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A 6th grader begins to make his sandwich for lunch. There are two loaves of bread in the pantry. When he opens the first loaf, he notices a growth of mold on the first slice on bread. When he opens the second loaf, all of the slices are mold-free. Based on his observations, the student might draw what conclusion regarding the two loaves of bread? A) The first loaf is older than the second loaf. B) The second loaf was kept at a cooler temperature than the first loaf. C) The first loaf had a higher starch content allowing for more mold growth. D) The first loaf had been exposed to fungal spores previously while the second loaf had not.

Answer :

Answer: A) The first loaf is older than the second loaf.

Explanation:

A 6th grader students will think the first bread is older this is because the sight of mould on our food substance seemly means the food has stayed too long and spoilt and that is why the mould are growing.

Mould are microscopic organism that are found usually on different surfaces of food,animal products, buildings, furnitures.

Mould makes food unfriendly for consumption and leads to spoilage.

Mould thrive well in cool, dark area and do not survive a very low temperature i.e freezing temperature.

Moulds are of different type ;Breakfast mould, furniture mould, penicillium bread mold.

Bread mould is a mould that grows on bread surface due to the nutrients supply from it. Mould don't produce food hence depends on other food substance for their feeding.

Some mould are beneficial in pharmaceutical industries, food industries.

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Answer:

The answer is "D"

Explanation:

The first loaf had been exposed to fungal spores previously while the second loaf had not. Since all cells come from other, pre-existing cells, the growth of the mold must have originated from a mold spore that landed on the bread in the first loaf.

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