Q: What is the body system that digests food mechanically and chemically and absorbs nutrients? Read this paragraph and choose the correct option from the provided answers: The digestive system is the body system that digests food mechanically and chemically and absorbs nutrients. The digestive system also eliminates solid food waste. The major organs of the digestive system include the mouth, esophagus, stomach, and small and large intestines. These organs make up the long tube called the gastrointestinal (GI) tract, which goes from the mouth to the anus. Choices: - metabolism system - internal system - ingestion system - digestive system A:
digestive system

(Question)
Q: Osmotic pressure is important in biological systems because cell walls are what? Read this paragraph and choose the correct option from the provided answers: Osmotic pressure is important in biological systems because cell walls are semipermeable membranes. In particular, when a person is receiving intravenous (IV) fluids, the osmotic pressure of the fluid needs to be approximately the same as blood serum; otherwise bad things can happen. Figure 11.4 "Osmotic Pressure and Red Blood Cells" shows three red blood cells: Figure 11.4 "Osmotic Pressure and Red Blood Cells"a shows a healthy red blood cell. Figure 11.4 "Osmotic Pressure and Red Blood Cells"b shows a red blood cell that has been exposed to a lower concentration than normal blood serum (a socalled hypotonic solution); the cell has plumped up as solvent moves into the cell to dilute the solutes inside. Figure 11.4 "Osmotic Pressure and Red Blood Cells"c shows a red blood cell exposed to a higher concentration than normal blood serum (hypertonic); water leaves the red blood cell, so it collapses onto itself. Only when the solutions inside and outside the cell are the same (isotonic) will the red blood cell be able to do its job. Choices: - impassable - theonym membranes - variably membranes - semipermeable membranes A:
(Answer)
semipermeable membranes

Ques: Q: The measure of how much a given volume of matter decreases when placed under pressure is called? Read this paragraph and choose the correct option from the provided answers: Compressibility is the measure of how much a given volume of matter decreases when placed under pressure. If we put pressure on a solid or a liquid, there is essentially no change in volume. The atoms, ions, or molecules that make up the solid or liquid are very close together. There is no space between the individual particles, so they cannot pack together. Choices: - elasticity - solubility - malleability - compressibility A:
Ans: compressibility

(Q).
Q: What part of a spider is equipped with poison glands? Read this paragraph and choose the correct option from the provided answers: Choices: - baleen - pedipalps - vacuole - chelicerae A:
(A).
chelicerae

Ques:Q: In alcoholic fermentation , which acid changes to alcohol and carbon dioxide? Read this paragraph and choose the correct option from the provided answers: In alcoholic fermentation , pyruvic acid changes to alcohol and carbon dioxide. This is shown in Figure below . NAD + also forms from NADH, allowing glycolysis to continue making ATP. This type of fermentation is carried out by yeasts and some bacteria. It is used to make bread, wine, and biofuels. Choices: - rain - chloride - lipoic - pyruvic A:

Ans:pyruvic

Ques:Q: In the freshwater flatworms, protonephridia serve chiefly in what? Read this paragraph and choose the correct option from the provided answers: Choices: - enculturation - excretion - thermoregulation - osmoregulation A:

Ans:
osmoregulation