BIOLOGY
CLASSIFICATION OF VITAMINS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea. Prokaryotic cells are much smaller than eukaryotic cells, have no nucleus, and lack organelles. All prokaryotic cells are encased by a cell wall.
Detailed explanation-2: -Bacteria are prokaryotes, lacking well-defined nuclei and membrane-bound organelles, and with chromosomes composed of a single closed DNA circle.
Detailed explanation-3: -Bacteria do not have a nucleus. Since the nucleus contains DNA, it can be concluded that bacteria do not contain DNA.
Detailed explanation-4: -Hint: Prokaryotes are organisms that lack the true nucleus because they do not contain an envelope surrounding the nuclear membrane.
Detailed explanation-5: -Two basic cell types include the eukaryotic and the prokaryotic cell. Eukaryotes, such as plants and animals, possess a membrane-bound nucleus. Prokaryotes, like bacteria, have a nucleoid region that is not enclosed by a membrane; in other words, they have no nucleus.