What is DNA?
DNA stands for......
What is deoxyribonucleic acid
DNA has how many nitrogenous bases?
What is four
DNA has a specific shape called a _____________________, which can be described as a twisted ladder.
What is a double helix
If one side of a strand of DNA reads ATCGA, use the base-pair rules to come up with the sequence on the other, complementary strand of the same DNA. (Complementary means matching)
What is TAGCT Because... A=T T=A C=G G=C A=T
The type of bond that holds base pairs together is? (Hint: The weaker one)
What is a hydrogen bond
DNA is which of the following organic molecules? A)LIPID B) A CARBOHYDRATE C) A PROTEIN D) A NUCLEIC ACID
What is a nucleic acid
What is the name for the base represented by an (A)?
What is Adenine
True/False: DNA exists normally in your cells as a single-strand of nucleotides, having one backbone connected to nitrogenous bases.
What is False (DNA is double-stranded)
Base-pairing rules state that G always pairs with _____.
What is C (Cytosine)
A strand of DNA is supported by its "backbones". Which two molecules make up the backbone of DNA?
What are sugars and phosphates
A nucleic acid is made up of smaller units, or building blocks called_____________________.
what is nucleotide.
What is the name for the base represented by a (G)?
What is Guanine
Thinking back to the twisted ladder analogy, what do the sides of the ladder represent?
What are the backbones of DNA (made up of sugars and phosphates)
One strand of DNA reads GGACTTC, what is the sequence on the other, complementary strand?
What is CCTGAAG
The type of bond that holds the two molecules together that make up the backbone is? (Hint: Stronger one)
What is a covalent bond
DNA nucleotides are made up of three components:
what are sugars, phosphate and nitrogen base.
What is the name for the base represented by a (C)?
What is Cytosine
What is the name of the scientist who extracted DNA from certain cells, took x-ray photographs of it, and saw an x-shaped picture?
Who is Rosalind Franklin.
Before anybody knew what the structure of DNA was, or even that bases paired up with each other, we only knew that there were sugars, phosphates, and the nitrogen bases A,G,C, and T in a DNA molecule. The name of the scientist who discovered that the % A equals the % T, and the % G equals the % C was? (Fact used to support the base-pair rules)
Who is Chargaff
Pyrimidines are used to describe nitrogen bases that contain how many rings? (Hint: Think pie for pyrimidine)
What is one ring
The sugar in DNA is made up of 5 carbons, what is the specific name for this 5-carbon sugar in DNA? (Hint: the D in DNA)
What is deoxyribose
What is the name for the base represented by a (T)?
What is Thymine
What were the names of the two scientists who first modeled the structure of a DNA molecule as a twisted, double-helix shape.
Who are Watson & Crick
Base-pairing rules state that A always pairs with ____.
What is T (Thymine)
Purines is the name used to describe nitrogen bases that have how many rings?
What is two