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A sample was diluted by placing a 0.1 mL aliquot into 0.9 mL of diluent,and 100mL of this dilution was pour-plated. After incubation, 217 colonies appeared. What is the CFU/mL in the original specim
The internet turns up millions of pages of speculation, but no Straight Dope. People have been removing the tongues from mammals, and each other, throughout human history. There has to be some scien
It is said that human eye can see light with wavelength approximately between 400nm and 700nm.
As far as I know the fetus is fed by the umbilical cord which basically connects his/her circulatory system with the mother's in order to supply oxygen and nutrients. But how is this possible if the
What factors determine the melting point of a fatty acid?• Chain length• The number of methylene group• The ionized state of the fatty acid• Its degree of saponification• Its
My understanding is that there are two broad categories of cilia: motile and non-motile (also called primary.Examples of the former include sperm flagella and the cilia of epithelial cells that line t
I'm 20, in about 6 months I turn 21. For some time I've been wondering whether there are natural, non-surgical and non-pharmaceutical ways that humans can continue to grow after reaching adulthood.
My understanding, that may be wrong, is that cellulose/fibre has little nutritional value to many animals because it's hard to break down thus making consumption inefficient.
Name the four groups of bio molecule and look up and report what are their special functional groups
I know you can purchase dog and cat breeds that are hypoallergenic so those who are prone to pet allergies will have reduced allergies or none at all.
Eliminate the parameter to find a Cartesian equation for the curve x = -1+3sec(t) and y = 2+3tan(t)
Give an example of phenotypic plasticity that might be triggered by an environmental cue.
What is the evidence that chordin, follistatin and noggin have overlapping, partially redundant roles in the process of neural induction
What germ layer is present in triploblasts but is absent in diploblasts
Explain the observation that segment polarity genes code for many different types of proteins while gap genes and pair-rule genes code only for one class of protein.
Peasant resistance, Discuss everyday form of peasant resistance in Mughal India? And describe briefly about the peasant resistance in Mughal India?
You would like to identify an enzyme that could potentially be used in a biosensor to detect explosives. Describe a strategy by which you would find a new microbial enzyme that is active towards the
In a randomly mating laboratory population of Drosophila, 9% of the flies have black bodies (encoded by the autosomal recessive ebonygene) rather than the wild-type tan colour. What proportion of th
Define the following concepts: a)allopatric speciation b) clade
A complex set of different specialized adaptations is needed for a bat to catch insects efficiently using ultrasound echolocation. Offer a brief general argument that such a "perfect" system could n
Briefly describe a piece of evidence supporting the theory that genome evolution involves the rearrangement of existing genes.
In a Northeastern U.S. forest, tiger salamanders were abundant. These salamanders need the humidity of the forest to survive and have a short dispersal distance when they leave the forest (less than
You go through four evolutionary mechanisms and discuss whether each is likely or unlikely to account for the change in allele frequencies: mutation, gene flow (migration), genetic drift, and natura
Ground finches feed on seeds from different sizes, in different islands from the Galapagos Archipelago. The populations have beaks of different sizes. Finches with small beaks eat small seeds, finch
Hypothetical deer population: Females prefer bigger males to mate. Thus, big males have more offspring than intermediate males. Intermediate-sized males have more offspring than small males. Small