#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: 10925
#I Life Science/ Life Sciences Group – I-V
During the second trimester of pregnancy, where is the predominant site of red blood cell production?
#Question id: 10925
#SCPH28 | Zoology
During the second trimester of pregnancy, where is the predominant site of red blood cell production?
#Question id: 10926
#I Life Science/ Life Sciences Group – I-V
Following a blood donation, red cell production begins to increase in
#Question id: 10926
#SCPH28 | Zoology
Following a blood donation, red cell production begins to increase in
#Question id: 10927
#I Life Science/ Life Sciences Group – I-V
A 62-year-old female arrives for her annual physical. She complains of itching in her hands along with headaches and vertigo. A routine complete blood count (CBC) shows red blood cells (RBCs) of 8.2 million/μl, white blood cells (WBCs) 37,000/μl, and platelets 640,000/μl. Her erythropoietin levels are lower than normal. The primary diagnosis would be