Answer:
only three-fourth of states legislatures need to pass an amndment to the constitution
Answer:
E. Large molecules
Explanation:
Large molecules cannot pass through the membrane without help they are too big. This is because the membrane is very selective with what it let enters.
Answer:
Explanation:
we have three strains.
the first is the wild type which has tryptophan mRNA which gets degraded rapidly and tryptophan synthase which is stable. therefore, in the presence of tryptophan, no new mRNA is formed and whatever tryptophan synthase was present would be diluted out as cells continue to divide.
Strain A has stable mRNA and stable tryptophan synthase. so since the mRNA is present, new enzyme will continue to form from it. However, since no new mRNA is formed, the enzyme activity will get diluted as cells divide, but at a much slower rate than the wild type.
in Strain B , synthase is rapidly degraded and no new mRNA is formed. so the tryptophan synthase activity would decrease drastically.
Second one: Water expands when it freezes
Peripheral proteins are held to the membrane surface primarily through electrostatic or hydrogen bonds.
