Non-living features and physical factors of the ecosystem
Abiotic
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An ecosystem in water.
Aquatic
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Gases such as methane and carbon dioxide which in the atmosphere cause more heat energy to be trapped, so raising the temperature at the Earth’s surface.
Greenhouse gases
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The number of samples the species is recorded in.
Frequency
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The allele that shows itself in the phenotype.
Heterozygous dominant
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The allele that does not show itself in the phenotype.
Heterozygous recessive
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Series of aerobic biochemical reactions in the matrix of mitochondria of most eukaryotic cells by which energy is obtained through the oxidation of acetylcoenzyme A produced from the breakdown of glucose.
Krebs cycle
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A plant adapted to living in dry conditions.
Xerophyte
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A pore surrounded by two guard cells, mostly in the lower epidermis of a leaf, through which gases diffuse in and out of the leaf. Matrix of a chloroplast where the light-independent reaction of photosynthesis takes place.
Stroma
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The formation of ATP by the direct transfer of a phosphate group from a reactive intermediate to ADP.
Substrate-level phosphorylation
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The formation of ATP in the electron transport system of aerobic respiration.
Oxidative phosphorylation
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An organism that lives on or in a host organism. It gains a nutritional advantage and the host is harmed in some way.
Parasite
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Selection that tends to eliminate the extremes of the phenotype range within a population. It arises when environmental conditions are constant.
Stabilising selection
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Group of individuals that share similar genes and are capable of breeding with one another to produce fertile offspring.
Species
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The process by which organisms that are better adapted to their environment survive and breed, while those that are less adapted fail to do so.
Selection
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Also known as a saprophyte, this is an organism that obtains its food from the dead or decaying remains of other organisms.
Saprobiotic microorganism
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The condition in which the effect of an allele is apparent in the phenotype of a diploid organism only in the presence of another identical allele.
Recessive allele
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Series of flattened membranous sacs in a chloroplast that contain chlorophyll and the associated molecules needed for the light-dependent reaction of photosynthesis.
Thyakoids
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A factor whose level is at the least favourable and therefore limits the rate at which the process can take place.
Limiting factor
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Term used to describe a large area of land in which only one type of crop is grown.
Monoculture
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Other cards in this set
Card 2
Front
An ecosystem in water.
Back
Aquatic
Card 3
Front
Gases such as methane and carbon dioxide which in the atmosphere cause more heat energy to be trapped, so raising the temperature at the Earth’s surface.
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