30.6 • 150 is the same as 4,500 + 90, or 4,590 million kilometers, oddly enough, this isn't one of the options for an answer. Perhaps there was a typo?
I think it's either time or evolution
Answer:
1. Protein molecules help cells carry out many of their functions, and they are part of body structures such as hair and nails.
Explanation:
Proteins are one of the four major biomolecules in living systems. Proteins play a major role in the physiological, structural and metabolical processes in living organisms. They help cells carry out many functions when they acts as enzymes and hormones. Enzymes and hormones are proteinous chemical substances that catalyzes and speedens up physiological reactions respectively.
In addition, proteins are major structural components in animals. For example, keratin is a protein that makes up the hair and nails of animals. They provide structural support in parts of the body they are found.
C
The main function of the Krebs cycle is to transfer high energy electrons to the electron transport chain using the carriers used in Krebs cycle.
