What is DNA?
all about that "base"
on a hunt for DNA shapes
BASE-PAIRING
CHEMICAL STRUCTURE (HARDER QUESTIONS)

100

DNA stands for......

What is deoxyribonucleic acid

100

DNA has how many nitrogenous bases?

What is four

100

DNA has a specific shape called a _____________________, which can be described as a twisted ladder.

What is a double helix

100

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

100

The type of bond that holds base pairs together is? (Hint: The weaker one)

What is a hydrogen bond

200

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

200

What is the name for the base represented by an (A)?

What is Adenine

200

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)

200

Base-pairing rules state that G always pairs with _____.

What is C (Cytosine)

200

A strand of DNA is supported by its "backbones". Which two molecules make up the backbone of DNA?

What are sugars and phosphates

300

A nucleic acid is made up of smaller units, or building blocks called_____________________.

what is nucleotide.

300

What is the name for the base represented by a (G)?

What is Guanine

300

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)

300

One strand of DNA reads GGACTTC, what is the sequence on the other, complementary strand?

What is CCTGAAG

300

The type of bond that holds the two molecules together that make up the backbone is? (Hint: Stronger one)

What is a covalent bond

400

DNA nucleotides are made up of three components:

what are sugars, phosphate and nitrogen base.

400

What is the name for the base represented by a (C)?

What is Cytosine

400

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.

400

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

400

Pyrimidines are used to describe nitrogen bases that contain how many rings? (Hint: Think pie for pyrimidine)

What is one ring

500

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

500

What is the name for the base represented by a (T)?

What is Thymine

500

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

500

Base-pairing rules state that A always pairs with ____.

What is T (Thymine)

500

Purines is the name used to describe nitrogen bases that have how many rings?

What is two