Answer the following question given this paragraph: The thermometer was developed a short time after the barometer made it possible to study pressure in a quantitative manner. Although crude thermometers had been available for quite some time, Daniel Fahrenheit constructed a more accurate thermometer in 1724 using mercury in glass. Because the height of the mercury in the thermometer was a relative measure, certain fixed points needed to be defined. Originally, Fahrenheit defined a 1:1:1 mixture of ice, salt, and ammonium chloride as 0F, and the freezing/melting point of ice as 32F. On this scale, the normal temperature of the human body is 96F, and the boiling point of water is 212C. The modern Fahrenheit scale is defined in terms of the normal freezing and boiling points of water. Q: What instrument made it possible to study pressure quantitatively? Choices: - anemometer - seismograph - thermometer - barometer A:
barometer
Answer the following question given this paragraph: The Sun produces far more energy than humans can use. The Sun is also the source of most of the energy we use. Fossil fuels and wind energy, for example, originate with the Sun. So why don't we get all our energy from the Sun? For one reason, it's not always practical. Q: What is the source of most of the energy used? Choices: - the Earth - fossil fuels - the Moon - the sun A:
the sun
Q: Answer the following question given this paragraph: Corals form large colonies in shallow tropical water. They are confined to shallow water because they have a symbiotic relationship with algae that live inside of them. The algae need sunlight for photosynthesis, so they must stay relatively close to the surface of the water to get enough light. Corals exist only as polyps. They catch plankton with their tentacles. Q: Coral and the algae living inside of them have what type of relationship, since the algae relies on the coral to stay close to the water's surface? Choices: - peculiar - competitive - parasitic - symbiotic A:
A: symbiotic
Question: Answer the following question given this paragraph: The hybridization model helps explain molecules with double or triple bonds. Consider the ethene molecule (C 2 H 4 ), which contains a double covalent bond between the two carbon atoms and single bonds between the carbon atoms and the hydrogen atoms. The entire molecule is planar. Q: Which model helps explain molecules with double or triple bonds? Choices: - salinity model - reactivity model - particle model - hybridization model A:
Answer: hybridization model
*Question*
Answer the following question given this paragraph: http://www. kentchemistry. com/links/Kinetics/entropy. htm. Q: A small molecule that binds to a larger molecule is known as a? Choices: - lipid - enzyme - oxide - ligand A:
**Answer**
ligand
(Question)
Answer the following question given this paragraph: Figure 3.9 (a) A typical human brain weighs about 1.5 kg and occupies a volume of roughly 1.1 L. (b) Information is transmitted in brain tissue and throughout the central nervous system by specialized cells called neurons (micrograph shows cells at 1600 magnification). Specialized cells called neurons transmit information between different parts of the central nervous system by way of electrical and chemical signals. Chemical signaling occurs at the interface between different neurons. Q: What are the specialized cells within the brain called? Choices: - ions - electrons - protons - neurons A:
(Answer)
neurons