Bio Sat2 ch4
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Basically just DNA
The pieces of DNA in the nucleus of a cell.
- MAking an exact copy of itself
- (DNA replicates)
An enzyme that forms new strands of DNA.
- Something that directs the construction of something else.
- A DNA strand acts a template for the formation of a new complementary strand.
Non-sex body cell
One Chromosome of a pair in the body.
- The two chromosomes that make up a pair.
- a.k.a. 1a from dad 2a from mom.
- Cells that have two sets of chromosomes.
- ie. humans.
The portions of DNA that carry code for protein synthesis.
The nitrogen base in RNA as opposed to thymine in DNA.
- On strand of nitrogen bases
- RNA is single-stranded
Forming new RNA from DNA.
- RNA produces new proteins.
- Nucleotides -----> Amino Acids
THe enzyme from DNA that creates a new RNA,
- Messenger RNA.
- Carries information for protein synthesis,
- in the form of a nucleotide sequence.
- Ribosomal RNA.
- Interacts with the cell's ribosomes to make them functional.
- rRNA is the catalyst for protein synthesis;
- if there's no rRNA the the ribosomes don't work.
- Transfer RNA.
- Carries amino acids from the cytoplasm to the ribosomes during protein synthesis.
- A sequence of three amino acids.
- ex. AUG
- The dictionary for protein translation:
- A sequence read without repeating.
- Ex. AUGGCACGA:
- AUG GCA CGA
- A special region on the tRNA that can base pair with the codons on mRNA.
- The anticodon must be complementary to base pair.
THe area on the tRNA where the anticodons are.
- The organelle that synthesizes protein.
- mRNA binds to the ribosomes, and tRNA carries amino acids to it.
- The ribosome has a A-site (Amino)
- and a P-site (Peptide).
Growing peptide is attached to the ribosome at the P-site.
The next Amino acid is continually added to the A-site.
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