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Glucose is pumped into some animal cells by a symporter powered by simultaneous entry of Na+. The entry of Na+ provides a free-energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+] = 143 mM, internal [Na+] =14 mM and a membrane potential = -50 mV). What is the ratio of glucose concentration outside and inside cells?
So we have Algae, Fungi, Lichens, Mosses, Ferns, Gymnosperms, Angiosperms (monocot) and Angiosperms (dicot).
Describe the significance of historical achievements in proving the role of microorganisms in human health and disease and maintaining health of the environment. Be sure to explain the current classification of microorganisms.
If you examined a microscope slide of a cell and noticed that the chromatid pairs were aligned in the center of the cell, how would you classify this stage of the cell cycle?
Suppose you analyze three phenotypes in the common fruit fly Drosophila (A,B,D). The recessive alleles causing mutant phenotypes are represented by a,b, and d.
Explain, in general terms, the role of RNA in gene expression. Why is RNA useful to a cell? What is the benefit of using RNA instead of just directly producing protein from the instructions in DNA?
Describe the gross anatomy of a typical long bone and flat bone. Indicate the locations and functions of red and yellow marrow, periosteum, and endosteum.
Compare and contrast the effect an extremely Hypotonic environment (i.e. pure water) has on a plant and animal cell.
Explain why are carcinomas more common than sarcomas? Describe your favourite new term or concept from this class in brief.
The two biochemical pathways for coat color pigment in a species of triblles are shown below. The final color of the tribble is the combination of colors produced by the two pathways.
What were the historical limitations of previous classifications systems that led to and solved by the three domain systems that is in use today?
What is the best explanation for why tracheary elements are absent in the center of many monocot roots, but present in other seed plant roots?
A profressor in a second-term calculus course wants to determine whether the year in college has any effect on the performance of his students on their final exam.
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