CELL STRUCTURES AND FUNCTION
BIO MOLECULES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
It contains the base uracil
|
|
|
It has a double helix shape
|
|
|
It contains five phosphate groups per nuclotide
|
|
|
It has a backbone of twenty different nuclotides
|
Detailed explanation-1: -Double helix, as related to genomics, is a term used to describe the physical structure of DNA. A DNA molecule is made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.
Detailed explanation-2: -Answer and Explanation: The secondary structure of DNA is best described as A) double antiparallel helical strands. The structure of DNA is a double helix, two parallel strands that are joined in the middle and twist around each other.
Detailed explanation-3: -Watson and Crick published their findings in a one-page paper, with the understated title “A Structure for Deoxyribose Nucleic Acid, ” in the British scientific weekly Nature on April 25, 1953, illustrated with a schematic drawing of the double helix by Crick’s wife, Odile.