Examlex
When did Prokaryotes first appear?
Archaea
A category of unicellular microorganisms that are genetically different from bacteria and eukaryotes, typically thriving in harsh conditions.
Prokaryotes
Single-celled organisms that lack a membrane-bound nucleus and other organelles.
Eukaryotes
Beings that have cells which include a nucleus and different organelles, all surrounded by membranes.
Lac Operon
A group of genes in bacteria controlled by a single promoter, involved in lactose metabolism and regulation of gene expression.
Q8: Mutations in DNA found in which cells
Q12: Adaptations by hominins include using tools and
Q14: Primitive Old World monkeys from the mid-
Q22: Among all primates,what do humans have?<br>A)the largest
Q29: Now-fossilized foraminifera with shells enriched in 18O
Q32: There is a well-documented fossil record of
Q39: About when do apes first appear in
Q41: What do the forces of evolution include?<br>A)gene
Q46: Brain enlargement in the genus Homo,coupled with
Q46: What time period does the Oldowan Complex