Ques:Q: Proteins include 20 common types of what compounds? Read this paragraph and choose the correct option from the provided answers: There are 20 common amino acids in proteins. There are 64 possible codons, more than enough to code for the 20 amino acids. The genetic code is shown in Figure below . To see how scientists cracked the genetic code, go to this link: http://www. dnalc. org/view/16494-Animation-22-DNA-words-are-three-letters-long-. html . Choices: - mitochondria - rna acids - dna - amino acids A:

Ans:amino acids
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Ques:Q: What kind of reaction adds water to an organic molecule and breaks the large molecule into smaller molecules? Read this paragraph and choose the correct option from the provided answers: A hydration reaction is the opposite of a dehydration reaction. A hydration reaction adds water to an organic molecule and breaks the large molecule into smaller molecules. Hydration reactions occur in an acidic water solution. An example of hydration reaction is the breaking of peptide bonds in polypeptides. A hydroxide ion (OH - ) and a hydrogen ion (H + ) (both from a water molecule) bond to the carbon atoms that formed the peptide bond. This breaks the peptide bond and results in two amino acids. Choices: - heat reaction - supplementation reaction - aerobic reaction - hydration reaction A:

Ans:hydration reaction
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Ques:Q: The vivid colors of flowers are an adaptation designed to encourage what by animals such as insects and birds? Read this paragraph and choose the correct option from the provided answers: Figure 26.13 These flowers grow in a botanical garden border in Bellevue, WA. Flowering plants dominate terrestrial landscapes. The vivid colors of flowers are an adaptation to pollination by animals such as insects and birds. (credit: Myriam Feldman). Choices: - eating - consumption - flowering - pollination A:

Ans:pollination
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Ques:Q: Where do most ecosystems get their energy from? Read this paragraph and choose the correct option from the provided answers: Most ecosystems get their energy from the Sun. Only producers can use sunlight to make usable energy. Producers convert the sunlight into chemical energy or food. Consumers get some of that energy when they eat producers. They also pass some of the energy on to other consumers when they are eaten. In this way, energy flows from one living thing to another. Choices: - earth - heat - water - sun A:

Ans:
sun
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