Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old. These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity. What domain do these prokaryotes belong to?
A. Protists
B. Eukarya
C. Protoctista
D. Archaea
E. Archetista
Answer: D
You might also like to view...
Plants transport water to their leaves through the xylem when water evaporates from the leaves. The evaporating water pulls other water molecules up the xylem through ____
A. Hydrophobic interactions B. Ionic bonds C. Covalent bonds D. Hydrogen bonds
All commercially produced bananas are seedless because the plants that bear them are ____
a. triploid b. haploid c. treated with colchicine d. lacking ovaries e. grown by tissue culture propagation
The first photosynthetic organisms probably
A. lived in the ocean. B. were prokaryotic. C. were cyanobacteria. D. All of these answers are correct.
The process of recovery, purification, and packaging of product is known as ________ processing.
Fill in the blank(s) with the appropriate word(s).