Answer:
Rosalind Franklin made an X-ray image of the DNA molecule, that has revealed the following:
1. The nitrogenous bases are near the center of the DNA molecule
2. DNA molecule is composed out of two strands
3. DNA molecule has the shape of a helix
Watson and Crick made the first model of the DNA molecule based on that very picture. They concluded that the strands are antiparallel and that they are composed of nucleotides.
Explanation:
Answer:
The correct answer is A.) Forms the plant cell wall.
Answer:
C.
Explanation:
He removed a level and added a kingdom.
Euglena move by a flagellum<span>, which is a long whip-like structure that acts like a little motor. The </span>flagellum<span> is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water. It is attached at an inward pocket called the reservoir</span>