Test 2 Practice Flashcards
T or F: CLATHRIN is the primary coat protein utilized for endocytosis.
True
T or F: SNARE PROTEINS are responsible for vesicle function.
True
T or F: CALMODULIN is the major calcium sensor in most cell types and it binds four calcium ions
True
T or F: Pleckstrin homology domains (PH-domains) are signaling domains that recognize PHOSPHORYLATED TYROSINE.
False, PIP3
T or F: Synaptic transmission relies on SHORT-LIVED signals while endocrine signals are LONG-LIVED signals.
True
T or F: Heterotrimer G-proteins are ALWAYS activated by a seven-span receptor.
True
T or F: Peroxisomes, like MITOCHONDRIA, can import fully folded proteins or protein complexes.
False, nucleus
T or F: SYNAPTOTAGMIN is a calcium binding protein involved in neurosecretion.
True
T or F: PROSTAGLANDINS are arachidonic acid metabolites while dopamine is an amino acid derivative.
True
T or F: MG2+ is the primary second messenger generated by activated of phospholipase C-beta.
False, Ca2+
T or F: The signal for O-LINKED sugar addition is the amino acid sequence N-X-S/T.
False, N-linked
T or F: The major function of the MEDIAL Golgi is protein sorting.
False, Trans
T or F: POTASSIUM ions concentrations are kept very low in the cytoplasm.
False, calcium
T or F: The NUCLEOPLASM is topologically the same as the cytoplasm.
True
T or F: Nucleocytoplasmic transport is UNIDIRECTIONAL.
False, bidirectional
T or F: Signaling molecules that bind to intracellular receptors must be HYDROPHILIC.
False, hydrophobic
T or F: Signal patches are most appropriate for proteins that are transported while UNFOLDED.
False, folded
T or F: The OXA PROTEIN TRANSLOCATOR is critical for translocating mitochondrial genome-encoded proteins across the inner mitochondrial membrane.
True
T or F: RAB PROTEINS serve as communicators between the vesicle tethering machinery and the SNAREs.
True