Why we need air to breath?

Do plants have cell walls and if so what are the cell walls made of

Relation to protein production and packaging in a eukaryotic cell, which step occurs first? A. The ER membrane pinches off to encircle the protein. B. In the nucleus DNA instructions are copied as RNA messages. C.

Match the conservation actions to their effects. Build walls along steep slopes. Purify water to remove industrial byproducts and other waste products. introduce tough laws to ban activities such as hunting, fishing, and poaching.

The fish in a pond are dying because of algal bloom. Algal bloom is caused by the presence of excess phosphorus or sulfur in the pond.

Compare all the organisms. What trend do you see? The proportions of DNA bases vary greatly among organisms. The proportions of DNA bases are similar in closely related organisms, but different in organisms that are not closely related.

The functional unit of the kidney is the.

What blood vessel type transports blood away from the heart?

Carbohydrates and fat both a. Can be used as an energy source by organisms b. Can be bonded together to construct DNA molecules c. Are made up of the glucose monomer d. Are monomers that can be made into large polymer chains

Water vapor becomes liquid water droplets

In a plant, the allele for tall stems (T) is completely dominant to the allele for short stems (t). A second gene located on a separate chromosome determines flower color.