Question

station 4: prokaryotes
do prokaryotes have a nucleus? y/n?
what is a nucleoid?
prokaryotes evolved approximately __________ years ago.
prokaryotes are (circle one) smaller | bigger than eukaryotes, at about ____ μm (microns).
prokaryotes are always __________.
label the following parts of the prokaryotic cell: cell wall, plasma membrane, cytoplasm, ribosomes, nucleoid.

Explanation:

Prokaryotes are single - celled organisms without a membrane - bound nucleus. A nucleoid is the region in a prokaryotic cell where the genetic material (DNA) is concentrated. They evolved about 3.5 billion years ago, are smaller than eukaryotes (about 0.1 - 5.0 µm), and are unicellular. The cell wall is the outer - most layer, the plasma membrane is just inside the cell wall, the cytoplasm fills the cell interior, ribosomes are small structures for protein synthesis, and the nucleoid is the area with the DNA.

Answer:

What is a nucleoid?: The region in a prokaryotic cell containing the genetic material (DNA).
Prokaryotes evolved approximately: 3.5 billion
Prokaryotes are (circle one) smaller | bigger than eukaryotes, at about: 0.1 - 5.0
Prokaryotes are always: Unicellular
Labeling (from outer - most to inner): Cell wall (outer - most layer), Plasma membrane (just inside cell wall), Cytoplasm (fills cell interior), Ribosomes (small structures throughout cytoplasm), Nucleoid (area with DNA in the cell interior)