BIOL 2130 Lecture Notes - Lecture 11: Nephron, Respiratory Tract, Muscle Tissue

25 views3 pages
28 Mar 2017
Types of RNA
Transfer RNA (tRNA)
oTransfers appropriate amino acids to the ribosome for building the protein
Ribosomal RNA (rRNA)
oHelps form the ribosomes where proteins are built
Messenger RNA (mRNA)
oCarries the instructions for building a protein from the nucleus to the
Protein synthesis involves two major phases:
Protein Synthesis
oTransfer of information from DNA’s base sequence to the complementary
base sequence of mRNA
oOnly DNA and mRNA are involved
oTriplets are the three-base sequence specifying a particular amino acid on
the DNA gene
oCodons are the corresponding three-base sequences on mRNA
Example of transcription:
oDNA triplets AAT-CGT-TCG
omRNA codons UUA-GCA-AGC
oBase sequence of nucleic acid is translated to an amino acid sequence
oAmino acids are the building blocks of proteins
omRNA leaves nucleus and attaches to ribosome, and translation begins
oIncoming tRNA recognizes a complementary mRNA codon calling for its
amino acid by binding via its anticodon to the codon
oAs the ribosome moves along the mRNA, a new amino acid is added to the
growing protein chain
oReleased tRNA reenters the cytoplasmic pool, ready to be recharged with a
new amino acid.
Body Tissues
oGroups of cells with similar structure and function
oFour primary types:
Epithelial tissue (epithelium)
Connective tissue
Muscle tissue
find more resources at
find more resources at
Unlock document

This preview shows page 1 of the document.
Unlock all 3 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.