Juan and his science class are constructing models of sugar crystals. He wants his model to show how the sugar molecules move in
the crystal. He is using plastic foam balls to represent the sugar molecules. How should he put the plastic foam balls together to make his model? O A. Connect them with stiff springs B. Fill a clear cube with them O C. Glue them together D. Place a few of them in a plastic bag
1 answer:
Answer:
The correct answer is option B. "Fill a clear cube with them".
Explanation:
Sugar crystals, colloquially known as "rock candy", are conglomerates of sugar molecules that are formed when sugar-saturated water are cooled. Sugar crystals are arranged in a three dimensional repeating pattern, forming a cube like structure. Therefore, Juan could fill a clear cube with its plastic foam balls to represent sugar crystals. I attached an image of sugar crystals dissolving in water as reference.
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Answer:
50% (Answer Choice 3)
Explanation:
One important thing to keep in mind when solving sex-linked Punnett Squares is that males can never be carriers, since they have one X and one Y chromsome. Thus, it is only possible for females to be carriers, because they have two X chromsomes. Because of this, before solving the problem, you already know that 50% or less of the offspring can be carriers, thus eliminating two answer choices right off the bat. Now, the only way to find out whether 25% or 50% of the offspring are carriers is to solve the Punnett Square. The two female genotypes resulting from the cross is and
. Since both offspring have only one allele for color-blindness, both are carriers, which means that the answer is 50%.