Answer the following question given this paragraph: Most scientists agree that the Earth itself is not a living thing. However, the Earth does have some aspects of life. Some scientists argue that the Earth maintains homeostasis, a stable state, just like a living organisms. Q: The earth is like organisms in that it maintains a stable state, which is also known as what? Choices: - ketosis - hibernation - dormancy - homeostasis A:
homeostasis
Answer the following question given this paragraph: cells. The ovaries produce estradiol and progesterone, which cause secondary sex characteristics and prepare the body for childbirth. Q: The ovaries produce estradiol and progesterone, which cause secondary sex characteristics and prepare the body for? Choices: - breathing - adulthood - movement - childbirth A:
childbirth
Q: Answer the following question given this paragraph: Q: What is a decrease in the magnitude of the membrane potential? Choices: - digestion - ionization - inflammation - depolarization A:
A: depolarization
Question: Answer the following question given this paragraph: Infectious diseases caused by viruses include the common cold, influenza, and acquired immunodeficiency syndrome (AIDS) and are among the most significant health problems in our society. Viruses are infectious agents far smaller and simpler than bacteria that are composed of a tightly packed central core of nucleic acids enclosed in a protective shell. The shell consists of layers of one or more proteins and may also have lipid or carbohydrate molecules on the surface. Because of their simplicity, viruses must invade the cells of other organisms to be able to reproduce. Viruses are visible only under an electron microscope. They come in a variety of shapes, ranging from spherical to rod shaped. The fact that they contain either deoxyribonucleic acid (DNA) or ribonucleic acid (RNA)but never bothallows them to be divided into two major classes: DNA viruses and RNA viruses (Figure 19.17 "Viruses"). Figure 19.17 Viruses. Q: Culprits in the common cold and aids, what infectious agents are far smaller and simpler than bacteria? Choices: - poisons - pathogens - parasites - viruses A:
Answer: viruses
*Question*
Answer the following question given this paragraph: Conceptual Questions 19.1 Electric Potential Energy: Potential Difference 1. Voltage is the common word for potential difference. Which term is more descriptive, voltage or potential difference? 2. If the voltage between two points is zero, can a test charge be moved between them with zero net work being done? Can this necessarily be done without exerting a force? Explain. What is the relationship between voltage and energy? More precisely, what is the relationship between potential difference and electric potential energy? 4. Voltages are always measured between two points. Why? 5. How are units of volts and electron volts related? How do they differ?. Q: What is the common word for potential difference in a circuit? Choices: - watt - velocity - frequency - voltage A:
**Answer**
voltage
*Question*
Answer the following question given this paragraph: The rock in Figure above is an example of a heterogeneous mixture. A heterogeneous mixture varies in its composition. The black nuggets, for example, are not distributed evenly throughout the rock. Q: What is the term for a mixture that varies in its composition? Choices: - homogeneous - amorphous - mixed composition - heterogeneous A:
**Answer**
heterogeneous