According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?

a. this implies that rna can catalyze any chemical reaction that enzymes catalyze.
b. this implies that dna and proteins evolved after rna.
c. this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.
d. this implies that dna and proteins aren't essential in cells today.

From my little but growing knowledge on biology, I would think that the answer would be C.)

Explanation:

I would think this because, RNA is just DNA "recoded" essentially. Then RNA(depending on the type) is coded into proteins, which is coded into amino acids. This would make it easy to fix DNA's mistake, but also be easy to mess up.

This is thebest I could do off the top of my head. I hope this helps!

B

Explanation: RNA world theory implies that DNA and protein evolved after RNA. Some evidence suggests RNA enzymes can catalyse reactions that are essential for life, example, ribosomes that are composed of RNA primarily. And ribonucleotide moiety in many enzymes.

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

answer;

-chlorine

explanation;

-toxic industrial chemicals are industrial chemicals that are manufactured, stored, transported, and used throughout the world. toxic industrial chemicals can be in the gas, liquid, or solid state.

-they can be chemical hazards (e.g., carcinogens, reproductive hazards, corrosives, or agents that affect the lungs or blood) or physical hazards (e.g., flammable, combustible, explosive, or reactive).