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Consider a simple model cell that consists of cytoplasm surrounded by a cell membrane. The cell's initial volume is 3 nL and contains 0.3 M protein and 0.2M Ca++. The cell is placed into a 500mL tank of 0.1 M calcium chloride. Neither Ca++ nor Cl- can cross the membrane.
(a) Initially is the solution, isotonic, hypertonic, or hypotonic with respect to the cells cytoplasm?(b) What occurs as the cell achieves equilibrium?(c) What is the final osmolarity of the cell and solution?(d) What is the final cell volume?(e) What average charge do the proteins have to have to maintain cellular equilibrium?
Create the process of initiation of translation, keeping in mind the molecules needed for translation. What regulates the proper positioning of the ribosome during initiation of translation?
A study was done for young adults to look at the link between taking a drivers education class and the risk of being in an automobie accident.
Frogs are extremely sensitive to acid rain. How might this information be used to investigate your observation about the trees dying in the forest.
Determine when glucagon binds its receptor there is an increase in the second messenger, cAMP. cAMP levels can be reduce by which of the following enzymes?
Suppose a hypothetical enzyme hklase is able to break down a hypothetical sugar hklose. Suppose that the synthesis of hklase is controlled by an operon.
How many RNA polymerases are present in ALL eukaryotes?
Compare changes in carbon cycle to that of the nitrogen cycle on human health. Create a conceptual graphical model for how changing the carbon cycle is likely to impact human health.
What are the steps that the musculoskeletal system goes through fro childhood to adulthood to reach 206 bones?
A wild cherry tree has 5 pairs of chromosomes in its nucleus found in a cell in the vascular cambium.Describe the appearance of the chromosomes during the metaphase stage of meiosis I and meiosis II of the megaspore mother cell.
Identify sister taxa, then larger groups that share a common ancestor. Create an phylogenetic tree showing the evolutionary relationships among these ten species.
Both endocrine and nervous systems are major regulating systems of the body; though, nervous system has been compared to an airmail delivery system and endocrine system to the pony express. In brief explain this comparison.
When you stand up from a reclining position, there is a substantial shift of bloog from the veins of the thoracic cavity to the veins of your lower extremities.
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