Answer the following question given this paragraph: Giant elliptical galaxies contain over a trillion stars. Elliptical galaxies are red to yellow in color because they contain mostly old stars. Most contain very little gas and dust because the material has already formed into stars. Q: Which type of galaxies contain very little gas and dust, are red to yellow in color, contain over a trillion stars and have mostly old stars? Choices: - blue elliptical galaxies - giant orbital galaxies - giant gaseous galaxies - giant elliptical galaxies A:
giant elliptical galaxies
(Question)
Answer the following question given this paragraph: Food allergies occur when the immune system reacts to substances in food as though they were harmful "foreign invaders. " Foods that are most likely to cause allergies are pictured in Figure below , and include nuts, eggs, grains and milk. Symptoms of food allergies often include vomiting and diarrhea. Symptoms of food allergies include itching and swelling of the lips and mouth. More serious symptoms include trouble breathing. In some instances, a food allergy can trigger anaphylaxis, which is an extremely severe reaction. Emergency medical treatment is critical for this condition, which left untreated, can lead to death. Q: What is an extremely severe food allergy reaction? Choices: - sepsis - apoptosis - lymphocytes - anaphylaxis A:
(Answer)
anaphylaxis
Ques: Answer the following question given this paragraph: 9.2 | Fibrous Joints By the end of this section, you will be able to: Describe the structural features of fibrous joints Distinguish between a suture, syndesmosis, and gomphosis Give an example of each type of fibrous joint At a fibrous joint, the adjacent bones are directly connected to each other by fibrous connective tissue, and thus the bones do not have a joint cavity between them (Figure 9.5). The gap between the bones may be narrow or wide. There are three types of fibrous joints. A suture is the narrow fibrous joint found between most bones of the skull. At a syndesmosis joint, the bones are more widely separated but are held together by a narrow band of fibrous connective tissue called a ligament or a wide sheet of connective tissue called an interosseous membrane. This type of fibrous joint is found between the shaft regions of the long bones in the forearm and in the leg. Lastly, a gomphosis is the narrow fibrous joint between the roots of a tooth and the bony socket in the jaw into which the tooth fits. Q: What type of fibrous joint is found between most bones of the skull? Choices: - lobiture - aperture - trecature - suture A:
Ans: suture
(Q).
Answer the following question given this paragraph: Electromagnetic waves consist of vibrating electric and magnetic fields. They transfer energy across space as well as through matter. Electromagnetic waves vary in their wavelengths and frequencies, and higher-frequency waves have more energy. The full range of wavelengths of electromagnetic waves is called the electromagnetic spectrum. It is outlined in the following Figure below . Q: What kind of waves consist of vibrating electric and magnetic fields? Choices: - gaseous waves - sound waves - hydraulic waves - electromagnetic waves A:
(A).
electromagnetic waves
Ques:Answer the following question given this paragraph: The solubility of gases is also affected by pressure. Pressure is the force pushing against a given area. Increasing the pressure on a gas increases its solubility. Did you ever open a can of soda and notice how it fizzes out of the can? Soda contains dissolved carbon dioxide. Opening the can reduces the pressure on the gas in solution, so it is less soluble. As a result, some of the carbon dioxide comes out of solution and rushes into the air. Q: Increasing the pressure on a gas has what effect on its solubility? Choices: - decrease - halt - slow - increase A:

Ans:increase
Ques: Answer the following question given this paragraph: sphincter, but the esophagus remains closed when there is no swallowing action. Acid reflux or "heartburn" occurs when the acidic digestive juices escape into the esophagus. Stomach A large part of digestion occurs in the stomach, shown in Figure 34.11. The stomach is a saclike organ that secretes gastric digestive juices. The pH in the stomach is between 1.5 and 2.5. This highly acidic environment is required for the chemical breakdown of food and the extraction of nutrients. When empty, the stomach is a rather small organ; however, it can expand to up to 20 times its resting size when filled with food. This characteristic is particularly useful for animals that need to eat when food is available. Q: What is the cause of the "heartburn" that occurs when acidic digestive juices escape into the esophagus? Choices: - toxic reflux - acidic buildup - acid pressure - acid reflux A:
Ans:
acid reflux