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While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what?

asked Jan 8 in Science by BonnyBlundel (510 points)

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Which systems work together to provide cells with the oxygen they need for cellular respiration?

asked Jan 8 in Science by RandiTyler50 (290 points)

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What type of disease occurs when the immune system fails to recognize the body's own molecules?

asked Jan 8 in Science by DirkGilruth9 (170 points)

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Which acids provide the molecular blueprints for all proteins produced in living systems?

asked Jan 8 in Science by NganWae07540 (570 points)

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Which types of compounds are more likely to burn easily?

asked Jan 8 in Science by WendyMortens (390 points)

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When the helium is gone, the stars become what?

asked Jan 8 in Science by EssieThiesse (390 points)

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Where do germline mutations occur in?

asked Jan 8 in Science by ArronMacnama (450 points)

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Which type of arthritis causes the immune system to attack joints?

asked Jan 8 in Science by ChadwickDalz (350 points)

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Which organ system defends the body from pathogens and other causes of disease?

asked Jan 8 in Science by WilliamLangt (250 points)

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Which system transports oxygens to cells?

asked Jan 8 in Science by HeribertoEmb (610 points)

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Which group of metals in the periodic table include elements such as sodium and potassium?

asked Jan 8 in Science by CatharineSar (360 points)

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What type of protein fibers in the cytoskeleton are the narrowest?

asked Jan 8 in Science by JeremyCarr90 (430 points)

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Within a group, the ionization energy decreases as the size of the atom gets what?

asked Jan 8 in Science by AdelaVillago (310 points)

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Which process is glycolysis in during cellular respiration?

asked Jan 8 in Science by TaniaPounds6 (350 points)

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What is the measure of kinetic energy of the particles in matter?

asked Jan 7 in Science by IndianaDasil (590 points)

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Wine, air, and gunpowder are all examples of what kind of common mixtures?

asked Jan 8 in Science by CNBDominique (390 points)

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What type of fronts often bring sudden changes in the weather, including different types of precipitation, depending on the season?

asked Jan 8 in Science by Jeannine13L7 (430 points)

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Why would prokaryotes be chemotrophs instead of phototrophs in a deep-sea hydrothermal vent?

asked Jan 8 in Science by LouisYamada9 (370 points)

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Which cycle tracks the flow of nitrogen through an ecosystem?

asked Jan 8 in Science by ClairFww2832 (430 points)

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Which competition leads to one species going extinct or both becoming more specialized?

asked Jan 8 in Science by DeanaSears12 (390 points)

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