Which of these chemicals is needed in order for the metabolic reactions of photosynthesis to occur? A) fructose B) glucose C) oxygen D) water

What do you think will happen when you leave the paper in the container overnight?

Which bones protect the lungs and heart? A. Thoracic vertebrae, ribs, sternum B. Thoracic vertebrae, ribs, lumbar vertebrae C. Thoracic vertebrae, sternum, cervical vertebrae D. Thoracic vertebrae, sternum, lumbar vertebrae

How does energy first enter an ecosystem

Compounds are formed as a result of A. evaporation. B. condensation. C. a chemical change.

A reactant that fits into the active site of an enzyme is called?

3 ways that living creatures use lipids

Absolute dating can be determined by which of the following. Select all that apply. A. tree-ring patterns B. Earth's magnetic field C. a historian's journal D. coral growth cycle E. radioactivity F. photo comparison

What conditions cause the contractile vacuole to fill with water?

Which of the following is most likely responsible for the fact that organic molecules no longer formed spontaneously on Earth? A. The amount of UV radiation increased B. The amount of oxygen in the atmosphere increased C.

EDTA is a/an: A: clotting factor B: Plasma protein C: anticoagulant D: hematology stain