Biology Dictionary -AS and A-: Biology Terms and Definitions (A-Z) Biology Dictionary -AS and A-: Biology Terms and Definitions (A-Z)

Chemosynthesis process organisms manufacture food using, blog archive

Parasympathetic nervous system the part of the automatic nervous system which regulates physiological functions when the body is at rest Partially permeable membrane a membrane that is permeable to small molecules but does not allow the passage Chemosynthesis process organisms manufacture food using larger molecules Parenchyma A generalized cell or tissue in a plant which may manufacture or store food, and can often divide or differentiate into other kinds of cells.

DNA and nucleoid, for example.

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Heating this compound gives polymeric sulfur nitride SN xwhich has metallic properties even though it does not contain any metal atoms. Bacteria are used in food preparation and in environmental, chemical and mining processes. Proprionibacterium acnes — rod shaped bacterium that lives on the skin.

Phagocytosis the mechanism by which cells ingest extracellular large substances, including macromolecules, parts or totality of other cells and microorganisms Phagosome a cytosolic vacuole containing materials captured by phagocytosis, and which are destined to be destroyed.

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Root the part of the plant that goes downwards, normally into the ground, anchoring the plant and absorbing and conducting water and mineral nutrients. The terms eubacteria and archaebacteria refer to members of a single kingdom. In eukaryotic cells, when the DNA is replicated, there are as many as replication origins.

They are also naturally normally present in the human intestine. Carotid body a collection of cells found in the walls of the carotid arteries that are sensitive to the oxygen concentration and pH of blood.

Pituitary gland an endocrine gland situated at the base of the brain Pituitary hormone a hormone released from the pituitary gland.

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Uncooked white rice Brown rice will not work as well. Peptide bond an amide linkage between the carboxyl group of an amino acid and the amino group of another one which is a covalent bond, and it is formed by loss of a water molecule. Nutrient a substance that is required in the diet, e.

Prolactin a hormone secreted by anterior pituitary gland. We can think, plan, and recall events that have happened in and around our lives.

The bacterial mats are grazed by other microorganisms such as amphipods and copepods. Exotoxins are produced by Gram-positive Bacteria and are secreted into the surrounding environment. Isotopes of sulfur Sulfur has 25 known isotopesfour of which are stable: Two species of probiotics, Bifidobacterium and Lactobacillus, have been studied the most.

This can lead to side effects such as gastrointestinal upset, involving diarrhoea, wind and bloating. Oxidization is when a substance combines with oxygen to form another substance.

Digestion the breakdown of food material into simple molecules that can be absorbed by the body.

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They can only be seen with a microscope. Hydrogen sulfide is the primary energy source for hot vents and cold seeps. Normally, a substance in our bodies called interleukin IL prevents this.

Haemocoel collection of sinuses which are spaces within the body where blood is pumped to at relatively low pressure from the heart. Centrifuge a machine that separates materials of different densities by spinning them in a tube at high speed.

These reactions take place at low temperatures. There is only one replication origin original DNA strand when replication starts.

Sulfur - Wikipedia

MRSA, coccus prokaryote dividing ; causes food poisoning, toxic shock syndrome and skin and wound infections such as scalded skin syndrome, scarlet fever, erysipelas and impetigo.

Cytoplasm the contents of a cell surrounding the nucleus and enclosed by the cell surface membrane. Dicotyledon a flowering plant that produces seeds with two cotyledons.