MATH 136 Science exam Questions and and answers

________ Inheritance refers to any tree that is controlled by more than one gene. - -Polygenic A desert ecosystem includes grasses, mice, snakes, and hawks. As you move up the energy pyramid in this ecosystem, each level has______ energy than the one below. - -Less A female human has what chromosomes? - -Two X chromosomes A gene Is a section of DNA within a chromosome that codes for a what? - -Specific proteins A maple tree produces male and female flowers. Which term best describes the maple? - -Angiosperm A ribosome may fold incorrectly if _______ brings the wrong amino acid to the ribosome to assemble the protein. - -tRNA According to the________________, there is a fixed amount of nitrogen on earth. Nitrogen that exists in the air is fixed by ____________ in root nodules. This allows it to exist in the soil. ________ then use the nitrogen to make proteins and other complex compounds. When animals eat the plants, the nitrogen is then transferred to their bodies. When these organisms die, the nitrogen is broken down by ________ and return to the air by bacteria. - -Law of Conservation of Mass; bacteria; plants; fungi