Holt Mcdougal Biology Chapter 3

smut – A type of fungus that causes plant disease.
If the results of a scientific experiment are accurate and reliable, they are considered… – valid.
mitosis – part of eukaryotic cell division during which the cell nucleus divides
Recommended Dietary Allowance (RDA) – A recommendation for daily nutrient intake established by nutritionists.
nucleus – structure that contains the cell's genetic material in the form of DNA
external fertilization – The fusion of gametes that parents have discharged into the environment.
gel electrophoresis – A technique for separating and purifying macromolecules, either DNAs or proteins. A mixture of the macromolecules is placed on a gel between a positively charged electrode and a negatively charged one. Negative charges on the molecules are attracted to the positive electrode, and the molecules migrate toward that electrode. The molecules separate in the gel according to their rates of migration, which is mostly determined by their size.
major histocompatibility compex (MHC) – Binds to a fragment of an antigen within a cell and presents it on the surface of the membrane.
phospholipid – A lipid made up of a glyerol joined to two fatty acids and a phosphate group; has two hydrophobic tails and a polar, hydrophilic head
malnutrition – A failure to obtain adequate nutrition.
________________ is the term used for chemical reactions that use simple compounds to create complex ones and generally uses energy.
Mitochondrion – Membrane-bound organelle that converts fuel into energy available to the rest of the cell.
auditory nerve – transmits signals to the brain
gonad – The organ that produces gametes; reproductive organ.
Cellular respiration – The process by which cells generate ATP through a series of redox (chemical) reactions
Phosphorylation – the addition of a phosphate group onto a molecule
________________ is the term used fоr chemicаl reаctiоns thаt use simple cоmpounds to create complex ones and generally uses energy.
Ecology – the branch of biology concerned with the relations between organisms and their environment
How many molecules of ATP are produced in the entire breakdown of glucose? – 36

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