cell membrane is a biological membrane that separates the interior of all cells from the outside environment.
so c
Your grandfather dieing wouldn't be a reoccurring everyday problem
All nitrates are soluble, so whatever amount is not taken up by plants in a field is washed away into groundwater and, eventually, into rivers, streams, ponds, and lakes. In these bodies of water, the nitrates become sources of food for algae and other plant life, resulting in the formation of algal blooms.
A circuit, a continuous unbroken path.
Charges or current can only flow through a closed circuit
Answer:
F-: StrR, his+ and met+
Explanation:
Since it is stated that the minimal media contains Streptomycin, therefore:
a.) To be able to grow on this media, the E. coli genome must have StrR allele.
b.) Also remember that only prototrophs can grow on minimal media, thus colonies with mis+ and met+ (which are prototroph) will be the common growth .
c.) In the conjugation of F- strain with an Hfr strain, F- which contains the StrR allele do not and cannot form F+ or Hrf strains but remains F-