Answer the following question given this paragraph:      Q: Most enzymes are classified as what?   Choices:  - lipids  - acids  - hormones  - proteins  A:
proteins


Answer the following question given this paragraph:      Q: What do increasing greenhouse gas concentrations in the air do to the earth's temperature?   Choices:  - Lower it  - stable it  - Pollute  - raise it  A:
raise it


Q: Answer the following question given this paragraph:   An atom has negatively-charged electrons in orbit around its nucleus.   Q: What orbits an atoms' nucleus?   Choices:  - neutrally charged ions  - positively charged protons  - isotopes  - negatively charged electrons  A:
A: negatively charged electrons


Question: Answer the following question given this paragraph:   Converging plates can be oceanic, continental, or one of each. If at least one is oceanic, it will subduct. A subducting plate creates volcanoes. Many of the world's volcanoes are the result of subduction at a convergent plate boundary. A map of the world's active volcanoes is pictured below ( Figure below ).   Q: Converging plates can be oceanic, continental, or one of each. if at least one is oceanic, it will subduct. a subducting plate creates what?   Choices:  - earthquakes  - fires  - wind  - volcanoes  A:
Answer: volcanoes


*Question*
Answer the following question given this paragraph:   Glial Cells of the CNS One cell providing support to neurons of the CNS is the astrocyte, so named because it appears to be star-shaped under the microscope (astro- = “star”). Astrocytes have many processes extending from their main cell body (not axons or dendrites like neurons, just cell extensions). Those processes extend to interact with neurons, blood vessels, or the connective tissue covering the CNS that is called the pia mater (Figure 12.11). Generally, they are supporting cells for the neurons in the central nervous system. Some ways in which they support neurons in the central nervous system are by maintaining the concentration of chemicals in the extracellular space, removing excess signaling molecules, reacting to tissue damage, and contributing to the blood-brain barrier (BBB). The blood-brain barrier is a physiological barrier that keeps many.   Q: Contributing to the blood-brain barrier is one of the jobs of glial cells, which support neurons in what system?   Choices:  - peripheral nervous system  - circulatory system  - digestive system  - central nervous system  A:
**Answer**
central nervous system


(Q).
Answer the following question given this paragraph:   In many species display behaviors, rather than actual physical attacks, are used to show aggression. This helps prevent injury and death. Male gorillas, for example, are more likely to put on a display of aggression than to attack another male. In fact, gorillas have a whole series of display behaviors that they use to show aggression. They beat on their chest, dash back and forth, and pound the ground with their hands.   Q: How do the male gorillas show display behaviors?   Choices:  - food gathering  - vocalization  - spontaneous mutation  - showing aggression  A:
(A).

showing aggression