#Question id: 11085
#Unit 7. System Physiology – Animal
The diagrams show changes in the partial pressures
of oxygen and carbon dioxide as blood flows from the arterial end to the venous
of the pulmonary capillaries. Which diagram best depicts the normal relationship
between Po2 (red line) and Pco2 (green line) during resting conditions?
#Question id: 1380
#Unit 4. Cell Communication and Cell Signaling
Which of the following apply to the synthesis of plant cell walls? Please select all that apply.
a) Cellulose microfibrils are formed by cellulose synthase complexes called rosettes
b) Cellulose is synthesized using cytoplasmic ATP-glucose and deposited as microfibrils directly on the outer surface of the plasma membrane.
c) Matrix polysaccharides of plant cell walls are synthesized in the Golgi apparatus and exported to the cell wall by endocytosis.
d) The direction of cellulose microfibril growth is determined by the orientation of arrays of microtubules lying just below the plasma membrane.
#Question id: 11292
#Unit 10. Ecological Principles
In an pond ecosystem the _____ is always greater than the _____ .
(a) number of primary producers . . . number of secondary consumers
(b) biomass of secondary consumers . . . biomass of primary consumer
(c) assimilation efficiency of primary consumers . . . assimilation efficiency of secondary consumers
(d) biomass of primary producers . . . biomass of primary consumers
#Question id: 20992
#Unit 12. Applied Biology
#Question id: 1254
#Unit 4. Cell Communication and Cell Signaling
An inhibitor of phosphodiesterase activity would have which of the following effects?