Q: Q: Exothermic reactions in organisms are called what? Choices: - nuclear reactions - nebular reactions - biogenic reactions - catabolic reactions A:
A: catabolic reactions

Q: Q: What produces gametes with different alleles? Choices: - prokaryotes - anthocyanins - chromatids - heterozygotes A:
A: heterozygotes

Q: Q: Convex lenses are thicker in the middle than at the edges so they cause rays of light to converge, or meet, at a point called what? Choices: - the center - the base - the apex - focus A:
A: focus

Q: Q: Nitrogen is an important macronutrient because it is part of nucleic acids and proteins. atmospheric nitrogen, which is the diatomic molecule n2, or dinitrogen, is the largest pool of nitrogen in these? Choices: - gas planets - desert biomes - aquatic ecosytems - terrestrial ecosystems A:
A: terrestrial ecosystems