Study Guide - SI Flashcards
Why is DNA important?
- Storage of Information
- Coding for proteins
Which statement about the central dogma theory is correct?
DNA -> mRNA -> protein
What are the 3 steps of Translation?
Initiation, Elongation, Termination
Which of the following needs a signal sequence?
Aquaporin
Which signaling system would be used if the pathway involves long distance?
Endocrine
What is the function of adenylyl cyclase?
To form cyclic AMP
What are the basic steps of Transduction?
Reception, Transduction, Amplification, Response
Where does transcription occur in prokaryotes?
Cytoplasm
What is the job of the ribosome?
To help create peptide bonds between amino acids
How is it possible for material from the rough ER be transported to the Golgi?
Because both organelles are made of phospholipids
What are the 3 ways for a cell to take in material?
- phagocytosis
- pinocytosis
- receptor-mediatd endocytosis
What triggers a phosphorylation cascade?
When the ligand binds to the receptor (at beginning)
Eukaryotic mRNA needs a 5’ cap and poly-A tail before it can lead the nucleus
TRUE
Translation occurs where
cytoplasm
Transmembrane proteins have what
both a signal sequence and a stop transfer sequence
Clathrin is an integral membrane protein that is peripheral in the rough ER
TRUE
Aminoacyl-tRNA charges tRNA & makes second messengers like adenylyl cyclase
TRUE
When ligand bind to receptor there is what happens?
A confirmation change
In a G protein, the ligand does not enter the cell
TRUE
Glycosylation
process of adding carbohydrates to proteins
Signal Sequence
is needed to target nuclear localation sequence
What is the purpose of kinase?
to phosphorylate
Lac Opern Operator does what ?
Turn it on/off
