In a reaction that is believed to be similar to pre-biotic chemical reactions, H2S can combine with FeS to form ____

Fill in the blank with the appropriate word.


Answer Key: pyrite

Biology & Microbiology

You might also like to view...

A response to change in the internal/external environment that intensifies the change is called ____ feedback

a. positive b. physiological c. reflex d. negative e. anatomical

Biology & Microbiology

In plants, wilting of leaves and stems results from ____

a. hemolysis b. an increase in turgor pressure c. plasmolysis d. a lack of solutes in the cell e. a higher than normal concentration of water in the cell

Biology & Microbiology

Phylogenetic trees are usually constructed using either a distance-based ________ approach, or a characteristic ________ approach. 

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

What would a comparison of prokaryotic and eukaryotic cells reveal?

a. That they both have a cell wall. b. That they both have a nucleus. c. That they both have an endomembrane system. d. That they both have DNA.

Biology & Microbiology