AP BIOLOGY

ANIMAL REPRODUCTION AND DEVELOPMENT

ASEXUAL REPRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Single-celled organelles that do not have a nucleus or membrane-bound internal structures are called-
A
organelles
B
prokaryotes
C
eukaryotes
D
autotrophs
Explanation: 

Detailed explanation-1: -Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique evolutionary lineages. Most prokaryotes are small, single-celled organisms that have a relatively simple structure.

Detailed explanation-2: -A prokaryote is a simple, single-celled organism that lacks a nucleus and membrane-bound organelles.

Detailed explanation-3: -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-4: -In contrast, prokaryotic cells do not have any membrane-bound organelles and are always part of unicellular organisms. Both prokaryotic and eukaryotic cells have similar features, like ribosomes, genetic material, a cytoplasm, and plasma membranes.

Detailed explanation-5: -The cell types in Bacteria and Archaea are considered as “prokaryotes.” The use of the term prokaryote was first introduced as a result of electron microscope studies showing a shared simple cell structure among bacteria (Stanier & Van Niel 1962).

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