Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
20 g soil sample was added to 80 ml of water to make the final volume of 100 ml (tube A). Then, 10 ml of the ‘tube A' solution was taken and added to 90 ml of water (tube B). 1 ml of the ‘tube B' solution was taken and added to 9 ml of water (tube C). 1 ml of the ‘tube C' solution was taken and added to 99 ml of water (tube D). 10 ml of the ‘tube D' solution was taken and added to 90 ml of water (tube E). Now, 0.1 ml out of the tube C, D or E was taken and plated on agar-media plates in triplicate. The table below shows colony numbers counted, after overnight incubation.
C
D
E
TNTC (too numerous to count), 431, 378
43, 52, 33
1, 0, 6
(a) What are the fold dilutions in the tubes C, D and E against the tube A?
(b) Determine the CFU/g of soil.
(c) How many bacteria were present in 8 g of soil?
What is one way you might get bacteria of part b growing again without changing the medium. What result could be predicted if you were to transfer the bacteria of part a to the medium containing only unsaturated fatty acids without making any other ..
After WWII, DDT was widely used to kill mosquitoes. Spraying DDT was effective for some years, but despite continuous spraying at ever increasing concentrations of DDT,
At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.
On the coding strand above, indicate where you would expect FRP to bind to the DNA. In one sentence, describe why the decision makes sense.
The F1 are test-crossed to dwarf, peach fuzz, oblong plants, and 1000 test-cross progeny are produced. Estimate the phenotypes of test-cross progeny, and what number of progeny is expected in each class?
Persons who drink sufficient amounts of alcohol show rapid changes in central nervous system function, including both motor and behavioral changes,
What is the biochemical pathway that corresponds to duplicate dominant epistasis in genetics? There is a 15:1 ratio of phenotypes, there are two genes involved: A and B. but what is biochemical pathway that causes this ratio to form.
The oldest rocks on Earth date from about 4.2 billion years ago. What does this propose about the interval between 4.6 billion years ago, while the Earth started to form, and 4.2 billion years ago.
What is the connection among ribosomes, endoplasmic reticulum, golgi apparatus and the plasma membrane? How do they work together in the system.
The four phases of the disposition of a toxic compound to assess its toxicity are absorption by membranes in a system, the distribution throughout the system.
The cuckolded only benefits at the expense of cuckolded perhaps benefits are washed away by loss of paternity in his own nest.
About how long at the earliest is it likely to take before he gets feeling back in that part of thumb. Give two reasons that the wolf population is not at Hardy-Weinberg equilibrium.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd