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While performing undergraduate research on the facultative aerobe Saccharomyces cerevisiae (yeast) you discover a mutant able to directly convert glyceraldehydes 3-phosphate into 3-phosphoglycerate, bypassing the formation of 1,3-bisphosphoglycerate and the need to make the enzyme glyceraldehydes 3-phosphate dehydrogenase altogether, shortening the glycolytic pathway by one whole step (much to the delight, you imagine, of future cell biology students!). However, to your surprise, you discover that your facultative aerobe is now an obligate aerobe. Explain in terms of the glycolytic steps involved why this is so.
Which membrane transport mechanism is found in eukaryotic cells.
How does aggregation occur in sickle-cell anemia? Place the steps in the correct order. Note that deoxyhemoglobin is generally in the T state; oxyhemoglobin is in the R state.
A twenty-oneyear-old woman presents with a three month history of malaise, joint pain, weight loss, and sporadic fever. Her temperature is 38°C (101°F).
ATP synthesis by chemiosmosis (electron transport pumping protons across inner membrane) both photosynthesis and respiration take place in double-membrane organelles with own DNA Q: Which is NOT a difference between C3 and C4 plants.
Determine the percentage of offspring displaying each trait. If a single, diploid G2 nucleus in an ascus contains 400 nanograms (ng) of DNA, after that a single ascospore nucleus of this species should contain how much DNA (ng), carried on how many c..
Explain the general pattern of alternation of generation in plants. Explore why the gametophyte has been reduced to a part (or parasite) of the sporophyte as plants have evolved. Present and defend your finding. Please list sources used. Write in Tim..
which changes made the most severe effect on the protein
Explain three things that a paleontologist must do to plan a fossil hunting expedition so that he is likely to find evidence to reply a specific scientific question.
Plants may be 10, 20, 30, 40, 50, 60 or 70 cm high where plant high is under polygenic control. A true-breeding plant that is 10 cm is crossed to another true-breeding plant that is 50 cm.
Animals can be classified according to their mode of thermoregulation. Sort the animals below, indicating their likely thermoregulatory strategy. Note that poikilotherms are sometimes referred to as heterotherms.
Two NotI restriction enzymes cleave DNA on opposite sides of the Dbm gene in a species of yeast. A molecular probe for Dbm detects a DNA restriction fragment of 8.5 kb in organisms that are wild type at Dbm.
Find potential benefits of genetically modified organisms. Explain one specific example of a genetically modified organism. This may be a plant or an animal and may currently be on the market, was on the market in the past
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