When do animals cooperate with one another?

a.) when the costs outweigh the benefits

b.) when the costs equal the benefits

c.) when the costs are less than the benefits

Could you survive without any of your organ systems? Why or why not?

What criteria must a material meet to be considered a cell?

Which sequence best represents the flow of energy through an ecosystem? (1) Sun → green plants → herbivores → carnivores (2) Sun → herbivores → producers → consumers (3) green plants → carnivores → consumers → herbivores (4) consumers → carnivores →

What are the main ingredients in a sequence reaction and what is each used for?

How do pain relievers work? A.) Increase production of white blood cells B.) Increase body temperature C.) Block messages within the nervous system D.) Block hormone production

Griffith, in his 1928 experiments, demonstrated that bacterial strains could be genetically transformed. The evidence that DNA was the "transforming principle" responsible for this phenomenon came later.

What is believed to be the first type of cells on earth? a. tree cells b. eukaryotic cells c. prokaryotic cells d. plant cells

What would happen if a mistake is made during protein synthesis?

Which of the following can upset the balance of an ecosystem? too much water not enough water too much light not enough light all of the above none of the above

At the end of telophase, what must occur? the cytoplasm is divided by cytokinesis the new cells must immediately begin to divide again the new cells fuse together to create one larger cell the cell begins to divide by replicating the chromosomes