Q: The superior vena cava and the inferior vena cava are veins that return blood lacking what to the heart? Read this paragraph and choose the correct option from the provided answers: The veins that return oxygen-poor blood to the heart are the superior vena cava and the inferior vena cava . The pulmonary veins return oxygen-rich blood from the lungs to the heart. The pulmonary veins are the only veins that carry oxygen-rich blood. Choices: - hemoglobin - carbon dioxide - nitrogen - oxygen A:
oxygen

Q: When the maximum amount of solute has been dissolved in a given amount of solvent, we say that the solution is what? Read this paragraph and choose the correct option from the provided answers: When the maximum amount of solute has been dissolved in a given amount of solvent, we say that the solution is saturated with solute. When less than the maximum amount of solute is dissolved in a given amount of solute, the solution is unsaturated. These terms are also qualitative terms because each solute has its own solubility. A solution of 0.00019 g of AgCl per 100 g of H2O may be saturated, but with so little solute dissolved, it is also rather dilute. A solution of 36.1 g of NaCl in 100 g of H2O is also saturated but rather concentrated. Ideally, we need more precise ways of specifying the amount of solute in a solution. We will introduce such ways in Section 11.2 "Quantitative Units of Concentration". In some circumstances, it is possible to dissolve more than the maximum amount of a solute in a solution. Usually, this happens by heating the solvent, dissolving more solute than would normally dissolve at regular temperatures, and letting the solution cool down slowly and carefully. Such solutions are called supersaturated solutions and are not stable; given an opportunity (such as dropping a crystal of solute in the solution), the excess solute will precipitate from the solution. It should be obvious that some solutes dissolve in certain solvents but not others. NaCl, for example, dissolves in water but not in vegetable oil. Beeswax dissolves in liquid hexane but not water. What is it that makes a solute soluble in some solvents but not others? The answer is intermolecular interactions. The intermolecular interactions include London dispersion forces, dipole-dipole interactions, and hydrogen bonding (as described in Chapter 10 "Solids and Liquids"). From experimental studies, it has been determined that if molecules of a solute experience the Saylor URL: http://www. saylor. org/books. Choices: - blended - used - empty - saturated A:
saturated

Q: Q: What do you call the horizontal stems of a strawberry plant that run over the ground surface? Read this paragraph and choose the correct option from the provided answers: Strawberry plants have horizontal stems called stolons that run over the ground surface. If they take root, they form new plants. Choices: - root volunteers - climbing vines - sprouts - stolons A:
A: stolons

Question: Q: What are the rod-like structures made of short microtubules that play an important part in cellular division? Read this paragraph and choose the correct option from the provided answers: Centrioles are rod-like structures made of short microtubules. Nine groups of three microtubules make up each centriole. Two perpendicular centrioles make up the centrosome . Centrioles are very important in cellular division, where they arrange the mitotic spindles that pull the chromosome apart during mitosis. Choices: - cilia - mitochondria - fibrils - centrioles A:
Answer: centrioles

*Question*
Q: Digestion of polysaccharides and disaccharides in the small intestine produces glucose and other? Read this paragraph and choose the correct option from the provided answers: Digestion of polysaccharides and disaccharides in the small intestine produces glucose and other monosaccharides. Choices: - nitrates - protein - fat - monosaccharides A:
**Answer**
monosaccharides

Q: Q: Electrons exist only where the wave is what? Read this paragraph and choose the correct option from the provided answers: In the 1920s, physicists discovered that electrons do not travel in fixed paths. In fact, they found that electrons only have a certain chance of being in any particular place. They could only describe where electrons are with mathematical formulas. That's because electrons have wave-like properties as well as properties of particles of matter. It is the "wave nature" of electrons that lets them exist only at certain distances from the nucleus. The negative electrons are attracted to the positive nucleus. However, because the electrons behave like waves, they bend around the nucleus instead of falling toward it. Electrons exist only where the wave is stable. These are the orbitals. They do not exist where the wave is not stable. These are the places between orbitals. Choices: - seen - spinning - solid - stable A:
A: stable