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Which best describes an ecological community? a.intraspecific competition of members of a brook trout population inhabiting a stream during a given year, b. interactions of all plant and animal species inhabiting a 2 hectare section of forest, c. material cycling and energy tranformations between biotic and abiotic compounds of an open meadow, d. various species of barnacles competing for resources in an intertidal zone or e. interactions of various plant and animal species in one park , excepting the decomposers?
A linear fragment of DNA that is twenty-two Kb is cleaved with the individual restriction enzymes SalI, HindIII and KpnI and then in the pair wise combinations listed below.
The genes A and B are on one chromosome, 30 cM apart. The genes C and D are on another chromosome, 20 cM apart. The genes E and F are on a third chromosome, 10 cM apart.
why does the human body need energy? what forms of energy does the body require?
During translation, the mechanism of accommodation is used to select against incorrect aminoacyl-tRNAs.
What are some examples of chromosome deletions that have been documented in humans?Find out examples of how chromosomal inversion.
Mating between black rats of identical genotype produced offspring as follows: 14 cream colored, 47 black, and nineteen albino.
what are some substances that move through the membrane through facilitated diffusion? what properties do they have in common?
A major evolutionary trend among plants is: A reduction in size of the gametophyte and an increase in size of the sporophyte. A reduction in size of the sporophyte and an increase in size of gametophyte.
A bacteria has the following lac operon genes located on the chromosome: I+P-Z-Y-A+. On a plasmid, this same bacterial cell has the lac genes I-P+Z-Y+A-. a) Which Lac proteins will be made? b) What type of protein expression (induced or constituit..
In clinical applications of API 20 E Identification System for Enterobacteriaceae and Other gram-negative rods, reagents are added only if the glucose (oxidation/fermentation) test results is yellow or at least three other tests are positive.
An equilibrium mixture of propanoic acid, and its conjugate base has a pH of 4.87. Draw the form that predominates after H3O+ is removed from the equilibrium mixture. The pKa of propanoic acid is 4.87. Draw the strucural formula with any appropria..
Assume you were given a tube having 1 ml of frozen Staphylococcus epidermidis culture known to contain 5.3 x 103 bacteria/ml. You were told to thaw it by heating at 80°C for 20 min,
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