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Q1. The lethal inhalation dose of sarin for a 200 lb person has been determined to be 0.0015mg. Find out the LD50 of sarin that researchers used to compute that lethal inhalation dose.
Q2. Assume that a fox feeds only on rabbits, squirrels, mice, and seed-eating birds, all of which feed on plant material. How various square meters of plant material are then required to support the fox if the net primary productivity of the plant material is 8000 Kcal/m2/year? Imagine that the fox's daily caloric requirement is 800 Kcal, and that only 10 percent of the energy at one trophic level can be passed on to the next. If the fox were to feed only on insect-eating birds, how many square meters of plant material would be necessary?
Amino acids are synthesized from intermediates of central metabolism or the pentose phosphate pathway. What intermediates are used to synthesize each of the following?
Does anyone know how to calculate Enzyme rate? I have an AP Biology test and most of the graphs ask this type of question. Thanks!
A nutrient agar plate labeled 10^-5 mL had 154 colonies after incubation. What was the cell density in the original sample? What volume was used to inoculat this plate?
List the embryonic stages of the brain. Out of THREE, list the adult brain derivatives.
Cells form tissues and organs, which form into complex systems. What are two organs of the digestive system, Describe the difference between a food chain and a food web
What is the molarity of the drug in he Petri plates?
Proportion of Australians aged twenty-five years and over with high blood pressure, by age group, 1999-2000. Note: High blood pressure is defined as systolic blood pressure of 140 mmHg or more;
Each ATP molecule undergoes about 10,000 cycles on synthesis and hydrolysis every day. How much ATP in our body according to these observations?
Show the structure of sphingosine and indicate the relationship between sphingosine and ceramide.
What will happen to resting membrane potential if potassiumsuccinate were injected into the intracellular environment (cytoplasm) of a neuron? Explain.
what is a plate count and why would it be used instead of direct microscopic counts or turbidity measurements?
Based on this data, could construct a map of the genes? In addition, the data should fit a 3:1 ratio, based on a chi square analysis, does it?
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