FREE BIOLOGY AND STUDY GAMES ABOUT DNA

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FREE BIOLOGY AND STUDY GAMES ABOUT DNA

VOCABULARY LIST EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -16 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: chromosome

Answer:

any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing size and X and Y for the female and male sex chromosomes respectively.

Question 2: double helix

Answer:

the form of the molecular structure of DNA, consisting of two helical polynucleotide chains linked by hydrogen bonds and coiled around the same axis

Question 3: base pair

Answer:

hydrogen bonds that form links between sugar phosphates

Question 4: nitrogen bases

Answer:

a nitrogen-containing organic compound that has the chemical properties of a base, especially a pyrimidine or purine

Question 5: molecule

Answer:

the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.

Question 6: thymine

Answer:

a pyrimidine base, C 5 H 6 N 2 O 2 , that is one of the principal components of DNA, in which it is paired

with adenine. Symbol: T

Question 7: deoxyribose

Answer:

any of certain carbohydrates derived from ribose by the replacement of a hydroxyl group with a hydrogen atom.

Question 8: nucleotide

Answer:

a compound consisting of a nucleoside linked to phosphoric acid. Nucleic acids are made up of long chains (polynucleotides) of such compounds

Question 9: guanine

Answer:

a purine base, C 5 H 5 N 5 O, that is a fundamental constituent of DNA and RNA, in which it forms base pairs with cytosine

Question 10: inheritance

Answer:

something that is or may be inherited; property passing at the owner's death to the heir or those entitled to succeed; legacy.

Question 11: polymer

Answer:

a compound of high molecular weight derived either by the addition of many smaller molecules

Question 12: hydrogen bond

Answer:

a type of chemical bond in which a hydrogen atom that has a covalent link with one of the electronegative atoms

Question 13: nucleic acid

Answer:

any of a group of complex compounds with a high molecular weight that are vital constituents of all living cells

Question 14: cytosine

Answer:

a pyrimidine base, C 4 H 5 N 3 O, that is one of the fundamental components of DNA and RNA, in

which it forms a base pair with guanine. Symbol: C

Question 15: adenine

Answer:

a purine base, C 5 H 5 N 5 , one of the fundamental components of nucleic acids, as DNA, in which it forms a base pair with thymine, and RNA, in which it pairs with uracil. Symbol: A

Question 16: monomer

Answer:

a molecule of low molecular weight capable of reacting with identical or different molecules of low molecular weight to form a polymer.