Describe the effect that photosynthesizing prokaryotes had on the ancient atmosphere.

What is a saprobiont

Which of the following is a true statement? Mucus protects the stomach lining from digestive secretions. Protease breaks down lipids into fatty acids and glycerol. Lipase breaks down proteins in the small intestine.

In South China during the late Carboniferous period, was the air temperature warmer or cooler than the air temperature in that location today?

Which organism fix nitrogen in the soil?

1. Name the primary classes of antibodies and describe their structures. IgM: IgG: IgA: IgD: IgE: 2. In response to an antigen, which antibodies are secreted/produced first? Are all classes of antibodies found in the circulation at all times?

The modern classification system is based on A - putting organisms into categories based on where they live. B - putting organisms into categories based on how they reproduce. C - putting organisms into categories based on similar characteristics.

Classify the mutations as somatic or inherited A. Mutations in the KRAS gene in lung cells promote continuous cell growth B. Mutations of the BRAC1 gene in egg cells lead to breast cancer C.

The female determines the sex of mammals. True False

The definition of a hero is a. universally understood. b. determined by personal and cultural factors. c. clearly defined by a set of established traits. d. static and impartial.

Hydrogen ion concentration in vinegar