#Question id: 11549
#Unit 7. System Physiology – Animal
If a biochemist discovers a new molecule, which of the
following pieces of data would allow her to draw the conclusion that the
molecule is a steroid hormone?
I) The molecule is lipid soluble.
II) The molecule is derived from a series of steps
beginning with cholesterol.
III) The molecule acts at a target tissue some
distance from where it is produced.
IV) The molecule uses a transport protein when in an aqueous solution such as blood.
#Question id: 12475
#Unit 10. Ecological Principles
#Question id: 1225
#Unit 4. Cell Communication and Cell Signaling
The dissociation constant Kd for a receptor-ligand complex is
a. a measure of the affinity of the receptor for the ligand.
b. the concentration of the ligand at which half of the receptors contain bound ligand.
c. a measure of the time it takes for a ligand to be converted to a product.
d. equal to koff/kon
#Question id: 10454
#Unit 6. System Physiology – Plant
Arabidopsis mutants impaired in the chloroplast avoidance response with the help of PHOT1/PHOT2 led to the identification of a novel F-actin-binding protein known as
#Question id: 15785
#Unit 5. Developmental Biology