1. what happens when MAP kinases are activated?
a. STAT proteins cannot enter nucleus unless they are phosphorylated
b. STAT proteins cannot enter thenucleus unless they form dimmers
c. STAT proteins cannot phosphorylate JAK proteins unless the STAT prote
1. Which of the following accurately describes a receptor tyrosine kinase?
A) It can lead to the activation of Ras.
B) It is a multi-pass transmembrane receptor.
C) It is phosphorylated on its threonine residues.
D) It can activate IP3.
2. Akt promotes th
1. The difference between transport of proteins into the nucleus and transport of proteins into
a. only one transport mechanism (nucleus or mitochondria) involves the use of vesicles
b. only one transport mechanism (nucleus or mitochondri
1. What would stop flagella on prokaryotic cells (bacteria) from moving?
a. a high concentration of protons in the mitochondrial matrix
b. a low concentration of protons in the intermembrane space
c. a high concentration of protons in the cytoplasm
1. Akt promotes the survival of many cells. It is activated by an intracellular signaling
pathway that is
triggered by an RTK that activates PI 3-kinase, as diagrammed in the following figure.
Which of the
following statements is false?
A) In the presence
1. if a cell lacked calmodulin, what would be the effect?
a. the JAK-STAT pathway could not be activated
b. Ras could not be activated
c. Calcium ion pumps in the plasma membrane would not be activated.
2. If all of the receptors on a cell bind to their l
1. Which component of the electron-transport chain is required to combine the pair of electrons
A) cytochrome c
B) cytochrome b-c1 complex
D) cytochrome c oxidase
2. Which of the following types of ion movement might b
1. If oligosaccharide protein transferase changed its location in a cell, what would the effect be?
a. the number of glycoproteins in the mitochondria would decrease
b. proteins could not be transported to the nucleus
c. the number of glycolipids would de
1. Which of the following statements about the unfolded protein response (UPR) is false?
A) Activation of the UPR results in the production of more ER membrane.
B) Activation of the UPR results in the production of more chaperone proteins.
C) Activation o
1. Dolichol is one of the many chaperones located in the ER.
2. dynamin is required for a vesicle to release from an organelle membrane, but
dynamin is not required for a vesicle to attach to a target membrane.
3. where a