Where does the chemical energy released in a chemical reaction come from?

Why some pigments (in plants with more than one) move further than others?

The autonomic nervous system consists of what parts

The P53 protein normally promotes A) DNA repair. B) tumor formation. C) cell division. D) apoptosis.

Biodiversity is important to human society because it a. Is a natural resources b. Provides food and good c. Provides medicines d. All the above

The table shows moose populations in Bullwinkle National Park, over a 35 year period. What could have been responsible for the decrease in the moose population in 1990?

The major effect of genetic drift is: A) The reduction in genetic variability B) An increase in genetic variation to accommodate changes in abiotic conditions C) no change in population size but an increase in favorable alleles D) a reduction in

List some ways of plant cells are made of cellulose

Prokaryotic cells have a simpler structure than eukaryotic cells. Evidence shows that eukaryotic cells evolved from prokaryotic cells. Some might argue that prokaryotic cells are less important than eukaryotic cells.

Which of these facts about wild boars is best supported by the evidence provided? Wild boars were brought to the United States by humans. Wild boars have quickly spread through the United States.

Which of the mechanisms below increases the amount of genetic variations in a population? a. Genetic drift b. Gene flow c. Bottleneck effect d. Founder effect