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Envi. Sci. 1
| Term | Definition |
|---|---|
| Abiotic | Physical rather than biological; not derived from living organisms |
| Aerobic | Respiration carried out using oxygen |
| Antibody | A blood protein produced in response to and counteracting a specific antigen |
| Asexual | Not involving the fusion of gametes in reproduction |
| ATP | Adenosine triphosphate (C10 H16 N5 O13 P3) A nucleoside triphosphate used in cells as a coenzyme transfer, transports chemical energy within cells for metabolism |
| Biotic | Of, relating to, or resulting from living things, especially in their ecological relations |
| Biotic potential | The amount that a population would grow if there were unlimited resources present in an environment |
| Calories | The energy needed to raise the temperature of 1 gram of water through 1 degree C, The energy needed to raise the temperature of 1 kg of water through 1 degree C =1 thousand small ______, used to measure the energy value of foods |
| Cancer | A disease in which abnormal cells divide uncontrollably and destroy body tissue |
| Carrying capacity | The maximum amount of population an environment can support, usually shown as K on a graph |
| Cell membrane | The semi-permeable membrane surrounding the cytoplasm of a cell |
| Chemosynthesis | Synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the *absence of sunlight* |
| Clumped | The most common type of population dispersion, when they are grouped together Ex: Fish in a school |
| Demographers | Scientists who study human population(s) |
| DNA | Deoxyribonucleic acid, self-replicating material present in nearly all living organisms as the main constitutent of chromosomes; carrier of genetic information |
| Even/uniform | A type of population dispersion that allows distance between 2 individuals to maximize the amount of resource consumption Ex: Plants in a desert, penguins (territorial) |
| Exponential growth | "J"-shaped curve, shows what would happen to a population's amount if resources were unlimited |
| Glucose | A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates |
| Lipids | A class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents |
| Logistic growth | "S"-shaped curve, occurs when a population's growth slows or stops after a period of exponential growth, typically reaches/comes close to carrying capacity (K) |
| Melosis | Type of cell division that results in 4 daughter cells, each with half the number of chromosomes of the parent cell; gametes + plant spores production |
| Mitosis | Type of cell division resulting in 2 daughter cells, each having the same number and kind of chromosomes as parent nucleus, typically of ordinary tissue growth |
| Mutation | Evolution that generates new genetic material |
| Photosynthesis | A basic energy transformation molecular process that captures energy from the sun and turns it into carbohydrates |
| Population crash | A sudden drop in population, often after population shoots up and then reaches carrying capacity - growth too rapid, resources deplete |
| Population density | The number of individuals found in a given area; one of the factors that affect population growth |
| Population dispersion | The way in which individuals of a population are arranged, there are 3 patterns: clumped, even/uniform, and random; one of the factors that affect population growth |
| Population size | The number of individuals within a population; one of the factors that affect population growth |
| Protein | Large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues, essential to all living organisms, especially in body tissue, like muscle, hair, collagen, etc. |
| Random | A type of population dispersion where the position of each individual is not determined or influenced by other members, uncommon Ex: plants in a field/forest |
| Rule of 70 | The time it takes a population to double can be approximated by using this, or dividing 70 by the current growth rate |
| Sex ratio | The proportion of males to females; one of the factors that affect population growth |
| Sexual | Reproduction involving the fusion of gametes |
| Trophic level | The same horizontal level in a food chain that a species occupies, defines the way a species gets energy |
Created by:
ninom3000
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