NLN Practice Test Science Pax Exam

An organism with chloroplast in its cell is probably a - autotroph autotrophs - are organisms that produce their own food from inorganic substances, plants are autotrophs heterotrophs - obtain their food by consuming plants or other animals. They are also referred to as consumers. Primary consumers may be herbivores herbivores - plant eaters omnivores - plant and meat eaters Secondary consumers - are carnivores, meat eaters, or omnivores that eat herbivores. Tertiary consumers are carnivores that eat - other carnivores or omnivores. What property of water allows someone to fill a glass slightly above the rim without the water flowing over? - surface tension Water molecules are polar. This is due to the fact that oxygen draws the electrons in the molecule toward itself. Thus, there is a negative charge surrounding the oxygen and a positive charge around the hydrogen. The unbalanced charges cause the water molecules to cluster, and this gives the water the properties called surface tension. Surface tension is the the attraction between molecules at the surface of a liquid, which allows a glass to be filled above the rim without the water flowing over. The gap between the neurons are called - synapses Which group of chemicals are not normally found in most living things? - silicates Carbohydrates, proteins and nucleic acids (RNA and DNA) are all very important chemicals in living things. Silicates examples are in sand and glass