*Question*
Q: The amniotic sac is attached to what? Read this paragraph and choose the correct option from the provided answers: Attached to the placenta is the amniotic sac , an enclosed membrane that surrounds and protects the fetus (see Figure above ). It contains amniotic fluid, which consists of water and dissolved substances. The fluid allows the fetus to move freely until it grows to fill most of the available space. The fluid also cushions the fetus and helps protect it from injury. Choices: - Umbilical Cord - Stomach - uterus - placenta A:
**Answer**
placenta

*Question*
Q: The airway and the lungs are part of what organ system? Read this paragraph and choose the correct option from the provided answers: 31 Respiratory system In humans and other animals, for example, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Other animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange. Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals. The respiratory system in plants also includes anatomical features such as holes on the undersides of leaves known as stomata. In mammals, the diaphragm divides the body cavity into the abdominal cavity: contains the viscera (e. , stomach and intestines). Choices: - coronary - pulmonary - digestive - respiratory A:
**Answer**
respiratory

*Question*
Q: What do you get by multiplying volume by the density of water? Read this paragraph and choose the correct option from the provided answers: Consider a gigantic tub filled with water as shown below. A column of water with a cross-sectional area of 1.00 m 2 is designated. If we multiply the cross-sectional area by the height of the column, we get the volume of water in this column. We can then multiply this volume by the density of water, 1000. kg/m 3 , and get the mass of water in the column. We then multiply this mass by the acceleration due to gravity, , to get the weight of the water in this column. Choices: - velocity of water - temperature of water - weight of water - mass of water A:
**Answer**
mass of water

*Question*
Q: The first reaction of the body to tissue damage or infection is called the what response? Read this paragraph and choose the correct option from the provided answers: The cut on your hand may become red, warm, and swollen. These are signs of an inflammatory response. This is the first reaction of the body to tissue damage or infection. As explained in Figure below , the response is triggered by chemicals called cytokines and histamines , which are released when tissue is injured or infected. The chemicals communicate with other cells and coordinate the inflammatory response. You can see an animation of the inflammatory response at this link: http://www. sumanasinc. com/webcontent/animations/content/inflammatory. html . Choices: - defensive - harmful - retaliatory - inflammatory A:
**Answer**
inflammatory