Kindly see answers below:
1. operon is not transcribe• b.) lac operon: lactose absent• e.) trp operon: tryptophan present2. operon is transcribed, but not sped up by the positive control• a.) trp operon: tryphophan absent• d.) lac operon: lactose present, glucose present3. operon is transcribed quicklu through positive control• c.) lac operon: lactose present, glocuse absent
Answer:
When a macromolecule contains repeated similar sub units of a particular molecule:such a repeated units are called polymers.
Therefore, polyethylene is a micromolecule of repeated subunits called ethylene formed during polymerization..Therefore, the small units joined together to form polyethylene are ethylene.These are alkene hydrocarbons,which are similar in structure with the carbon atoms linked by double bonds.When the Pi bonds of the double bonds breaks. hydrogen atoms forms free covalents bonds in all these sub units.
However, polypeptides is made of of 20 different amino acids, connected by peptides, disulfide and other bonds.Therefore the protein molecules will be different from the polyethylene and polymers. This is because each of the 20 amino acids has different R-groups, and It is this R-groups that determine the functional characteristics displayed by each amino acid sub- units.Therefore, the characteristics of a protein molecule will be determine by the type of Amino acids it contains.
Thus the beads of polyethylene will be the same, but different in proteins
Explanation:
A clean-up kit
A clean-up kit is a set of equipment
that is designed for cleaning purposes such as removal of dirts, stains, or
impurities. A clean-up kit contains equipment such as gloves, absorbent pads,
face shield, shoe covers, trash bags and disposable apron and gown which are
required for cleaning. For the question given above, the assistant should use a
clean up kit to remove and dispose the liquid.
The correct answer is option D, Speciation
In the allopatric speciation, the geographical barriers such as mountains or rivers causes isolation of the population. The two population groups get completely separate from each other and thus develop different sexual preferences for mating.
