The Structure Of DNA

Question 1

Antiparallel

Answer 1

Parallel strands of DNA running in opposite directions

Question 2

Base

Answer 2

Nitrogenous a substance that is a component of a DNA molecule

Question 3

Chloroplast

Answer 3

Organelle in which the chemical reactions of photosynthesis occur

Question 4

Chromosome

Answer 4

Structure that contains the genetic material of an organism encoded into DNA

Question 5

Deoxyribose

Answer 5

Pentose sugar that is the component of a DNA molecule

Question 6

DNA

Answer 6

Deoxyribonucleic acid, A molecule that holds the genetic code and all living organisms

Question 7

Double helix

Answer 7

Three-dimensional shape of the DNA molecule

Question 8

Eukaryotic

Answer 8

A cell with a discrete Nucleus,and membrane-bound nucleus and the chromosomes are linear rather than circular, found in animals, plants and fungi

Question 9

Hydrogen bond

Answer 9

A weak Chemical link joining complimentary base pairs in DNA

Question 10

Mitochondria

Answer 10

A cell organelle in which the aerobic stages of respiration occur.

Question 11

Nucleotide

Answer 11

Component of DNA consisting of a deoxyribose sugar and phosphate group and base

Question 12

Phosphate

Answer 12

A component of DNA nucleotide that is derived from phosphoric acid.

Question 13

Plasmid

Answer 13

A circular loop of genetic material found in prokaryotic organisms and some yeasts

Question 14

Prokaryotic

Answer 14

A cell with no discrete nucleus that is not membrane bound under DNA is free in The cytoplasm

Question 15

Protein

Answer 15

Large molecule made up from a chain of amino acid is linked by peptide bonds, carbon,hydrogen, oxygen and nitrogen are used in the manufacture of proteins,they are made from subunits called amino acids

Question 16

Sugar phosphate backbone

Answer 16

Strongly bonded strand of DNA

Question 17

Globular proteins

Answer 17

Folded ball lake structures that are soluble,have weak intermolecular hydrogen bonding and are three-dimensional. Example: Amylase ( an enzyme that breaks down starch)

Question 18

Fibrous proteins

Answer 18

Have thread-like sheet structures,are insoluble and have stronger intermolecular forces of attraction. Example: collagen (found in ligaments and tendons to give tensile strength)