Q: Q: What do atoms become if they lose or gain electrons? Read this paragraph and choose the correct option from the provided answers: Atoms are electrically neutral, but if they lose or gain electrons they become charged particles called ions. Choices: - toxins - particles - particulates - ions A:
A: ions

Q: Q: What process do all species use to make the next generation? Read this paragraph and choose the correct option from the provided answers: All living things reproduce to make the next generation. Organisms that do not reproduce will go extinct. As a result, there are no species that do not reproduce ( Figure below ). Some organisms reproduce asexually ( asexual reproduction ), especially single-celled organisms, and make identical copies (or clones) of themselves. Other organisms reproduce sexually ( sexual reproduction ), combining genetic information from two parents to make genetically unique offspring. Choices: - separation - differentiation - variation - reproduction A:
A: reproduction

Q: Q: What do vertebrate chordates possess that invertebrate chordates do not? Read this paragraph and choose the correct option from the provided answers: Chordates include vertebrates and invertebrates that have a notochord. Chordates also have a post-anal tail, dorsal hollow nerve cord, and pharyngeal slits. Vertebrate chordates have a backbone, while invertebrate chordates do not. Invertebrate chordates include tunicates and lancelets; both are primitive marine organisms. Choices: - parasite - Thumb - Milk production - backbone A:
A: backbone

Q: Q: If solutions of differing osmolarities are present on opposite sides of a semipermeable membrane, solvent will transfer from what to what, in terms of osmolarity of the solution? Read this paragraph and choose the correct option from the provided answers: osmol = M i If more than one solute is present in a solution, the individual osmolarities are additive to get the total osmolarity of the solution. Solutions that have the same osmolarity have the same osmotic pressure. If solutions of differing osmolarities are present on opposite sides of a semipermeable membrane, solvent will transfer from the lower-osmolarity solution to the higher-osmolarity solution. Counterpressure exerted on the highosmolarity solution will reduce or halt the solvent transfer. An even higher pressure can be exerted to force solvent from the high-osmolarity solution to the low-osmolarity solution, a process called reverse osmosis. Reverse osmosis is used to make potable water from saltwater where sources of fresh water are scarce. Choices: - low to low - high to high - high to low - low to high A:
A: low to high