FAQ: What Does The Base Mean In Biology?

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.

What is A base in A gene?

Bases are the part of DNA that stores information and gives DNA the ability to encode phenotype, a person’s visible traits. Adenine and guanine are purine bases. These are structures composed of a 5-sided and 6-sided ring. Cytosine and thymine are pyrimidines which are structures composed of a single six-sided ring.

What is A base in biology examples?

Examples of bases are sodium hydroxide, calcium carbonate and potassium oxide. A base is a substance that can neutralize the acid by reacting with hydrogen ions. Most bases are minerals that react with acids to form water and salts. Bases have a slippery feel and taste bitter.

What do you mean by base?

plural bases ˈbā-​səz Essential Meaning of base. 1: the bottom or lowest part of something: the part on which something rests or is supported. 2: something (such as a group of people or things) that provides support for a place, business, etc. 3: a main ingredient to which other things are added to make

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What does base pair mean in biology?

Listen to pronunciation. (bays payr) Two nitrogen-containing bases (or nucleotides) that pair together to form the structure of DNA. The four bases in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).

What is a base in biology quizlet?

base. a compound that produces hydroxide ions (OH-) in solution and measures more than 7 on the pH scale.

What bases are in RNA?

RNA consists of four nitrogenous bases: adenine, cytosine, uracil, and guanine. Uracil is a pyrimidine that is structurally similar to the thymine, another pyrimidine that is found in DNA. Like thymine, uracil can base-pair with adenine (Figure 2).

What are 5 examples of bases?

Some common strong Arrhenius bases include:

  • Potassium hydroxide (KOH)
  • Sodium hydroxide (NaOH)
  • Barium hydroxide (Ba(OH)2)
  • Caesium hydroxide (CsOH)
  • Strontium hydroxide (Sr(OH)2)
  • Calcium hydroxide (Ca(OH)2)
  • Lithium hydroxide (LiOH)
  • Rubidium hydroxide (RbOH)

What are bases in science?

base, in chemistry, any substance that in water solution is slippery to the touch, tastes bitter, changes the colour of indicators (e.g., turns red litmus paper blue), reacts with acids to form salts, and promotes certain chemical reactions (base catalysis).

Is a base an alkali?

Alkali is a base. It is a base that dissolves in water. Not all bases are alkali but all alkali is base. It is a basic salt alkali earth metal or alkali metal.

What does base mean in physics?

A base is a substance that, in aqueous solution, is slippery to the touch, tastes bitter, changes the colour of indicators, reacts with acids to form salts, and promotes certain chemical reactions.

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What part is the base?

In geometry, the bottom of a three-dimensional object is called a base – if the top of the solid is parallel to the bottom it is also called a base.

What makes a base a base?

A base is a substance that accepts hydrogen ions. When a base is dissolved in water, the balance between hydrogen ions and hydroxide ions shifts the opposite way. Because the base “soaks up” hydrogen ions, the result is a solution with more hydroxide ions than hydrogen ions. This kind of solution is alkaline.

What are the specific base pairings in DNA and RNA?

DNA and RNA bases are also held together by chemical bonds and have specific base pairing rules. In DNA/RNA base pairing, adenine (A) pairs with uracil (U), and cytosine (C) pairs with guanine (G). The conversion of DNA to mRNA occurs when an RNA polymerase makes a complementary mRNA copy of a DNA “template” sequence.

What is purine and pyrimidine bases?

Purines and pyrimidines are the nitrogen bases that hold DNA strands together through hydrogen bonds. The purines in DNA are adenine and guanine, the same as in RNA. The pyrimidines in DNA are cytosine and thymine; in RNA, they are cytosine and uracil.

What is the meaning of base pairing?

base pairing. noun. biochem the hydrogen bonding that occurs between complementary nitrogenous bases in the two polynucleotide chains of a DNA molecule.

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