The correct answer is<span> a. Volcanic glass

Volcanic glass is also known as Obsidian. It is formed when lava cools down too rapidly and crystals grow minimally, without grains.</span>

7 0

2 years ago

What type of organisms was most likely feeding on this sample ?

jek_recluse [69]

I think Number C is right because Since the organism eukaryotic we can safely assume that it is neither an archaea nor a bacteria since they are both prokaryotes. Secondly, since it can not photosynthesize, it can't be a plant because all plants can photosynthesize. The presence of a cell wall tells us that it can't be an animal cell since they lack cell walls. Therefore, the organism found is a fungus-like protist. Fungi are prokaryotic cells that are unable to photosynthesize and they have cell walls.

5 0

2 years ago

Each of the following statements describes a type of column chromatography. Sort the statements to the type of chromatography th

horsena [70]

Answer:

Explanation:

Separate molecules by size. > All

Separate molecules by charge. > Ion-exchange Chromatography, Affinity Chromatography

The stationary phase has a covalently bound group to which a protein in the mobile phase can bind. > All

Uses a mobile phase and a stationary phase to separate proteins. > All

The stationary phase contains cross-linked polymers with different pore sizes. > Size-exclusion Chromatography

Can separate molecules based on protein-ligand binding. > Affinity Chromatography

The stationary phase may contain negatively or positively charged groups. > Ion-exchange Chromatography, Affinity Chromatography

7 0

2 years ago

Which three systems of the human body function together to move and control body parts?

rusak2 [61]

Answer:

nervous, skeletal, and muscular

Explanation:

4 0

2 years ago