2.1.1 Distinguish between biotic and abiotic components of an ecosystem * Biotic factors in an ecosystem are living‚ biological factors that may influence an organism in an ecosystem * Abiotic factors are non-living‚ physical factors that may influence an organism in an ecosystem 2.1.2 Define the term trophic level * The position that an organism occupies in a food chain‚ or a group of organisms in a community that occupy the same position in food chains 2.1.3 Identify and explain
Premium Ecology Food chain Photosynthesis
Chapter 27. BACTERIA & ARCHEA Overview: Prokaryotes thrive almost everywhere‚ including places too acidic‚ salty‚ cold‚ or hot for most other organisms Masters of Adaptation Most prokaryotes are microscopic‚ but what they lack in size they make up for in numbers There are more in a handful of fertile soil than the number of people who have ever lived They have an astonishing genetic diversity Prokaryotes are divided into two domains: bacteria and archaea Structural‚ functional‚ and genetic
Premium Bacteria
Microbiology is involved in many aspects of human daily life. The food eaten to the showerheads in the bathroom contain thousands of microbes. Microbiology is evident in our lives and it is reported through various media. News reports have articles about microbes just like a recent article from Times Magazine titled Overcoming Obesity by Alex Park. Park featured article is about the problem of obesity in America and how different scientists are thinking of new manners to combat this epidemic
Free Obesity Adipose tissue Bacteria
If there is any update‚ it will be posted no later than this Saturday (2/8/14) Identify the following individuals’ major contributions to science Ehrlich – magic bullet Hooke –cell theory and microscope Jenner - cowpox Lister- disinfectant (phenol) Koch- kochs postulate Lancefield- immunology to classify via serotypes Linnaeus- nomenclature Pasteur- pasteurization‚ vaccine‚ microbes in nonliving matter‚ aseptic techniques‚ fermentation. van Leeuwenhoek- described live organisms with Hooke’s microscope
Premium Bacteria DNA
Biology: Unit 1: Diversity Of Life Fungi Fungi: are multi-cellular heterotrophs that use external digestion‚ and often grow out of sight‚ underground → fungi have nothing in common with plants other then the fact that they are stationary‚ and grow in the ground. They are not photosynthetic‚ and they do not produce their own food. Characteristics/ Cell Structure: * Mesh like bodies‚ composed of branching networks of filaments called mycelium * Mycelium: a branched mass of hyphae
Premium Plant
matter Organic Matter vs. Inorganic Matter -Matter that makes up the bodies of living things generally characterized by the presence of carbon and hydrogen bonds. Most producers are green plants. 1. Autotroph i. Chemosynthetic bacteria ii. Green plants iii. Algae 2. Heterotroph i. Animals ii. Fungi iii. Protists (some) Consumers Primary consumers = {herbivores} {omnivores} secondary consumers‚ tertiary consumers etc. = {carnivores} Predator Prey Relationships: Predator:
Premium Soil Nitrogen
PATTERNS IN NATURE – Summary Notes 1. ORGANISMS ARE MADE OF CELLS THAT HAVE SIMILAR STRUCTURAL CHARACTERISTICS 1.1 Outline the historical development of the cell theory‚ in particular‚ the contributions of Robert Hooke and Robert Brown The Cell Theory states that: All living things are made of cells (Theodor Schwann & Matthias Schleiden) Cells are the basic structural and functional unit of organisms (Theodor Schwann) All cells come from pre-existing cells (Rudolf Virchow) The historical
Free Cell Eukaryote
There are many factors that are limiting the strength of our ecosystem. These factors have made many environments around the world very vulnerable. The main ecosystem I will focus on will be the habitats that tigers live in. More specifically I will focus on the effects that tigers have on their ecosystem and what would happen if tigers we to unfortunately go extinct. The tiger is one of the biggest components in its ecosystem besides for humans. Without tigers in their ecosystem their environment
Premium Tiger
MICROBIOLOGY STUDY QUESTI0NS - EXAM 1 1. Briefly discuss the theory of spontaneous generation. What scientific evidence was presented to disprove the theory? Spontaneous generation- theory (until second half of 19th century) that some forms of life can arise spontaneously from nonliving matter‚ i.e. maggots from corpses Redi (1668)- demonstrated maggots do not arise from decaying meat by filling two jars with decaying meat (one sealed‚ one unsealed). Unsealed jar developed larvae and sealed did
Premium Bacteria
kingdom? -Monera- single celled prokaryotes; bacteria. Protista- Mostly single celled eukaryotes. Fungi- Multicellular eukaryotes that feed by extracellular digestion and absorption. Plantae- Multicellular photosynthetic autotrophs; producers. Animalia- Diverse multicellular heterotrophs. 2. Who developed the binomial system of nomenclature (genus and species)? -Binomial System of Nomenclature devised by Carl Von Linne. 3. List the levels of classification beginning with kingdom and ending with species
Premium Plant Fungus Bacteria