DNA Flashcards
DNA consists of…
Nucleotides: Deoxyribose (sugar with 5 carbons), Phosphate group, and two Nitrogenous Bases (Adenine, Thymine, Guanine, and Cytosine) bonded together by a Hydrogen Bond. GC stick together and At stick together.
The sugar in DNA is…
Deoxyribose
The sugar in RNA is…
Ribose
Watson-Crick model is…
Double-Helix
In RNA…
Thymine is replaced with Uracil
Protein Sythisis has two steps:
Transcription and Translation
In Transcription:
DNA unwinds to allow mRNA to line up a complimenting copy of the DNA.
In Translation…
mRNA is brought to ribosomes where tRNA is waiting with its Anticodons. tRNA’s anticodons attach to the Codons on the mRNA in a certain order forming peptide bonds between amino acids which string together to make proteins.
Genome:
The sum total of genetic information
Gene:
A length of DNA that encodes a particular protein
The function of one protein, or the function of a group of proteins:
Trait
Post-Transcriptional processing
Prepares the mRNA for protein synthesis by removing the non-coding sequences
Codons
Each unit of three nucleotides in mRNA
Anticodons
Each unit of three nucleotides in tRNA
tRNA is a chain of about how many nucleotides?
80
Ribosomes are a structure of
proteins and rRNA
Regulatory genes
regulate when other genes start or stop encoding proteins, which in turn produce specific traits.
Structural genes
code proteins that form organs and structural characteristics
DNA Unwinding in DNA Replication is aided by the Enzyme…
Helicase
DNA Unwinding in DNA Replication so that both strands can be replicated is aided by the Enzyme…
Helicase
The Enzyme (BLANK) moves along an unwounded strand in DNA Replication and aids in the collection of nucleotides which are complementary to the parent strand:
DNA polymerase
Mutation can occur in the DNA Replication process by:
Random error, exposure to certain chemicals, or exposure to radiation. (yeah, like in godzilla)
The genetic makeup of bacteria can be change through one of two processes:
Transduction and Transformation
Transformation:
The transfer of a DNA segment from a non-fuctional donor cell to bacteria
Transduction:
A transfer of genetic material to bacteria that is conducted by a virus that invades that bacteria (bacteriophage).