Consider the following definition: "A cell is the smallest unit of an organism capable of independent functioning, composed of a membrane, enclosing a nucleus, cytoplasm and inanimate matter." Which of the following phrases best criticized this definition?

Human cells die apart from the body that supports them

Answer: The phrase composed of cell membrane criticized the definition.

Explanation:

Not all cells are composed of membrane. Eukaryotes cell are composed of membrane while prokaryotic cells are no composed of membrane.

Prokaryotes are unicellular organism that lack internal membrane bound structures and organelles. They lack nucleus and have single chromosome located in the nucleoid area of the cell But Eukaryotes have nucleus.

Answer: The phrase 'composed of a membrane' best critized the definition

Explanation:

Not all cells are composed of membranes. Prokaryotic cells are found in unicellular organisms, they are with a single chromosome, no nuclear envelope, no membrane-bounded organelles.

Thus, the absence of membrane in the organelles of Prokaryotes like bacteria and cyanobacteria, invalidates and also critized the above definition.