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Q1. A red blood cell must squeeze through narrow blood capillaries without rupturing its membrane. The strength and flexibility of its plasma membrane depends on the dense cytoskeletal network that consists mainly of actin and spectrin molecules. A blood sample was analyzed to measure the intracellular actin concentration. Out of 10^10 red blood cells counted, 1 mg of actin was purified. Estimate the estimated millimolar concentration of actin in a red blood cell (the average volume of a red blood cell is 100 femtolitres and the actin coding DNA sequence is 1131 base pairs long). Calculations must be made assuming that the minimum significant number has four significant digits.
Q2. If all of phosphorus in a 3.00 gram sample of MgNH4PO4 is extracted and used to make a diphosphorus pentaoxide, what mass of P2O5 could be produced?
For each of the following anticodon sequences, identify the codon sequence to which it could potentially pair using third base wobble.
To make up a solution of phosphate buffered saline, you need 5mM Na2HPO4 (anhydrous) (FW: 141.96), 0.15 M NaCl (FW: 58.44), and 1 mM KH2PO4
What is the function of electron transport.
Look in the text under Direct Reversal of Damage. Why do we have to incubate the plates in the da
Without oxygen, cellular respiration grinds to a standstill, although glycolysis can continue to make some ATP anaerobically for a short time. While oxygen runs out, why does electron transport stop? Why do you thing the Krebs cycle stops.
Describe and illustrate with an homeostatic imbalance the relationship of the digestive organs to the peritoneum?
q1. a man heterozygous for a disease gene d is also heterozygous for an rflp linked at the distance of 4 map units from
Why are upper respiratory tract infections milder compared to lower respiratory tract infections?
q1. mr. and mrs. lehman have sought genetic counselling. mrs. lehman is concerned since she is unexpectantly pregnant
What is hematocrit? If the hematocrit decreased from the normal range, and would this decreased potentially dangerous?
In lecture we discussed plants transitioning from water to land, thus pretend you were this plant clearly identify at least theree things you need to survive on land.
Such a condition is frequently accompanied by diarrhea, which causes a loss of body water. On the basis of what you have learned about osmotic water flows, describe why diarrhea may occur.
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