Exam 3 cell and molecular

Question 1

Hydrolysis of GTP to GDP carried out by tubulin molecules

Answer 1

Allows the behavior of microtubules called dynamic instability

Question 2

The MTOC of the cell is the

Answer 2

Centrosome

Question 3

For both actin and microtubule polymerization, nucleotide hydrolysis is important for

Answer 3

Decreasing binding strength between subunits on filaments

Question 4

Drug promotes lamellipoda formation in cells the molecule is unluckily involved in the pathway that this drug affects

Answer 4

Myosin

Question 5

Pyruvate in mitochondria is next converted to __ which enters citric acid cycle

Answer 5

Acetyl CoA

Question 6

Oxidative phosphorylation accomplished in the final electron transfer event in the electron transport chain

Answer 6

O2 reduced to H2O

Question 7

Stage in break down of breakfast that generates the most ATP

Answer 7

Oxidative phosphorylation

Question 8

Cells rely exclusively on glycolysis to supply them with ATP

Answer 8

Anaerobically growing yeast

Question 9

Describe phosphorylation event that occurs during oxidative phosphorylation

Answer 9

A phosphate group is added to ADP

Question 10

Enters mitochondrion from cytosol for further conversion into compounds that enter citric acid cycle.

Answer 10

Pyruvate

Question 11

Steps/processes in aerobic respiration include production of CO2

Answer 11

Conversion of Pyruvate to acetyl CoA

Question 12

in mitochondrial electron transport protons are pumped from

Answer 12

Matrix to intermembrane space

Question 13

Protein must contain at least on stop transfer sequence

Answer 13

Plasma membrane protein

Question 14

Citric acid cycle consists of oxidation of _____ to produce ____

Answer 14

Acetate
CO2, NADH, FADH2

Question 15

Proto-oncogene is always

Answer 15

On

Question 16

Gene functions in DNA repair

Answer 16

BRCA1

Question 17

Cytoskeletal regulatory protein function likely be necessary for capturing mitotic chromosomes by spindle microtubles

Answer 17

Increasing dynamic instability of microtubules

Question 18

Cytoskeletal regulatory protein function likely be necessary for vesicular transport of synaptic components in a differentiated neuron

Answer 18

Increasing dynamic instability of microtubules

Question 19

Cytoskeletal regulatory protein function likely be necessary for The protrusion step in cell migration

Answer 19

Formation of new actin filaments networks

Question 20

Cytoskeletal regulatory protein function likely be necessary for The squeezing of the rear of a motile cell, pushing if the cellular contents forward

Answer 20

Activating myosin contractile activity

Question 21

Reduced forms

Answer 21

FADH2 and NADH

Question 22

Does not pass through Golgi apparatus

Answer 22

Chloroplast proteins

Question 23

Pathway taken by secreted proteins

Answer 23

Rough ER-> Golgi-> secretory vesicles-> cell exterior

Question 24

Where would you find ribosomes translating mRNAs that encode ribosomal proteins

Answer 24

In the cytosol

Question 25

True ab nuclear membrane

Answer 25

Nuclear membrane is thought to have arisen from the plasma membrane invaginating around the DNA

Question 26

Signal sequence that directs proteins to correct compartment are

Answer 26

Encoded in the amino acid sequence and sufficient for targeting proteins to its correct destination

Question 27

Gene that encodes growth factor receptors that when mutated no long require growth factor to activate division would be termed

Answer 27

Oncogenes

Question 28

Translation of proto-oncogene to an oncogene leads to

Answer 28

Unregulated cell division

Question 29

Genetic change that cannot convert a proto-oncogene to an oncogene

Answer 29

A mutation that introduces a stop codon immediately after the codon for the initiator methionine