Biology Section 111: Ecological Organization & 112: Matter Cycles

nucleotide – an organic compound that consists of a sugar, a phosphate, and a nitrogenous base
FADHâ‚‚ – the reduced form of FAD; an electron-carrying molecule that functions in cellular respiration, gives up electrons to the electron transport chain
mixture – a combination of two or more substances in which each substance retains its individual characteristics and properties
gene map – diagram showing the relative locations of each known gene on a particle chromosome
protostome – An animal with a coelom that develops from solid masses of cells that arise between the digestive tube and the body wall of the embryo. The protostomes include the molluscs, annelids, and arthropods.
testosterone – An androgen hormone that stimulates an embryo to develop into a male and promotes male body features.
Organ – A group of tissues working together to perform a particular function. Heart, brain, kidney, lung, skin, etc., are examples.
Crossing over – Exchange of chromosomal segments between a pair of homologous chromosomes during prophase i of meisois.
homologous – term used to refer to chromosomes that each have a corresponding chromosome from the opposite-sex parent
controlled experiment – everything is kept the same
Impaired vision as a result of aging is called
metastasize – movement of cancer cells from one body tissue to another
Nucleoid – portion of bacterial cell interior in which the DNA is physically organized but not enclosed by a membrane
7.1.3 – State that nucleosomes help to supercoil chromosomes and help to regulate transcription. – Supercoiling condenses the DNA molecule by a factor of X 15,000
Histones are responsible for the packaging of DNA at the different levels (diagram left).
The fibre must be less condensed for transcription to occur during the interphase.
Condensing controls if the genes are transcribed or not.
bulb – type of specialized stem produced by onion plants
300. Are basic development patterns similar among all animals? – No.. They vary greatly. Sometimes the first two cells divide in unequal sizes and each cell becomes a specific part of the animal (like worms). Sometimes the first two cells are similar (like sea star)
antibody – A protein dissolved in blood plasma that attaches to a specific kind of antigen and helps counter its effects.
Impаired visiоn аs а result оf aging is called
Optic lobes – The lobes of the brain that receive signals from the receptors in the eyes
data – A collection of facts and information, usually recorded during an experiment, from which conclusions and decisions can be made.
pyruvic acid+NADH—>alcohol+CO2+NAD+ 9.1 – equation for alcoholic fermentation after glycolysis
Pores – Tiny, often microscopic openings through which small particles or small quantities of a substance can enter or exit a cell, tissue, etc.

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