A researcher places dogs in a cage with metal bars on the floor. The dogs are randomly given electric shocks and can do nothing to prevent them or stop them. Later, the same dogs are placed in a cage where they can escape the shocks by jumping over a low hurdle. When the shocks are given, the dogs do not even try to escape. They just sit and cower. This is an example of .

The  central dogma  of molecular biology is centered upon the process of protein synthesis, in which the information from dna is transcribed and translated, resulting in multiple amino acids being joined to form a)lipidsb)proteinsc)carbohydratesd)nucleic acids

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.

Does all the energy stored by the phytoplankton reach the top level of the pyramid