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Question - Why is a Gram negative bacterium colorless but a Gram positive bacterium purple after it is rinsed with decolorizer? Answer in a few sentences.
q1. eastern tent caterpillars malacosoma americanum live in large groups in silk nests or tents which they build in
What is the possibility that - if they have a daughter - the daughter will be red-green colorblind. How several are born of each genotype.
According to Mendel's law, phenotypical characteristics are determined by pairs of factors (alleles) that separate independently in gametes. What are the main types of inheritance that are exceptions to Mendel's rules?
In a graded potential, what is the effect of cytoplasmic resistance and current leak?
What are the main ecological roles of bacteria in food chains and food webs?
Explain the difference between allopatricand sympatric speciation gene flow, reproductive isolation, genetic mutation, allele frequencies, and subpopulation. Finally, give a detailed example of how each type of speciation might occur.
A cell with a 5 percent concentration of salt in it is placed in a solution with a 15 percent concentration of salt. Imagine that the cell is permeable to water but not to salt.
Which type of transmission allows more microbes: direct or fomites? Did the Number of microbes decrease after a series of transfers between people?
Compute the molality of a solution prepared by dissolving 1.5 grams of dextrose in 1.0 liters of water.
A 10,000 kg spaceship decelerates uniformly to reduce its speed from 3,500 km/h to 1,700 km/hr in 1 s. What net force acted on this spaceship?
If genes code for proteins, where do carbohydrates and lipids comefrom? and why are carbohydrates or lipids poor candidates forserving as information carrying molecules?
For the reaction rates experiment, in the space below, record the absorbance values you obtained at 30 seconds, 1 minute, 1 1/2 minutes and at 2 minutes for 5 and 15 mls of enzyme. How does enzyme concentration influence the rate of reaction
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