Q: When cats mark their territory by rubbing their face against an object, they deposit chemicals released by what structures? Read this paragraph and choose the correct option from the provided answers: Some animals deposit chemicals to mark the boundary of their territory. This is why dogs urinate on fire hydrants and other objects. Cats may also mark their territory by depositing chemicals. They have scent glands in their face. They deposit chemicals by rubbing their face against objects. Choices: - whiskers - pituitary glands - taste buds - scent glands A:
scent glands

Q: What is the process resulting in living things with beneficial traits producing more offspring? Read this paragraph and choose the correct option from the provided answers: The other idea is that evolution occurs by natural selection . Natural selection is the process that results in living things with beneficial traits producing more offspring than others. This results in changes in the traits of living things over time. Choices: - fluid selection - Natural choice. - natural change - natural selection A:
natural selection

Q: Q: Nutrients from food are absorbed by the blood for transport around the body as part of what system? Read this paragraph and choose the correct option from the provided answers: In the digestive system, food is digested and its nutrients are absorbed by the blood for transport around the body. The blood is part of the cardiovascular system. Choices: - growth - respiratory - circulatory - digestive A:
A: digestive

Question: Q: Magnetite crystals in lava typically point to what geographic location? Read this paragraph and choose the correct option from the provided answers: Magnetite crystals in the lava point in the direction of the magnetic north pole. The different stripes of magnetic polarity reveal the different ages of the seafloor. Choices: - the equator - magnetic south pole - geographic north pole - magnetic north pole A:
Answer: magnetic north pole

*Question*
Q: Carbonic anhydrase plays what role to achieve a variety of results involving different organs? Read this paragraph and choose the correct option from the provided answers: About 67 percent of the water, Na+, and K+ entering the nephron is reabsorbed in the PCT and returned to the circulation. Almost 100 percent of glucose, amino acids, and other organic substances such as vitamins are normally recovered here. Some glucose may appear in the urine if circulating glucose levels are high enough that all the glucose transporters in the PCT are saturated, so that their capacity to move glucose is exceeded (transport maximum, or Tm). In men, the maximum amount of glucose that can be recovered is about 375 mg/min, whereas in women, it is about 300 mg/min. This recovery rate translates to an arterial concentration of about 200 mg/dL. Though an exceptionally high sugar intake might cause sugar to appear briefly in the urine, the appearance of glycosuria usually points to type I or II diabetes mellitus. The transport of glucose from the lumen of the PCT to the interstitial space is similar to the way it is absorbed by the small intestine. Both glucose and Na+ bind simultaneously to the same symport proteins on the apical surface of the cell to be transported in the same direction, toward the interstitial space. Sodium moves down its electrochemical and concentration gradient into the cell and takes glucose with it. Na+ is then actively pumped out of the cell at the basal surface of the cell into the interstitial space. Glucose leaves the cell to enter the interstitial space by facilitated diffusion. The energy to move glucose comes from the Na+/K+ ATPase that pumps Na+ out of the cell on the basal surface. Fifty percent of Cl and variable quantities of Ca++, Mg++, and HPO 24 are also recovered in the PCT. Recovery of bicarbonate (HCO3) is vital to the maintenance of acidbase balance, since it is a very powerful and fast-acting buffer. An important enzyme is used to catalyze this mechanism: carbonic anhydrase (CA). This same enzyme and reaction is used in red blood cells in the transportation of CO2, in the stomach to produce hydrochloric acid, and in the pancreas to produce HCO3 to... Choices: - blocker - sequence - inhibition - enzyme A:
**Answer**
enzyme

Q: Q: Conduction from the core has what effect on the lower mantle? Read this paragraph and choose the correct option from the provided answers: Conduction from the core heats the lower mantle. Choices: - it vibrates it - it makes it rotate - it cools it - it heats it A:
A: it heats it