Problem:OPTIONS:
- hydrogen
- atoms
- ions
- molecules

Answer the following question given this paragraph: Water is a compound that consists of the elements hydrogen (H) and oxygen (O). Like other compounds, the smallest particles of water are called molecules. Each molecule of water (H 2 O) contains two atoms of hydrogen and one atom of oxygen. Q: What are the smallest particles of water called? A:
****
A: molecules

Answer the following question given this paragraph: Chapter 15 1 The heart rate increases to send more blood to the muscles, and the liver releases stored glucose to fuel the muscles. 3 The effect of gravity on circulation means that it is harder to get blood up from the legs as the body takes on a vertical orientation. 5 The release of urine in extreme fear. The sympathetic system normally constricts sphincters such as that of the urethra. 7 D 9 C 11 A 13 D 15 A 17 A 19 B 21 B 23 C 25 D 27 Whereas energy is needed for running away from the threat, blood needs to be sent to the skeletal muscles for oxygen supply. The additional fuel, in the form of carbohydrates, probably wouldn't improve the ability to escape the threat as much as the diversion of oxygen-rich blood would hinder it. 29 The nerves that carry sensory information from the diaphragm enter the spinal cord in the cervical region where somatic sensory fibers from the shoulder and neck would enter. The brain superimposes this experience onto the sensory homunculus where the somatic nerves are connected. 31 Pupillary dilation and sweating, two functions lost in Horner's syndrome, are caused by the sympathetic system. A tumor in the thoracic cavity may interrupt the output of the thoracic ganglia that project to the head and face. 33 Blood vessels, and therefore blood pressure, are primarily influenced by only the sympathetic system. There is no parasympathetic influence on blood pressure, so nicotine activation of autonomic ganglia will preferentially increase blood pressure. Also, cardiac muscle tissue is only modulated by autonomic inputs, so the conflicting information from both sympathetic and parasympathetic postganglionic fibers will cause arrhythmias. Both hypertension and arrhythmias are cardiac risk factors. Q: The effect of gravity on circulation means that it is harder to get blood up from the legs as the body takes on this? A:
OPTIONS:
- frontal orientation
- dorsal orientation
- horizontal orientation
- vertical orientation
vertical orientation

Answer the following question given this paragraph: The mouth is the first digestive organ that food enters. The sight, smell, or taste of food stimulates the release of saliva and digestive enzymes by salivary glands inside the mouth. Saliva wets the food, which makes it easier to break up and swallow. The enzyme amylase in saliva begins the chemical digestion of starches to sugars. Q: What is the first digestive organ that food enters? A:
OPTIONS:
- stomach
- tongue
- esophagus
- mouth

Answer: mouth

Question: Answer the following question given this paragraph: Nutrients can enter or exit an ecosystem at any point and can cycle around the planet. Q: At what point can nutrients enter or exit an ecosystem? A:
OPTIONS:
- Largest Population Point
- Longest Point
- Hottest Point
- any point
Answer: any point

input with options: Answer the following question given this paragraph: Refraction is responsible for dispersion in rainbows and many other situations. The angle of refraction depends on the index of refraction, as we saw in The Law of Refraction. We know that the index of refraction n depends on the medium. But for a given medium, n also depends on wavelength. (See Table 25.2. Note that, for a given medium, n increases as wavelength decreases and is greatest for violet light. Thus violet light is bent more than red light, as shown for a prism in Figure 25.23(b), and the light is dispersed into the same sequence of wavelengths as seen in Figure 25.21 and Figure 25.22. Making Connections: Dispersion Any type of wave can exhibit dispersion. Sound waves, all types of electromagnetic waves, and water waves can be dispersed according to wavelength. Dispersion occurs whenever the speed of propagation depends on wavelength, thus separating and spreading out various wavelengths. Dispersion may require special circumstances and can result in spectacular displays such as in the production of a rainbow. This is also true for sound, since all frequencies ordinarily travel at the same speed. If you listen to sound through a long tube, such as a vacuum cleaner hose, you can easily hear it is dispersed by interaction with the tube. Dispersion, in fact, can reveal a great deal about what the wave has encountered that disperses its wavelengths. The dispersion of electromagnetic radiation from outer space, for example, has revealed much about what exists between the starsthe so-called empty space. Q: The angle of refraction depends on the index of what? A:
OPTIONS:
- frequency
- vibration
- reflection
- refraction
output: refraction

Problem: OPTIONS:
- hormones
- carbohydrates
- iseotrops
- enzymes
Q: Answer the following question given this paragraph: Enzymes are involved in most of the biochemical reactions that take place in organisms. About 4,000 such reactions are known to be catalyzed by enzymes, but the number may be even higher. Enzymes allow reactions to occur at the rate necessary for life. Q: What substances serve as catalysts in most of the biochemical reactions that take place in organisms? A:
Answer:
enzymes