Answer the following question given this paragraph: Cartilage Templates Bone is a replacement tissue; that is, it uses a model tissue on which to lay down its mineral matrix. For skeletal development, the most common template is cartilage. During fetal development, a framework is laid down that determines where bones will form. This framework is a flexible, semi-solid matrix produced by chondroblasts and consists of hyaluronic acid, chondroitin sulfate, collagen fibers, and water. As the matrix surrounds and isolates chondroblasts, they are called chondrocytes. Unlike most connective tissues, cartilage is avascular, meaning that it has no blood vessels supplying nutrients and removing metabolic wastes. All of these functions are carried on by diffusion through the matrix. This is why damaged cartilage does not repair itself as readily as most tissues do. Throughout fetal development and into childhood growth and development, bone forms on the cartilaginous matrix. By the time a fetus is born, most of the cartilage has been replaced with bone. Some additional cartilage will be replaced throughout childhood, and some cartilage remains in the adult skeleton. Q: For skeletal development, the most common template is what? Choices: - calcium - membrane - collagen - cartilage A:
cartilage
(Question)
Answer the following question given this paragraph: Wild plants and animals maintain a valuable pool of genetic variation . This is important because domestic species are genetically uniform. This puts them at great risk of dying out due to disease. Q: Unlike wild animals, what type of species are genetically uniform, making them more vulnerable to die-out from disease? Choices: - free-range species - urbane species - mammals - domestic species A:
(Answer)
domestic species
Ques: Answer the following question given this paragraph: The walls of the ventricle are lined with trabeculae carneae, ridges of cardiac muscle covered by endocardium. In addition to these muscular ridges, a band of cardiac muscle, also covered by endocardium, known as the moderator band (see Figure 19.9) reinforces the thin walls of the right ventricle and plays a crucial role in cardiac conduction. It arises from the inferior portion of the interventricular septum and crosses the interior space of the right ventricle to connect with the inferior papillary muscle. When the right ventricle contracts, it ejects blood into the pulmonary trunk, which branches into the left and right pulmonary arteries that carry it to each lung. The superior surface of the right ventricle begins to taper as it approaches the pulmonary trunk. At the base of the pulmonary trunk is the pulmonary semilunar valve that prevents backflow from the pulmonary trunk. Q: What reinforces the thin walls of the right ventricle and plays a crucial role in cardiac conduction? Choices: - pores band - moderator valve - pores valve - moderator band A:
Ans: moderator band
(Q).
Answer the following question given this paragraph: Q: Rupture or blockage of arteries in the head is the usual cause of what condition? Choices: - heart disease - migraine headache - heart attack - stroke A:
(A).
stroke
Ques:Answer the following question given this paragraph: There are two types of fermentation: lactic acid fermentation and alcoholic fermentation. Both types of fermentation are described below. You can also watch animations of both types at this link: http://www. cst. cmich. edu/users/schul1te/animations/fermentation. swf . Q: What are the two types of fermentation? Choices: - acetic and anhydrous - alcoholic and alchemical - lactic acid and fermaldehyde - lactic acid and alcoholic A:

Ans:lactic acid and alcoholic
Answer the following question given this paragraph: Carbohydrates include sugars, starches, and fiber. Sugars and starches are used by the body for energy. One gram of carbohydrates provides 4 Calories of energy. Fiber, which is found in plant foods, cannot be digested but is needed for good health. Q: One gram of carbohydrates provides how many calories of energy? Choices: - eight - one - two - four A:
four