During his groundbreaking experimental work with chemical evolution, Stanley Miller stated: The essential difference between life and non-life is replication. Miller also hypothesized that small inorganic molecules gave rise to larger organic molecules or polymers.
Based on Miller's experiments, chemical evolution theory proposes that the first genetic material was probably
A) RNA.
B) DNA.
C) amino acids.
D) simple proteins.

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Which blood cell spend most of their time in the lymphatic system?

Isolated volcanic peaks on the ocean floor are