Answer the following question given this paragraph: 16.2 | Digestive System By the end of this section, you will be able to: Explain the processes of digestion and absorption Explain the specialized functions of the organs involved in processing food in the body Describe the ways in which organs work together to digest food and absorb nutrients Describe the essential nutrients required for cellular function that cannot be synthesized by the animal body Describe how excess carbohydrates and energy are stored in the body All living organisms need nutrients to survive. While plants can obtain nutrients from their roots and the energy molecules required for cellular function through the process of photosynthesis, animals obtain their nutrients by the consumption of other organisms. At the cellular level, the biological molecules necessary for animal function are amino acids, lipid molecules, nucleotides, and simple sugars. However, the food consumed consists of protein, fat, and complex carbohydrates. Animals must convert these macromolecules into the simple molecules required for maintaining cellular function. The conversion of the food consumed to the nutrients required is a multistep process involving digestion and absorption. During digestion, food particles are broken down to smaller components, which are later absorbed by the body. This happens by both physical means, such as chewing, and by chemical means. One of the challenges in human nutrition is maintaining a balance between food intake, storage, and energy expenditure. Taking in more food energy than is used in activity leads to storage of the excess in the form of fat deposits. The rise in obesity and the resulting diseases like type 2 diabetes makes understanding the role of diet and nutrition in maintaining good health all the more important. Q: The conversion of food that is consumed to nutrients involves what two major processes: Choices: - secrete and absorption - untangling and absorption - absorption and excretion - digestion and absorption A:
digestion and absorption
Answer the following question given this paragraph: Most prokaryotes have one or more long, thin "whips" called flagella (flagellum, plural) . You can see flagella in Figure below . Flagella help prokaryotes move toward food or away from toxins. Each flagellum spins around a fixed base. This causes the cell to roll and tumble. Q: What thin whip-like structures help prokaryotes move toward food or away from toxins? Choices: - sporangia - cilia - antennae - flagella A:
flagella
Q: Answer the following question given this paragraph: The rate of evaporation depends only on the surface area of the liquid and is essentially constant. The rate of condensation depends on the number of molecules in the vapor phase and increases steadily until it equals the rate of evaporation. Q: The rate of evaporation depends only on the surface area of the liquid and is essentially constant. the rate of condensation depends on the number of molecules in the vapor phase and increases steadily until it equals the rate of this? Choices: - accumulation - condensation - absorption - evaporation A:
A: evaporation
Question: Answer the following question given this paragraph: In some chordates, all four traits persist throughout life and serve important functions. However, in many chordates, including humans, all four traits are present only during the embryonic stage. After that, some of the traits disappear or develop into other organs. For example, in humans, pharyngeal slits are present in embryos and later develop into the middle ear. Q: In humans, pharyngeal slits later develop into what? Choices: - inner ear - outer ear - long ear - middle ear A:
Answer: middle ear
*Question*
Answer the following question given this paragraph: 7.4 Conservative Forces and Potential Energy 9. What is a conservative force? 10. The force exerted by a diving board is conservative, provided the internal friction is negligible. Assuming friction is negligible, describe changes in the potential energy of a diving board as a swimmer dives from it, starting just before the swimmer steps on the board until just after his feet leave it. Define mechanical energy. What is the relationship of mechanical energy to nonconservative forces? What happens to mechanical energy if only conservative forces act? 12. What is the relationship of potential energy to conservative force?. Q: The force exerted by a diving board is conservative, provided the internal friction is this? Choices: - static - intrinsic - significant - negligible A:
**Answer**
negligible
*Question*
Answer the following question given this paragraph: An air mass takes on the conditions of the area where it forms. For example, a continental polar air mass has cold dry air. A maritime polar air mass has cold moist air. Which air masses have warm moist air? Where do they form?. Q: What kind of air does a continental polar air mass hold? Choices: - cool moist air - frigid wet air - warm dry air - cold dry air A:
**Answer**
cold dry air