What molecules bind to G-proteins to make them activated/inactivated
GTP, GDP
200
Pathways involving IP3 and DAG as secondary messangers lead to the release of _______ ions
Calcium
200
A cleavage furrow forms from a contracting ring of microfilaments during this phases of mitosis
Cytokinesis
200
During meiosis I, _________ chromosomes separate and the chromosome number is reduced by half
Homologous
300
Region of high H+ concentration during the Light Reactions
Thylakoid space
300
This type of receptor attaches phosphates to tyrosines in order to trigger multiple signal transduction pathways
Receptor Tyrosine Kinases
300
______________ are large relay proteins to which other relay proteins are attached
Scaffolding proteins
300
During this phase of mitosis, the nucleoli disappears
Prophase
300
Males produce four "cheap" sperm cells while females produce one mature _______
Oocyte
400
Describe the mechanism of photosynthesis in C4 and CAM plants. Give an example of a CAM plant.
C4: Carbon fixation which conserves water by closing its stomata during hot/dry seasons; first CO2 into a 4-Carbon compound
CAM: Conserve water by only opening stomata and admitting CO2 at night; CO2 is fixed to a 4-Carbon compound at night and released into Calvin cycle during the day; pineapples, cacti
400
An activated hormone-receptor complex can act as a ___________, turning on specific genes
Transcription factor
400
Adenylyl cyclase is an enzyme in the plasma membrane that converts ______ to _______
ATP, cAMP
400
What are the two phases a cell can aswer after the G1 checkpoint?
G0, S
400
Nonsister chromatids join at a _______, the site of attachment and crossing over