What forms the “steps of the ladder” in a DNA molecule?
the rungs of the ladder are composed of pairs of nitrogenous bases (base pairs)
Oops!
Check
Okay!
Check
15
What is the difference between chromatin and chromosomes?
Chromatin is the DNA and proteins that make up a chromosome. Chromosomes are the separate pieces of DNA in a cell.
Oops!
Check
Okay!
Check
10
DNA contains the instructions for building which type of macromolecule?
DNA is a double stranded helical macromolecule that contains the instructions for creating RNA molecules, peptides, and proteins
Oops!
Check
Okay!
Check
15
What are introns?
Introns are nucleotide sequences in DNA and RNA that do not directly code for proteins - opposite of exons
Oops!
Check
Okay!
Check
25
What's the difference between DNA and RNA?
RNA is single strand, DNA is double strand.DNA has four nitrogen bases adenine, thymine, cytosine, and guanine and for RNA instead of thymine, it has uracil
Oops!
Check
Okay!
Check
10
What is transformation?
Transformation is a process by which foreign genetic material is taken up by a cell. The process results in a stable genetic change within the transformed cell.
Oops!
Check
Okay!
Check
25
What are the building blocks of DNA?
adenine (A), cytosine (C), guanine (G), and thymine (T)
Oops!
Check
Okay!
Check
25
What are histones?
A histone is a protein that provides structural support for a chromosome
Oops!
Check
Okay!
Check
10
What role did Rosalind Franklin and James Watson & Francis Crick play in our understanding of DNA’s structure?
Rosalind Franklin discovered the density of DNA and, more importantly, established that the molecule existed in a helical conformation.
Oops!
Check
Okay!
Check
20
What is the job of a tRNA molecule?
bring the amino acids and place them in the correct potsition to create the desired protein