DNA Structure
Sugar, phosphate and a nitrogenous base make....
Nucleotide
the outside of the DNA has 2 parts. What are they?
Sugar and Phosphate
When DNA is transcribed what does it make?
Proteins
The part of the DNA molecule that forms a tightly bonded structure is the...?
Sugar and phosphate backbone.
There are _______ chromosomes in the human body?
46
(A) adenine always bonds with
(T) thymine
the middle of the DNA has 4 different molecules called?
Nitrogenous bases
What is DNA's function?
contains the instructions needed for an organism to develop, survive and reproduce.
The order of DNA structure that codes for cell functions.
What is nitrogenous base sequence?
each human cell has how many feet of DNA?
around 6-8 feet
(C) cytosine always bonds with
(G) guanine
DNA stands for?
Deoxyribonucleic Acid
What macromolecules used as building blocks for living organisms?
Proteins
True or false- Hydrogen bonds are strong.
False
People with downs syndrome have 1 more chromosome or 1 less chromosome than others?
1 more chromosome.
In DNA the scientific name for the sugar is
deoxyribose
A-T and C-G are called_____________ _______ pairs.
complementary base
DNA is called ______________ when it is tightly coiled around histones?
What is a Chromosome?
True or false - the order of nitrogenous bases are the same for every single person.
False- everyone has a unique order of nitrogenous bases- thats what makes us all different.
True or false - Identical twins have the same genetic code.
True
The nitrogenous bases are held together by weak bonds called
DNA has 2 sides that twist around each other. this shape is called a ....
Double Helix
What is smaller - a nitrogenous base or a nucleotide?
nitrogenous base
What is smaller - a genome or a gene?
A gene
name one genetic similarity between your group mates.
- hair color
- race
- height
- eye color
- ear shape