DNA_Structure_and_Function Flashcards
DNA stands for
Deoxyribonucleic acid
What is the genetic material that carries information about an organism from one generation to the next
DNA
DNA is referred to as the ____ of life
blueprint
In eukaryotic cells, DNA is found in tightly wound structures called
chromosomes
Chromosomes are located in the
nucleus
In prokaryotic cells, DNA is found in the
cytoplasm
DNA gives instructions for
building and maintaining cells
DNA must be able to be _____ each time a cell divides
duplicated or copied
After a cell divides, each cell contains ____
identical genes
DNA looks like a _____ o spiral staircase
twisted ladder
DNA is made up of what 3 things
deoxyribose sugar, phosphate group, nitrogen base
The nitrogen bases make up the
rungs of the ladder
There are four nitrogen bases
adenine, guanine, cytosine and thymine
Adenine (A) always pairs with
thymine
Guanine (G) always pairs with
cytosine
The order of nitrogen bases determines the ____ on a chromosome
gene
Each gene is a set of instructions for making a
protein
Proteins determine your
traits
DNA ladder separates or
unzips
Free _____ pair up with nitrogen bases on each half of DNA
flow nitrogen bases
Two ____ DNA strands are formed at the end of DNA replication
new
James Watson, Francis Crick, and Maurice Wilkins were honored with a Nobel prize for
discovering DNA’s structure
Who discovered nitrogen bases
Erwin Chargaff
Who discovered DNA sprial shape, and died before receiving the nobel prize
Rosalind Franklin
Who created the model of DNA
Crick & Wilkins
The full name of DNA is
Deoxyribonucleic acid
DNA is made of deoxyribose sugar, phosphate group, and
nitrogen base
DNA is described as a
double helix
The parts of the nucleotide that make up the sides of the DNA ladder are
sugar and phosphate group
The parts of the nucleotide that make up the center of the DNA molecule are
nitrogen base
T pairs with
A
G pairs with
C
If one of the red shapes is adenine, what is the other red shape?
thymine
If one of the green shapes is cytosine, what is the other green shape?
guanine
What is the pink circle?
Phosphate group
What is the blue pentagon?
Deoxyribose sugar
What is the purple circle?
Base pair
What is inside the light blue shape?
Nucleotide
If one of the red shapes is thymine, what is the other red shape?
adenine
If one of the green shapes is guanine, what is the other red shape?
cytosine
which of these things is NOT one of the 3 parts of a nucleotide
- deoxyribose
- ribose
- phosphate group
- nitrogenous base
ribose
Which of these parts of a nucleotide make up the sides of the DNA molecule
- sugar
- phosphate group
- nitrogen base
- sugar
- phosphate group
What makes up the center of the DNA molecule
nitrogen base