Q: Q: What is a purification process where the components of a liquid mixture are vaporized and then condensed and isolated? Read this paragraph and choose the correct option from the provided answers: Distillation is an effective method to separate mixtures comprised of two or more pure liquids. Distillation is a purification process where the components of a liquid mixture are vaporized and then condensed and isolated. In simple distillation, a mixture is heated and the most volatile component vaporizes at the lowest temperature. The vapor passes through a cooled tube (a condenser), where it condenses back into its liquid state. The condensate that is collected is called distillate. Choices: - conduction - sterilization - dispersion - distillation A:
A: distillation

Q: Q: What must replicate in the cell cycle before meiosis i takes place? Read this paragraph and choose the correct option from the provided answers: Meiosis I begins after DNA replicates during interphase of the cell cycle. In both meiosis I and meiosis II , cells go through the same four phases as mitosis - prophase, metaphase, anaphase and telophase. However, there are important differences between meiosis I and mitosis. The eight stages of meiosis are summarized below. The stages will be described for a human cell, starting with 46 chromosomes. Choices: - cell walls - sperm - meiotic fluid - dna A:
A: dna

Q: Q: How do hydrogen bonds help ions and other polar molecules? Read this paragraph and choose the correct option from the provided answers: 2.2 Water Water has many properties that are critical to maintaining life. It is a polar molecule, allowing for the formation of hydrogen bonds. Hydrogen bonds allow ions and other polar molecules to dissolve in water. Therefore, water is an. Choices: - solidify in water - activate in water - change in water - dissolve in water A:
A: dissolve in water

Q: Q: Why do adult herbivores in a herd surround their young? Read this paragraph and choose the correct option from the provided answers: Herbivores such as zebras and elephants live in herds . Adults in the herd surround and protect the young, who are most vulnerable to predators. Choices: - to protect them from other adult herbivores - to keep them warm on long cold nights - to show them love - to protect them as they are vulnerable to predators A:
A: to protect them as they are vulnerable to predators