Appendix 1 Flashcards
Protein
A long string of amino acids. Proteins are the basic building material of organisms
Gene
A length of DNA that encodes the info for constructing a particular protein
Enzyme
a complicated protein whose action increases the probability of a specific chemical reaction
DNA
A nucleic acid that is present in the chromosomes of cells and codes hereditary info
Nucleotide
Portion of DNA or RNA molecules that is composed of a single base and the adjoining phosphate unit of the strand
What are the 4 nucleotides in DNA?
Guanine, cytosine, thymine and adenine
Hybridization
The process by which one string of nucleotides becomes linked to a complementary series of nucleotides
Chromosome
A complex of condensed strands if DNA and associated protein molecules. Chromosomes are found in the nucleus of cells
Eukaryotes
Any organism whose cells have the genetic material contained within a nuclear envelope
Cell nucleus
The spherical central structure of a cell that contains the chromosomes.
RNA
A nucleic acid that implements info found in DNA
What are the 4 nucleotides used in RNA?
Guanine, cytosine, adenine, and uracil
Transcription
Construction of a specific string of RNA nucleotides that are complementary to the exposed strand of DNA. The resulting message (transcript) us used to translate the DNA code into protein molecules
Messenger RNA (mRNA) or transcript
Strand of RNA that carries the code of a section of a DNA strand to the cytoplasm where proteins are assembled
Ribosomes
Organelle that attach to and read the sequence of RNA nucleotides to build protein molecules.