What was the first period of the Paleozoic era?

1. Siberian

2. Precambrian

3. Ordovician

4. Cambrian

Bacteria cultures that have been allowed to undergo fermentation have been used commercially for centuries in the production of

To meet cellular needs forfood, waster, energy and waste removal, multicellular organisms have developed various specializations such as organs

Describe the structure that form the outside of a prokaryotic cell

The bones and limbs are part of what skeleton

A cell with mutated dna may not be able to produce proteins accurately. what can lead to mutations in the dna?

What is the process of mountain building called

Sexual reproduction is the reproductive process that 1) keeps species from changing. 2) produces identical offspring. 3) causes mutations. 4) creates genetic variety.

About half of the forests that covered the earth in the early 1900s have been cut down. Discuss the impact this has on carbon dioxide levels in the atmosphere. Support your answer.

How manny amino acids are found in living organisms

A deletion of one base in the original segment of DNA is called a frameshift nutation what will happen to the newly synthesized protein as a result