Answer the following question given this paragraph: Exocytosis The reverse process of moving material into a cell is the process of exocytosis. Exocytosis is the opposite of the processes discussed above in that its purpose is to expel material from the cell into the extracellular fluid. Waste material is enveloped in a membrane and fuses with the interior of the plasma membrane. This fusion opens the membranous envelope on. Q: The reverse process of moving material into a cell is the process of what? Choices: - endocytosis - proteolysis - osmosis - exocytosis A:
exocytosis
Answer the following question given this paragraph: When a fluorine atom gains an electron, it becomes a negative fluoride ion. Q: When a fluorine atom gains an electron, it becomes a negative what? Choices: - hydrogen ion - sulfide ion - potassium ion - fluoride ion A:
fluoride ion
Q: Answer the following question given this paragraph: Competition between different species is called interspecific competition. It might lead to the less well-adapted species going extinct. Or it might lead to one or both species evolving specialized adaptations. For example, competing species might evolve adaptations that allow them to use different food sources. You can see an example in Figure below . Q: A potential cause of extinction, competition between different species is called what? Choices: - parasitism - intraspecific competition - mutualism - interspecific competition A:
A: interspecific competition
Question: Answer the following question given this paragraph: Ionic compounds have positive ions and negative ions. Q: What compound has positive and negative ions? Choices: - hydrocarbon - protein - covalent - ionic A:
Answer: ionic
*Question*
Answer the following question given this paragraph: Electron Shells and the Bohr Model It should be stressed that there is a connection between the number of protons in an element, the atomic number that distinguishes one element from another, and the number of electrons it has. In all electrically neutral atoms, the number of electrons is the same as the number of protons. Thus, each element, at least when electrically neutral, has a characteristic number of electrons equal to its atomic number. An early model of the atom was developed in 1913 by Danish scientist Niels Bohr (18851962). The Bohr model shows the atom as a central nucleus containing protons and neutrons, with the electrons in circular orbitals at specific distances from the nucleus, as illustrated in Figure 2.6. These orbits form electron shells or energy levels, which are a way of visualizing the number of electrons in the outermost shells. These energy levels are designated by a number and the symbol "n. " For example, 1n represents the first energy level located closest to the nucleus. Q: What is the number of electrons equal to in every electrically neutral atom? Choices: - Electrons - molecules - nucleus - protons A:
**Answer**
protons
*Question*
Answer the following question given this paragraph: About half the energy used in the U. S. is used in homes and for transportation. Businesses, stores, and industry use the other half. Q: Homes and transportation use what percent of all energy in the u.s.? Choices: - twenty five - fifteen - forty - half (fifty) A:
**Answer**
half (fifty)