12 Questions
Which type of cells have no nucleus and DNA in an unbound region called the nucleoid?
Prokaryotic cells
What is the basic structural and functional unit of every organism, consisting of either prokaryotic or eukaryotic cells?
Prokaryotic cell
Which organisms consist of eukaryotic cells?
Protists, fungi, animals, and plants
What do prokaryotic cells lack when compared to eukaryotic cells?
Nucleus
What are eukaryotic cells characterized by?
Having DNA in a nucleus bounded by a membranous nuclear envelope
Where are ribosomes responsible for protein synthesis located?
In the cytosol and on the outside of the endoplasmic reticulum or nuclear envelope
What maintains the shape of the nucleus in a eukaryotic cell?
Nuclear lamina composed of protein
What organelle is responsible for most of the genetic material in a eukaryotic cell?
Nucleus
What is the general structure of a biological membrane?
A double layer of phospholipids
Where is the site of ribosomal RNA (rRNA) synthesis located in a eukaryotic cell?
Nucleolus
What partitions a eukaryotic cell into organelles?
Internal membranes
What regulates the entry and exit of molecules from the nucleus?
Pore complexes
Explore the basic features and distinctions between prokaryotic and eukaryotic cells, including their structures, functions, and the types of organisms they belong to. Learn about the plasma membrane, cytosol, chromosomes, and ribosomes that are common to all cells.
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