Answer the following question given this paragraph: Oogenesis begins long before birth when an oogonium with the diploid number of chromosomes undergoes mitosis. It produces a diploid daughter cell called a primary oocyte. The primary oocyte, in turn, starts to go through the first cell division of meiosis (meiosis I). However, it does not complete meiosis until much later. The primary oocyte remains in a resting state, nestled in a tiny, immature follicle until puberty. Q: What begins when an oogonium with the diploid number of chromosomes undergoes mitosis? Choices: - germination - morphogenesis - gametogenesis - oogenesis A:
oogenesis
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Answer the following question given this paragraph: Gabbro is a dark dense rock that can be found in oceanic crust. Q: Where is gabbro found? Choices: - volcanoes - forest floor - wetlands - oceanic crust A:
oceanic crust
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Answer the following question given this paragraph: A chemical change occurs whenever matter changes into an entirely different substance with different chemical properties. A chemical change is also called a chemical reaction. Many complex chemical changes occur to produce the explosions of fireworks. An example of a simpler chemical change is the burning of methane. Methane is the main component of natural gas, which is burned in many home furnaces. During burning, methane combines with oxygen in the air to produce entirely different chemical substances, including the gases carbon dioxide and water vapor. You can watch some very colorful chemical changes occurring in the video at this URL:. Q: When matter changes into an entirely different substance with different chemical properties, what has occurred? Choices: - mechanical change - gaseous change - physical change - chemical change A:
chemical change
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Answer the following question given this paragraph: DNA encodes instructions for proteins. RNA copies the genetic code in DNA and carries it to a ribosome. There, amino acids are joined together in the correct sequence to make a protein. Q: Dna encodes instructions for what kind of molecules? Choices: - acids - cells - fats - proteins A:
proteins
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