Essay on Biology Notes

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Biodiversity- BIG IDEAS
• All living things can be classified according to their anatomical (physical appearance) and physiological (how our organs function) characteristics
• Human activities affect the diversity of living things in ecosystems

Homework Notes- Taxonomy, Classification and Binomial Nomenclature
• Classification is the grouping of organisms based on a set of criteria that helps to organize and indicate evolutionary relationships (it can also be sued to classify anything- e.g. baseball teams
• Rank is a level in a classification scheme such as phylum or order
• Taxon is a named group of organisms such as phylum Chordata or order Rodentia
• Order of Classification for Organisms: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species) (Does King Philip Come Over For Great Soup?)
Homework Notes- Domains
• There are 3 domains: Bacteria, Archaea and Eukarya. Inside the Eukarya, there are four kingdoms: Protista, fungi, plantae and animalia.
• Scientists arrived with the 3 different domains based on the diverse genetic and cellular levels. Once they had the technology, they looked at the cellular and genetic differences.
Homework Notes- Other Terms
• Dichotomous key: an identification tool consisting of a series of two-part choices that lead the user to a correct identification. It has questions: if yes, you go to the next question specified, if no, you go to the other question specified.
Determining How Species are Related
• The goal of

Notes On Biology

Membrane bound cells Cells that are surrounded by a membrane Multicellular organisms Organisms that consist of more than one cell Eukaryotes Living organisms Eukaryotic cells Multicellular cells that have complex structures. Ultra structure Cell details Organelles Parts of a cell that have specific jobs/functions Chromatin Contents of the nucleus Thylakoids A network of flattened sacs in the chloroplast Stroma Thick fluid in the chloroplast Hormones Chemical messenger molecules…

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Notes On Biology

Chapter 1 evolution Process of change that has transofmred life on Earth from its earliest beginnings to the diversity of organisms living today. biology Scientific study of life. emergent properties Due to the arrangement and interactions of parts as complexity increases. systems biology An approach that attempts to model the dynamic behavior of whole biological systems based on the study of the interactions among the system's parts. levels of biological organization…

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Notes On Biology

1. Microorganisms (1674) Microscope lens grinder Anton Van Leeuwenhoek accidentally discovers microorganisms in a drop of water. Using his own microscopes, he observes sperm, bacteria and red blood cells. His observations lay the foundation for the sciences of bacteriology and microbiology. 2. The Cell Nucleus (1831) While studying an orchid, botanist Robert Brown identifies a structure within the cells that he terms the "nucleus." 3. Archaea (1977) Carl Woese discovers bacteria are not the…

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Notes On Biology

Regulation 1. Functions for the vacuole: stores food like proteins, breaks down or stores certain wastes, and keeps the concentration of dissolved substances. How it helps the cell maintain homeostasis: Removing unwanted structural debris, isolating materials that might be harmful or a threat to the cell, maintaining an acidic internal pH, containing small molecule, and exporting unwanted substances from the cell. 2. Functions for the nucleus: stores the cell's DNA and coordinates…

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Notes On Biology

1) Order - Basis of living cells Reproduction - Producing of own kind Growth & Development - Inherited form of DNA Energy Process - Turning food to energy chemically Regulation - Regulating an organism’s habits to have a sustain lifestyle Adaptation - Working with habitats that may have generated years ago 2) Molecule - A cluster of small chemical units called atoms held by chemical bonds to help form an organelle, which is a membrane-enclosed structure that performs a specific…

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Biology Genetics Notes

Biology Genetics Notes For Mendelian Inheritance you need; traits with only two alleles true-breeding plants (produce offspring of the same variety when they self-pollinate) hybridization- mating of two contrasting true-breeding (homozygous) varieties creating the P generation. The hybrid offspring of the P generation= F1 (first fillial) generation. F1 individuals self-pollinate= F2 generation. Mendel's Four Laws 1st- variation is due to alternative versions of genes called alleles. The…

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Essay on Biology Notes

Science Chapter 1 Basic Chemistry: *Mass a anything that has mass and takes up space -All matter is composed of elements *Element -substance that cannot be broken down into simpler substances Ex: oxygen, hydrogen, and carbon -each element has a set of properties that distinguish it from others *Atom is the smallest particles of an element, basic building block of life *Atom Structure: -Nucleus: Protons= postive charge Neutrons=no charge -Surrounds nucleus: Electrons=negative…

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Essay on Biology Notes

BIOLOGY EVIDENCE OF EVOLUTION 1. Outline the impact on the evolution of plants and animals of: - changes in physical conditions in the environment - changes in chemical conditions in the environment - competition for resources Changes in the environment of living organisms can lead to the evolution of plant and animal species. These environmental changed in condition may be physical, such as temperature changes, or chemical, such as changes in water salinity. Change may also…

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Biology Notes Essay

Organic Compounds Organic Compounds All life is made from different combinations of a small set of molecules. Almost all molecules in an organism are built around carbon. Organic compound-a molecule consisting primarily of carbon and is made by cells. Carbohydrates Carbohydrates (sugars) are used for energy and can be used to create cell parts. Monosaccharides- consist of single sugar molecules. The main fuel source for cellular work. Can be turned into polysaccharides. Polysaccharides-two or more…

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Essay on biology notes

heart has 4 chambers atria: upper, recieving chambers. ventricles, send chambers. blood flow through heart. superior and inferior vena cava righty atrium tricupsid valve, right ventricle, pulmonary valve, pulmonary trunk, pulmonary arteries, lungs, pulmonary veins, left atrium, bicvuspid valve, left ventricle, aortic valve, left ventricle. heart contraction: SA node, pacemaker, blood pressure, force exerted by blood as it moves through blood vessels normal: 120/80 mm Hg systolic pressure:…

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