When organisms die, most of the nitrogen in their tissues is

A. lost from the nitrogen cycle forever.

B. converted directly into nitrogen gas.

C. recycled by bacteria in the soil. D. released directly into the soil.

The Law of Conservation of Mass states that in a chemical reaction, matter is not created or destroyed. O O A. True B. False

Is pectin found in animal cells?

Which of the following is FALSE? 1. Mitochondria have more than one membrane. 2. Mitochondria possess their own DNA. 3. The folds of the inner mitochondrial membrane are called cristae. 4. Mitochondria are involved in energy metabolism. 5.

Minor changes can occur over few generations

A major function of serous membranes is to decrease friction. True or False

What is the name of a long chain of amino acids strung together? Select one: O a. Polysaccharide b. Polypeptide c. Peptide sandwich O d. Polymorphism Check

For Ryan to meet his grain requirements, which group of foods would be his best choice in a single day?

The appropriate unit for defining and measuring genetic variation is the

Assume that a new parasite that infests blue crabs is introduced into the Hudson River, decimating blue crab populations.

Why do bodies of water tend to moderate temperature swings from day to day?