#Question id: 1002
#Unit 1. Molecules and their Interaction Relevant to Biology
What would be the product of the transamination of the structure shown below? (The unionized forms are shown.)
#Question id: 108
#Unit 1. Molecules and their Interaction Relevant to Biology
Like plasmologens, sphingolipids are found in relative abundance in
#Question id: 30070
#Unit 7. System Physiology – Animal
Effect of catecholamines on the strength of cardiac contraction is called their:
#Question id: 10920
#Unit 6. System Physiology – Plant
The pressure-flow model, first proposed by Ernst Münch, Phloem loading at the source and phloem unloading at the sink establish the pressure gradient.
a.) In source tissues, an accumulation of sugars in the sieve elements generates a lower or negative solute potential (ψs).
b.) source tissue, causes a steep drop in the water potential (ψ), due to water potential gradient, water enters the sieve elements and causes turgor pressure (ψp ) decrease.
c.) In sink tissues, phloem unloading leads to a lower sugar concentration in the sieve elements, generating a higher or less negative solute potential.
d.) As the water potential of the phloem rises above that of the xylem, water tends to leave the phloem in response to the water potential gradient, causing a decrease in turgor pressure in the sieve elements of the sink.
Which of the following statements of sink and source tissue is FALSE?
#Question id: 29096
#Unit 8. Inheritance Biology