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Movement of chloride ions across the cell membrane from the the outside of nerve cells to the inside has a delta-G of about 1.1 kcal/mol even in the presence of a gradient. Why is the gradient alone not enough to get the ions into the cell? (Think about how delta-G is calculated for movement into a cell.)
a) must also take into consideration other ion concentrationsb) must also take into consideration the membrane potentialc) must also take into consideration the temperatured) must also take into consideration cotransport
The intrinsic rate of increase (r) for northern elephant seals about 0.15 (per annum). We will assume that population regulation is linearly density dependent.
Suppose that you perform fruit fly crosses with different pairs of 3-X-linked traits specified by genes x, y, and z. You observe the following frequencies of recombinant
Two aqueous urea solutions have osmotic pressures of 2.4 atm and 4.6 atm, respectively, at a certain temperature.
Tony who is not diseased has a sister with cystic fibrousis(CF). neither of his parents have (CF).tony is expecting a child with Tina.Tina's family history is unknown.what is the probability that tony is heterozygous for the CF gene? Explain your ..
What is the most possible explanation. Cultures from dialysate concentrate and the internal areas of the dialysis machines were negative; iodophor from a small in- use plastic container yielded a pure culture of P. aeruginosa. What improper method le..
Perform a chi-square test of independence for linkage between genes A and B. What is ?2, the degrees of freedom, and the p-value?
Suppose that the you are given two cultures, one of a speacies of gram-positive bacterium and one of a species of Mycobacterium.
Phosphorous is needed to synthesize the deoxyribonucleoside thriphosphates used in DNA replication. A geneticist grows some E. coli in a medium containing nonradioactive phosphorous for many generations.
Explain what DNA-bar coding is and how it is used to study the epidemiology of viral diseases caused by insect vector-virus complexes; what can be learned using this approach?
Explain afterpains and why do these occur more commonly in mulips than in primips? Why do breastfeeding moms have more after pains? What you tell a mom to expect in terms of how long she will have to have afterpains?
A beetle (0.06g), a gorilla (200kg), a gecko (5g) and a hedgehog (5g) are all kept individually in 5x5m rooms that are maintained at a constant temperature of 25 C.
Describe what you observed in your cheek smear wet mount, direct stained slide, and indirectly stained slide. What were similarities and differences. Describe what you observed in your yeast wet mount, direct stained slide, and indirectly stained sli..
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