Chemical messages originate from

a. DNA

b. E. R.

Which of the following is an example of an advance in DNA technology that has directly affected human health? A. Cross-species transplantation B. Cloning sheep C. DNA fingerprinting D. Production of insulin by bacteria

Alcohol interacts with more types of receptors, neurotransmitters, and genes than do marijuana and cocaine.

Which characteristic do euglenoids and algae share

What are character traits that people work toward, in order to become better human beings? A. Right B. Virtues C. Ethics D. Laws

Which of the following is NOT a layer of the alimentary wall A. lumen B. mucosa C. serosa D. muscularis

All organic molecules contain the element carbon.

Which cell part contains directions for cell growth and reproduction? A. cell wall B. plasma membrane C. nucleus D. pores

Which of the following statements are incorrect? A. Stem vascular bundles in monocots are in a ring. B. Dicot roots are fibrous in structure. C. Pollen in monocots has one opening. D. Dicots have floral parts mostly in multiples of fours and fives.

In the living world, there is a great deal of genetic variation. The genetic information of dogs differs from the genetic information of cats. The genetic information of plants differs from the genetic information of bacteria.

Explain the concept of same DNA in all body tissues