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You have two flasks with borth media. One contains a species of cyanobacteria. The other flask contains E. coli. Both flasks are sealed and incuabated under optimal growth conditions for two days. Assuming the cell volume and metabolic rate of the bacterial cells is identical in each flask, why would the carbon dioxide concentration to be higher in the E. coli flask than in the cyanobacteria flask after the two-day incubation.
A signalling pathway in the cell is turned on by phosphorylation, leading to decreases in cell division. What is the effect of a mutation that results in the overexpression of an oncogene coding for a phosphatase that works on this pathway?
Let us say that you are working with microtubules. You have attached kinesin (the standard type) dimers to a glass slide and have added complete microtubules to the slide along with ATP. Your kinesins are lined up well enough that you can see the ..
These items are to be examined under a microscope. Sketch the following given specimen: gametophyte/ sporphyte, Closeup of sporangia.
While a tall homozygous plant was crossed with a short homozygous plant, the F1 offspring were all tall. No short plants were present in the F1 generation. Which principle does this situation represent.
In humans the hairless locus codes for a follicular protein found associated with normal hair development. The normal allele at this locus is denoted with B. A recessive allele b is associated with reduced hair density and increased hair loss in B..
Why is it important that signal transduction mechanisms use internal signals that have a rapid turnover rate?
Define imperfect adaptation and provide an anatomical or molecular example and explain why it is a case of imperfect adaption.
you have 0.05mL of an undiluted culture at a concentration of 3.6 X 10^6 CFU/mL. You then add 4.95mL sterile diluent. What is the dilution, and what is the final concentration of cells?
Mark all key innovation of Spermatophyta over their ancestors (synapomophy).
Discuss the present technological hurdles for energy efficient production of bioethanol from lingo-cellulosic biomass and biodiesel from oilseeds and algae.
Eubacterial species are known to possess the ability to fix atmospheric nitrogen.
What is the name for undifferentiated cells that are both capable of self-renewal (production of more cells like themselves) and multipotent, that is capable of differentiating into two or more mature cell types?
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