Are larger cells with membrane-bounded organelles. prokaryotes eukaryotes

Eukaryotes

Explanation:

Eukaryotes are all animals, plants and fungi. The unicellear protists also have eukaryotic or true cells.

Eukaryotes are any of the single celled or multicellular organisms whose cells have at least one distinct nucleus. The cells are enclosed within a membrane.

Eukaryotes are an advancement over the prokaryotes whose cells are quite primitive in nature. Prokaryotes are a group of organisms characterised by absence of membrane bound organelles and a true nucleus.

Examples of prokaryotes are the archae and the bacteria.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.