GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which features do prokaryotes not have that eukaryotes do?
A
Nucleus and Genetic Information
B
Membrane-bound organelles and Genetic material
C
Cell Wall and Ribosomes
D
Membrane bound organelles and Nucleus
Explanation: 

Detailed explanation-1: -The defining characteristic feature that distinguishes between prokaryotic and eukaryotic cell is the nucleus. In prokaryotic cells, the true nucleus is absent, moreover, membrane-bound organelles are present only in eukaryotic cells.

Detailed explanation-2: -Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.

Detailed explanation-3: -Prokaryotic cells differ from eukaryotic cells in that they lack any membrane-bound organelles, including a nucleus. Instead, prokaryotic cells simply have an outer plasma membrane, DNA nucleoid structure, and ribosomes.

Detailed explanation-4: -By definition, prokaryotes lack a membrane-bound nucleus to hold their chromosomes. Instead, the chromosome of a prokaryote is found in a part of the cytoplasm called a nucleoid. Prokaryotes generally have a single circular chromosome that occupies a region of the cytoplasm called a nucleoid.

Detailed explanation-5: -In prokaryotes, DNA is found in a central area of the cell known as the nucleoid, which is not surrounded by a nuclear membrane. Thus, Prokaryotic cells do not contain membrane-bound organelles.

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