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1. Consider a plant 20 cm tall growing in well watered soil. Ina dark and humid greenhouse, in the middle of the night, you measure the turgor pressure of aliving leaf cell of this plant using a probe inserted in the cell. You find that the turgor pressureis 1.9 MPa. Given the current conditions, what is your prediction of the osmotic potential ofthis cell?2. If you were to study a similar cell (from question 1), undersimilar environmental conditions (night, saturating humidity, turgor pressure = 1.9 MPa), foundat the top of a redwood tree on a misty night in California. How would your prediction of theosmotic potential change if you knew that the cell was located at the top of a 100 m tall tree?Explain the reason for the change in your prediction using the water potentialequation.
When glucagon binds to it is receptor on a liver cell, which one of the following sequences of events occurs to activate protein kinase A?
Which reaction releases more free energy - the removal of a phosphate group from creatine phosphate or the removal of a phosphate group from ATP.
Which micro-organism provides a gene to allow for protectionagainst an insect pest?
Approximately what percentage of the energy of glucose is transferred to storage in ATP as the result of the complete oxidation of glucose to CO and water in cellular respiration.
Are fungi gram positive or gram negative? Explain based on the structure of its cellular envelope and explain the basis for your answer in terms of specific non-informational macromolecules.
Which is true of the intermediate step of metabolism?
when discussing a patients bill of rights in class we reviewed the case of terri schiavo. her situation could have been
In a pathway controlling flower color, a functioning copy of gene A is required to produce enzyme A, which catalyzes the synthesis of red pigment.
Identify the catabolic pathways used by the following bacteria:
Which feature(s) characterize(s) meiosis from mitosis? (check all that apply)
Normal cells greatly slow their rates of cell division after filling a culture dish with a layer that is one cell deep (a monolayer).
Where on a nucleic acid is the ionizable group? What type of enzyme breaks down a polypeptide to its aminoacid monomers? How does the arrangement of microfilaments differ between a muscle cell and an epithelial cell?
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