Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Concept explainers

Structure and Composition of Cell Membrane
Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasm…
Cell Membrane
The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for c…
Prokaryotes vs Eukaryotes
The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.
Question

Identify the correct statement about the ribosomes of prokaryotic and eukaryotic cells.

  1. prokaryotic cells always contain only 40s and 60s subunits
  2. prokaryotic cells may contain 30s, 40s, 50s, and 60s subunits
  3. eukaryotic cells always contain only 40s and 60s subunits
  4. eukaryotic cells may contain 30s, 40s, 50s, and 60s subunits
  5. eukaryotic cells always contain only 30s and 50s subunits
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