue cells which contain pigments. Types of Chromatophores 1. Melanophores- black or brown pigment (melamine) 2. Lipophores- red or yellow pigment (erythrocin and xanthin) 3. Quanophores- colorless‚ white crystalline materials (guanine) ex. Fishes 4. Photophores- make animal luminous. Ex. Deep sea shark Human skin
Premium Muscle Digestion Stomach
Cell Structure I. Cell History A. Anton Leewenhock (1600s) - first person to observe cells - in pond water‚ using a homemade microscope B. Robert Hooke (1665) - observed many kinds of animal tissue under a microscope - concludes that all animals are made up of cells C. Schwann (1868) - observed many kinds of animal tissue - concludes that all animals are made up of cells D. Schleiden (1869) - observed many kinds of plant tissue - concludes that all plants are made up of cells E. Cell
Premium Cell Organelle