The blablabla operon produces enzymes that convert compound a into compound b. the operon is controlled by a regulatory gene s. normally, the enzymes are synthesized only in the absence of compound b. if gene s is mutated, the enzymes are synthesized in the presence and in the absence of compound b. gene s must encode a(n): inducer. coactivator. activator. corepressor. repressor.
it is mrna because rna, which stands for ribonucleic acid, is a polymeric molecule made up of one or more nucleotides. during the process known as transcription, a rna copy of a segment of dna, or messenger rna (mrna), is made. this strand of rna can then be read by a ribosome to form a protein.
the levels of ecology is organisms, populations, communities, ecosystems, and biosphere, but you can remember it by going over you notes every day and then you will slowly start to remember it and get the hang of it.
* hope this !
there would be no seasons, because seasons only appear when the sun is hitting different places. for example, winter is when the sun does not hit at all.
when the earth tilts, it receives different amounts of sunlight, so it would be the seasons.
they are both types of seismic waves produced by the sharp movement of rock within the earth.