Dictionary » B » Base

Base

Definition

noun, plural: bases

(1) (molecular biology) The nucleobase of a nucleotide involved in base pairing, as of a DNA or RNA polymer

(2) (anatomy) The lowest or bottom part of a plant or animal organ closest to the point of attachment

(3) (chemistry) A water-soluble compound that reacts with acid and forms salt

(4) (chemistry) A substance capable of donating a pair of electrons to an acid; substance that accepts protons (hydrogen ions)

(5) (pharmacy) Fundamental ingredient or element in medication

(6) (general) The basis of a logical thought, principle or theory

(7) (general) The lowest, supporting part of a structure or an object; foundation

(8) (general) The starting point


Supplement

Word origin: Old French base, from Latin basis, from Greek basis

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Re: Humans Natural Habitat/Optimal Environment

... when he is naked and unprotected, the temperature of his surroundings must be 82.4°F (28°C) for his metabolism to be maintained at a minimum base level, and for him to remain in thermal equilibrium.

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by Gannet
Wed Mar 05, 2014 11:31 pm
 
Forum: Evolution
Topic: Humans Natural Habitat/Optimal Environment
Replies: 2
Views: 3891

Polymorphism and Mutation

Just about numbers. A mutation is a change to a single individual that may or may not be propagated. For example a single point mutation where a base is replaced or deleted from a strand of DNA. This may cause the individual some discomfort or problems but is normally isolated to the individual. ...

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by Babybel56
Wed Mar 05, 2014 3:39 am
 
Forum: Molecular Biology
Topic: Polymorphism and Mutation
Replies: 2
Views: 1689

A question regarding PCR

... cacacacaca cacacattcg acggttgcag GCAAATACTG CCCTGTGGGG-3’ The places where primers should attach are written in capitals. My question is how many base pairs the amplified product will have, but it's not clear to me how to answer it. When the two DNA strand separate and have polymerases amplifying ...

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by x555
Sat Jan 18, 2014 11:05 am
 
Forum: Molecular Biology
Topic: A question regarding PCR
Replies: 1
Views: 1360

Fossil rabbits in the Precambrian!

... this is mainly a curiosity. So I do not really understand the "Fossil rabbits in the Precambrian!" argument. I understand it at a base level: Mammals cannot exist before the first mammal. Or basically animals cannot exist before the first animal. Easy. (Ignore the awful usage of ...

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by Steiner
Sun Dec 22, 2013 8:25 pm
 
Forum: Evolution
Topic: Fossil rabbits in the Precambrian!
Replies: 0
Views: 1832

Living or not? (viruses,viroids and prions).

... of proteins. The unusual size and gene content of the virus led one scientist to suggest that viruses could explain the origin of DNA-based life. If viruses carried all these genes, then it's possible to imagine that one could set up shop in a cell and simply never leave, gradually ...

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by Sumanth001
Sun Dec 08, 2013 12:37 pm
 
Forum: Microbiology
Topic: Living or not? (viruses,viroids and prions).
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