Which structure could be found in a single-celled organism? intemal organs legs and feet outer covering large brain

A solitary called life form would have an external covering in particular. Clarification: Having a brain, legs and inner organs is excessively perplexing for a unicellular organism(organisms with one cell)

Explanation:

amber has allowed scientists to study dna that has been preserved over millions of years.

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.