Bacteria and archaea have

A) a nucleus.
B) histones.
C) organelles.
D) ribosomes.


Ans: D) ribosomes.

Biology & Microbiology

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Based on this diagram, which organisms evolved more recently?

a. humans and pigs b. moths c. tuna d. yeast

Biology & Microbiology

These two species of velvet walking worms are an example of:

1.Allopatric speciation 2.Sympatric speciation 3.parapatric speciation 4.Hardy-Weinberg equilibrium

Biology & Microbiology

Summarize the steps involved with the inflammatory response. What will be an ideal response?

Biology & Microbiology

Which phylum has a unique water vascular system that usually includes tube feet that can be used for movement?

a. Echinodermata b. Hemichordata c. Chordata d. Cnidaria

Biology & Microbiology