lai cây thân cao hạt tròn và thân thân thấp hạt dài cho f1 tiếp tục thụ phấn thu được f2 386 cây trong đó có 23 cây thân thấp hạt trơn câu a biện luận và viết sơ đồ lai

What came first egg or chicken? and is tomato a vegetable or a fruit?

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

Approximately what portion of the foods that we eat have been genetically modified in some way? a.fewer than 10% b.about 50% c.nearly 100%