Chapter 3.1 Flashcards
Genetic information is retrieved by
Transcription
The three dimensional structure of the protein determines its
Functional properties and enables the protein to carry out its job in the cell
Genetic information in DNA is organized in the form of
Genes
The turning on of a genes is called
Gene expression
The molecular processes that control whether gene expression occurs at a given time, in a given cell, or what level are collectively called
Gene regulation
A DNA strand consists of subunits called
Nucleotides
In deoxyribose sugar, an oxygen atom is missing at the……..end of the sugar ring
2’
What makes the DNA a mild acid
The free hydroxyl groups attached to the phosphorus atom are ionized by the loss of a proton and therefore negatively charged at cellular pH
The combination of a sugar and a base is known as
Nucleoside
DNA is a linear polymer of nucleotides linked by …………… bonds
Phosphodiester
The characteristic covalent bond that connects one nucleotide to the nest is indicated by vertical red lines that connect the……… carbon of one nucleotide to the ……..carbon of the next nucleotide in line though the ………. Phosphate group
3’
5’
5’
What give the DNA strand polarity
The Phosphodiester linkages
In the double helix, there are …….. base pairs per complete turn
10
The base pairing rule was discovered by
Chargaff
The interactions between the bases in the same strand that contribute to the stability of the double helix is called
Base stacking
