A female fruit fly with the recessive mutant phenotype of white eyes and miniature wings is mated with a male possessing the wild-type phenotype of red eyes and normal wings. Among the F1s, all the females are wild-type while all the males exhibit the mutant phenotype. The F2s resulting from a test cross exhibit predominantly (63%) parental phenotypes. How do you explain these results?
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1. Please discuss briefly the design and operation of batch heat sterilization of liquids. What factors affect the sterilization time of the batch system and how does a system achieve a desired level of cell destruction?
2. Is it possible to achieve absolute sterility? Explain.
3. What are the advantages of continuous over batch sterilization of liquids.
4. Explain why for the batch sterilization design is based on the number of microorganism and not on the concentration.
Cite all references.
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Allopatric, sympatric, and parapatric speciation can occur in the same location at the same time. How?
In: Biology
In: Biology
People with DiGeorge Syndrome are born without a thymus. Discuss, in detail, (250 words) the repercussions to body defense mechanisms caused by this disease.
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1.Glucose 6-phosphatase (G6Pase) catalyzes the dephosphorylation of glucose 6-phosphate (G6P). It bypasses the irreversible glycolytic reaction of glucokinase. Select the best answer that explains why G6Pase does not catalyze the reverse reaction of glucokinase.
A. G6Pase catalyzes an endergonic reaction
B. G6Pase hydrolyzes G6P
C. G6Pase requires energy from ATP to dephosphorylate G6P
D. G6Pase requires only one substrate
5. Insulin and glucagon oppositely control glucose metabolism in the liver. The former is elevated in response to a carbohydrate meal (fed state) and the latter in response to fasting. Show the overall effect of each on the pathways of glucose metabolism.
OPTIONS FOR TABLE: increase or decrease
Fed state | Fasted state | |
glucose degradation (glycolysis) | ||
glucose synthesis (gluconeogenesis) | ||
glycogen degradation | ||
glycogen synthesis |
In: Biology
In: Biology
Compare and contrast properties of conjugation in Gram-negative bacteria and Firmicutes
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How do the smith waterman and BLAST algorithm differ in terms of optimality of results and computational resources required to produce them?
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write a critical reflection on antibiotics resistant
In: Biology
In: Biology
1.) Describe the Bohr Effect and its impact on the function of hemoglobin and why it does not impact myoglobin.
2.) Predict how different mutations or variants alter hemoglobin structure might affect its function (sickle cell, fetal hemoglobin, etc.).
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Hurlers syndrome
Explain what type of genetic defect or disorder it is. Explain how this genetic anomaly occurs. Is it autosomal or sex linked? Is it dominant, recessive, or aneuploidy?
You should include what the effects are for individuals, what are the survival rates, is there a higher risk in certain populations, and any other interesting information.
genetics on a person. Latin (Colombian) female with a European (Hungary) male
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Analyze the population-balancing mechanisms that are operating among the various organisms.
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For each of the following drugs give class, and mechanism of action. Amphotericin B, Cimetidine, Mifepristone, Tamoxifen, Pravastatin, Theophylline, Valaciclovir, Glucophage, Salbutamol, Morphine, Pegvisomant, Montelukast, Cabergoline and Medroxyprogesterone.
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