In places where deposits of diatom shells have been lifted onto land by geological processes, people mine the resulting "diatomaceous earth.". Why?

What will be an ideal response?


Diatom shells are made of silica. This silica-rich material is used in filters and cleaners, and as an insecticide that is nontoxic to vertebrates.

Biology & Microbiology

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Viruses have typical cellular structure like other living organisms.

Answer the following statement true (T) or false (F)

Biology & Microbiology

The cellular components of blood that transport oxygen are

A. leukocytes. B. erythrocytes. C. platelets. D. chondrocytes. E. osteocytes.

Biology & Microbiology

The most toxic substances routinely found in the blood are metabolites of

1.carbohydrates. 2.proteins. 3.lipids. 4.minerals. 5.vitamins.

Biology & Microbiology

The ________ is the site where lipids, triglycerides, and steroids are synthesized, as well as where calcium is stored within the cell.

A) lysosome B) smooth endoplasmic reticulum C) nucleolus D) mitochondria E) rough endoplasmic reticulum

Biology & Microbiology