DNA stands for Deoxyribonucleic acid which means it is a nucleic acid. RNA stands for Ribonucleicacid. RNA produces proteins
DNA replicates and stores genetic information.
RNA converts the genetic information contained within DNA to a format used to build proteins.
I would have to say the answer is A based off the information above.
Please correct me if I'm wrong.
Considered to be homologous structured similarities, they are different due to evolution and how they were used over thousands of years, eventhough they are all similar because of a common ancestor.
Answer:
D. J. J. Thomson
An atom of calcium
Explanation:
J.J. Thomson while carrying out his experiment on the gas discharge tube discovered electrons. He called them cathode rays.
He observed from his experiment that these rays have the following properties;
- they move in a straight line normal to the cathode
- posses kinetic energy and cause the motion of a mechanical paddle
- attract positive charges
From his experiment, he proposed the plum pudding model of the atom where an atom is made up essentially of electrons.
B. The smallest particle of calcium that has all the chemical properties of calcium is an atom of calcium.
It is upon these unit of calcium that the substance calcium is formed. An atom of calcium will show the same properties as a block of calcium.
Answer:
d. there is a relationship between smoking and lung cancer
Explanation:
a) it is NOT true becasue although the research show that is more likely to get lung cancer for smokers, it DOES NOT show that all smokers get cancer.
b) it is NOT true becasue altough it is very possible that smoking contributes to lung cancer, the research DOES NOT prove that smoking is the cause of lung cancer, it only indicates a relationship between smoking and lung cancer that is evidence that smoking contributes to lung cancer but it is not irrefutable proof.
c) it is NOT true becasue the research finds a relationship between lung cancer and smoking, but it is not focused in explaining smoking predispositionon. It does not investigate predispositions in people to smoke.
C, Dogs have many more olfactory receptors than humans