DNA Flashcards
How is DNA stored in Eukaryotic cells?
Linear DNA molecules exist as chromosomes found in the nucleus
What is the DNA molecule like in Eukaryotic cells?
Very long so wound around proteins called histones so it can’t fit into the nucleus
What do histone proteins do?
Help support the DNA
What is the DNA like in prokaryotic cells?
Condensed to fit into cell by supercoiling
How is DNA stored in prokaryotic cells?
Carried as chromosomes
DNA molecules are shorter and circular than in eukaryotic cells
What do eukaryotic cells include?
Animal and plant cells
What do prokaryotic cells include?
Bacteria
Are hydrogen bonds present in DNA?
Yes
How many polynucleotide strands are in a DNA molecule?
2
Are hydrogen bonds present in mRNA?
No
How many polynucleotide strands are in a mRNA molecule?
1
Are hydrogen bonds present in tRNA?
Yes
How many polynucleotide strands are there in a tRNA molecule?
1
What bases are found in DNA?
Adenine
Thymine
Cytosine
Guanine
Which bases pair with each other in DNA?
Adenine and Thymine
Cytosine and Guanine