1. Some enzymes catalyze reactions that can run in either direction.
2. A product in one process may be a reactant in the next process.
Answer:
Liquid and gas molecules can move freely, while solid is limited
Explanation:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Answer:
C. Organisms are now divided into three kingdoms.
Explanation:
In the early 1860s, a German scientist named Ernst Haeckel suggested using a three kingdom system of classification. Haeckel's three kingdoms were Animalia, Plantae, and Protista.
Answer:
1. Enzyme binds to substrate at it's active site.
2. Enzyme-substrate complex is formed.
3. Products are released.
4. Enzyme is recycled and moves on to catalyze another reaction.
Explanation: