Answer the following question given this paragraph: element: A substance that cannot be separated into smaller pieces. Defined by how many protons it has. Q: What do you call a substance that cannot be separated into smaller pieces, which is also defined by the number of protons it has? Choices: - electrol - molecule - atom - element A:
element
(Question)
Answer the following question given this paragraph: Photosynthetic organisms include plants, algae, and some bacteria. Q: Plants, algae and bacteria are all examples of what type of organism? Choices: - microbes - unicellular - skeletal - photosynthetic A:
(Answer)
photosynthetic
Ques: Answer the following question given this paragraph: Arthropods have a life cycle with sexual reproduction. Most species go through larval stages after hatching. The larvae are very different from the adults. They change into the adult form in a process called metamorphosis . This may take place within a cocoon. A familiar example of metamorphosis is the transformation of a caterpillar (larva) into a butterfly (adult). Other arthropod species, in contrast, hatch young that look like small adults. These species lack both larval stages and metamorphosis. Q: Arthropods change into the adult form in a process called what? Choices: - parthenogenesis - spontaneous mutation - budding - metamorphosis A:
Ans: metamorphosis
(Q).
Answer the following question given this paragraph: Mineralocorticoids Mineralocorticoids are hormones synthesized by the adrenal cortex that affect osmotic balance. Aldosterone is a mineralocorticoid that regulates sodium levels in the blood. Almost all of the sodium in the blood is reclaimed by the renal tubules under the influence of aldosterone. Because sodium is always reabsorbed by active transport and water follows sodium to maintain osmotic balance, aldosterone manages not only sodium levels but also the water levels in body fluids. In contrast, the aldosterone also stimulates potassium secretion concurrently with sodium reabsorption. In contrast, absence of aldosterone means that no sodium gets reabsorbed in the renal tubules and all of it gets excreted in the urine. In addition, the daily dietary potassium load is not secreted and the retention of K+ can cause a dangerous increase in plasma K+ concentration. Patients who have Addison's disease have a failing adrenal cortex and cannot produce aldosterone. They lose sodium in their urine constantly, and if the supply is not replenished, the consequences can be fatal. Q: Mineralocorticoids are hormones synthesized by the adrenal cortex that affect what balance, by regulating sodium and water levels? Choices: - blood pressure - homeostasis - equilibrium - osmotic A:
(A).
osmotic
Ques:Answer the following question given this paragraph: In the above equation for pressure, force is expressed in Newtons (N) and area is expressed in square meters (m 2 ). Therefore, pressure is expressed in N/m 2 , which is the SI unit for pressure. This unit is also called the Pascal (Pa) . It is named for the scientist Blaise Pascal whose discoveries about pressure in fluids led to a law of the same name. Pressure may also be expressed in the kilopascal (kPa), which equals 1000 Pascals. For example, the correct air pressure inside a mountain bike tire is usually about 200 kPa. Q: What unit of pressure is named for the scientist whose discoveries about pressure in fluids led to a law of the same name? Choices: - ohm - newton - joule - pascal A:

Ans:pascal
Question: Answer the following question given this paragraph: Positive Feedback Positive feedback intensifies a change in the body's physiological condition rather than reversing it. A deviation from the normal range results in more change, and the system moves farther away from the normal range. Positive feedback in the body is normal only when there is a definite end point. Childbirth and the body's response to blood loss are two examples of positive feedback loops that are normal but are activated only when needed. Childbirth at full term is an example of a situation in which the maintenance of the existing body state is not desired. Enormous changes in the mother's body are required to expel the baby at the end of pregnancy. And the events of childbirth, once begun, must progress rapidly to a conclusion or the life of the mother and the baby are at risk. The extreme muscular work of labor and delivery are the result of a positive feedback system (Figure 1.11). Q: What type of feedback intensifies a change in the body's physiological condition rather than reversing it? Choices: - negative feedback - neutral feedback - susceptible feedback - positive feedback A:
Answer:
positive feedback