Answer the following question given this paragraph: Soil is a renewable resource. Sometimes it is lost faster than it can be replaced. Q: What kind of resource is soil? Choices: - nonrenewable - finite - viable - renewable A:
renewable
(Question)
Answer the following question given this paragraph: Potassium is a soft, silvery metal that ignites explosively in water. It easily loses its one valence electron to form positive potassium ions (K + ), which are needed by all living cells. Potassium is so important for plants that it is found in almost all fertilizers, like the one shown here. Potassium is abundant in Earth's crust in minerals such as feldspar. Q: Potassium is a soft, silvery metal that ignites explosively in what? Choices: - air - cold - acid - water A:
(Answer)
water
Ques: Answer the following question given this paragraph: Glandular Epithelium A gland is a structure made up of one or more cells modified to synthesize and secrete chemical substances. Most glands consist of groups of epithelial cells. A gland can be classified as an endocrine gland, a ductless gland that releases secretions directly into surrounding tissues and fluids (endo- = "inside"), or an exocrine gland whose secretions leave through a duct that opens directly, or indirectly, to the external environment (exo- = "outside"). Q: Which ductless gland releases secretions directly into surrounding tissues and fluids? Choices: - marrow gland - pineal gland - adrenal glands - endocrine gland A:
Ans: endocrine gland
(Q).
Answer the following question given this paragraph: produced in cells located in the stomach wall. When food enters the stomach after a period of fasting, pepsinogen is converted to its active formpepsinin a series of steps initiated by the drop in pH. Pepsin catalyzes the hydrolysis of peptide linkages within protein molecules. It has a fairly broad specificity but acts preferentially on linkages involving the aromatic amino acids tryptophan, tyrosine, and phenylalanine, as well as methionine and leucine. Protein digestion is completed in the small intestine. Pancreatic juice, carried from the pancreas via the pancreatic duct, contains inactive enzymes such as trypsinogen and chymotrypsinogen. They are activated in the small intestine as follows (Figure 20.7 "Activation of Some Pancreatic Enzymes in the Small Intestine"): The intestinal mucosal cells secrete the proteolytic enzyme enteropeptidase, which converts trypsinogen to trypsin; trypsin then activates chymotrypsinogen to chymotrypsin (and also completes the activation of trypsinogen). Both of these active enzymes catalyze the hydrolysis of peptide bonds in protein chains. Chymotrypsin preferentially attacks peptide bonds involving the carboxyl groups of the aromatic amino acids (phenylalanine, tryptophan, and tyrosine). Trypsin attacks peptide bonds involving the carboxyl groups of the basic amino acids (lysine and arginine). Pancreatic juice also contains procarboxypeptidase, which is cleaved by trypsin to carboxypeptidase. The latter is an enzyme that catalyzes the hydrolysis of peptide linkages at the free carboxyl end of the peptide chain, resulting in the stepwise liberation of free amino acids from the carboxyl end of the polypeptide. Figure 20.7 Activation of Some Pancreatic Enzymes in the Small Intestine. Q: When food enters the stomach after a period of fasting, a drop in what initiates the conversion of pepsinogen to pepsin? Choices: - calcium - white blood cells - acid - ph A:
(A).
ph
Ques:Answer the following question given this paragraph: The ABO blood group system is important if a person needs a blood transfusion. A blood transfusion is the process of putting blood or blood products from one person into the circulatory system of another person. The blood type of the recipient needs to be carefully matched to the blood type of the donor. That's because different blood types have different types of antibodies, or proteins, released by the blood cells. Antibodies attack strange substances in the body. This is a normal part of your immune response, which is your defense against disease. Q: Matching donor and recipient blood types is important because different blood types have different types of what? Choices: - antigens - charges - coagulants - antibodies A:

Ans:antibodies
Question: Answer the following question given this paragraph: The canister on the left contains a gas at a certain pressure. The attached air pump is then used to double the amount of gas in the canister. Since the canister cannot expand, the increased number of air molecules will strike the inside walls of the canister twice as frequently as they did before. The result is that the pressure inside the canister doubles. As you might imagine, if more and more air is continually added to a rigid container, it may eventually burst. Reducing the number of molecules in a rigid container has the opposite effect and the pressure decreases. Q: Reducing the number of molecules in a rigid container causes what to decrease? Choices: - velocity - demand - energy - pressure A:
Answer:
pressure