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Q1. Scientists are studying bacteria discovered the sea floor. In the absence of light, these bacteria can use organic molecules (including human waste) to generate electricity. NASA hopes they might one day be useful in producing some electricity on a spacecraft. What mode of nutrition do these bacteria probably use?
Q2. A cell biologist cautiously measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined throughout the G2 phase of the cell cycle contained 200 units of DNA. What would be the quantity of DNA at G1 of the cell cycle in one of the grasshopper daughter cells?
what is the probability of polymorphism in a founder gruop size of 4 when there are 2 alleles of equal frequency?
Based on this data, could you help me construct a map of the genes? In addition, the data should fit a 3:1 ratio, based on a chi square analysis, does it?
You isolate a mutant plant with a defective desaturase enzyme, such that it is no longer capable of homeoviscous adaptation when temperatures drop from 37 degrees centigrade (summer in Kansas) down to 10 degrees (fall temperatures).
An enzyme has a KM of 20 µM and a Vmax of 50 mmoles/minute/µg. After exposure to an inhibitor and analysis on a Lineweaver - Burk plot the following values are obtained: -1/KM = - 0.05 liters/µmole and 1/Vmax = 0.04 (mmoles of product/minute/µg of..
q1. signals carried by hormones must eventually be terminated response continues for a limited time. examine two
You have stock solutions of 10 M KCl and 100 mM HEPES buffer, pH 7.5. You are asked to prepare a 100 mls of 100mM HEPES buffer containing 0.35 mM KCl. How would you make this buffer solution?
explain What are the genotypes of these individuals
On the other hand, vascular plants became dominant during the invasion of what type of habitat? What structures allowed them to infiltrate this new environment.
The hydrolysis of pyrophosphate to orthophosphate is in driving forward biosynthetic reactions, such as the synthesis of DNA. This hydrolytic reaction is catalyzed in E.
When a nerve fiber is polarized, the concentration of - A. sodium and potassiumions is higher on the inside of its membrane
Which of these are not properties of the stretch reflex? a) It regulates muscle length. b) It is a disynaptic reflex. c) It is activated by muscle elongation. d) Its receptor is muscle spindle.
Trace the pathway this particle would probably take while moving from outside the cell to inside. What organelles will it pass through? Where will it be located within these organelles.
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