#Question id: 2075
#SCPH05 I Biotechnology
The force driving simple diffusion is:
#Question id: 10906
#SCPH06 I Botany
The pressure-flow model explains phloem translocation as a flow of solution (bulk flow) driven by an osmotically generated pressure gradient between source and sink.
a) Phloem translocation, both active and passive mechanisms were considered. All theories, both active and passive, assume an energy requirement in both sources and sinks.
b) In sources, energy is necessary to move photosynthate from producing cells into the sieve elements. This movement of photosynthate is called phloem loading.
c) In sinks, energy is essential for some aspects of movement from sieve elements to sink cells, which store or metabolize the sugar. This movement of photosynthate from sieve elements to sink cells is called phloem unloading.
d) The Active mechanisms of phloem transport further assume that energy is required in the sieve elements of the path between sources and sinks simply to maintain structures.
From the given statements find out the correct for pressure-flow model.
#Question id: 10997
#I Life Science/ Life Sciences Group – I-V
A 60-year-old woman has a resting heart rate of 70 beats/min, arterial pressure is 130/85 mm Hg, and body temperature is normal. Her pressure-volume diagram of the left ventricle is shown above.
What is her cardiac output in milliliters per minute?
#Question id: 11676
#I Life Science/ Life Sciences Group – I-V
In humans, the transport epithelial cells in the ascending loop of Henle:
#Question id: 14133
#SCPH05 I Biotechnology