Answer the following question given this paragraph: Birth Prior to birth, the lungs are filled with amniotic fluid, mucus, and surfactant. As the fetus is squeezed through the birth canal, the fetal thoracic cavity is compressed, expelling much of this fluid. Some fluid remains, however, but is rapidly absorbed by the body shortly after birth. The first inhalation occurs within 10 seconds after birth and not only serves as the first inspiration, but also acts to inflate the lungs. Pulmonary surfactant is critical for inflation to occur, as it reduces the surface tension of the alveoli. Preterm birth around 26 weeks frequently results in severe respiratory distress, although with current medical advancements, some babies may survive. Prior to 26 weeks, sufficient pulmonary surfactant is not produced, and the surfaces for gas exchange have not formed adequately; therefore, survival is low. Q: Prior to birth, the lungs are filled with amniotic fluid, mucus, and what else? Choices: - blood - plasma - air - surfactant A:
surfactant
(Question)
Answer the following question given this paragraph: Diabetes is another type of noninfectious disease. Diabetes occurs when the pancreas doesn't make enough insulin or else the body's cells are resistant to the effects of insulin. Insulin is a hormone that helps cells absorb glucose from the blood. Q: What occurs when the pancreas doesn't make enough insulin or else the body's cells are resistant to the effects of insulin? Choices: - hepatitis - anemia - colitis - diabetes A:
(Answer)
diabetes
Ques: Answer the following question given this paragraph: We can see two general types of effects when humans are exposed to radiation. Low-level exposure can lead to development of cancer. The regulatory processes regulating cell growth are disrupted, leading to uncontrolled growth of abnormal cells. Acute exposure can produce nausea, weakness, skin burns, and internal tissue damage. Cancer patients receiving radiation therapy experience these symptoms, but the radiation is targeted to a specific site in the body so that the damage is primarily to the cancer cells and the patient is able to recover from the exposure. Q: Low-level exposure of humans to radiation can cause what? Choices: - illness - coughing - bleeding - cancer A:
Ans: cancer
(Q).
Answer the following question given this paragraph: High-energy electrons are released from NADH and FADH 2 , and they move along electron transport chains, like those used in photosynthesis. The electron transport chains are on the inner membrane of the mitochondrion. As the high-energy electrons are transported along the chains, some of their energy is captured. This energy is used to pump hydrogen ions (from NADH and FADH 2 ) across the inner membrane, from the matrix into the intermembrane space. Electron transport in a mitochondrion is shown in Figure below . Q: The electron transport chains are located on the inner membrane of which organelle? Choices: - chloroplast - lysosome - axon - mitochondrion A:
(A).
mitochondrion
Ques:Answer the following question given this paragraph: Fresh water is also preserved by purifying wastewater. Wastewater is water that has been used for cleaning, washing, flushing, or manufacturing. It includes the water that goes down your shower drain and that is flushed down your toilet. Instead of dumping wastewater directly into rivers, wastewater can be purified at a water treatment plant ( Figure below ). When wastewater is recycled, waterborne diseases caused by pathogens in sewage can be prevented. What are some ways you can save water in your own house?. Q: What do we call water that has been used for cleaning, washing, flushing, or manufacturing? Choices: - Grey water - sewage - groundwater - wastewater A:

Ans:wastewater
Answer the following question given this paragraph: If you take a hot shower in a closed bathroom, the mirror is likely to "fog" up. The "fog" consists of tiny droplets of water that form on the cool surface of the mirror. Why does this happen? Some of the hot water from the shower evaporates, so the air in the bathroom contains a lot of water vapor. When the water vapor contacts cooler surfaces, such as the mirror, it cools and loses energy. The cooler water particles no longer have enough energy to overcome the forces of attraction between them. They come together and form droplets of liquid water. Q: What results when the water vapor from a hot shower contacts the cooler surface of a mirror? Choices: - the mirror breaks - mirror brightens - cleaner mirror - foggy mirror A:
foggy mirror