Which of the following nitrogen bases is NOT found in the RNA structure?

a. Adenine

c. Guanine

b. Cytosine

d. Thymine

a certain bone is part of the axial skeleton and protects one of the vital organs located in the chest area which bone will it likely be

What part of earth that is desert and grass lands

What are lymphocytes? What is their function?

What kind of energy transformation is taking place in the caterpillar's body while the caterpillar eats the leaf in the photograph?

What would happen if an electron was added to an atom? choose all that are correct 1) it would become a different atom 2) it's charge would increase by 1 3) it would add to the mass by 1 4) the charge would be reduced by 1

Which of the following is a function of the cell membrane of a cell? A. The production of energy from food molecules using cellular respiration. B. The production of genetic material through DNA transcription. C.

Which process occurs only in autotrophic organisms?

Polymers are made of individual subunit called

What are the exergonic reactions that provide living systems with energy (give two examples) ?

The roots of a plant are usually located underground and composed of which of the following tissue systems?