Question

if an egg floats in water, this is a sign that the egg is what? *
○ fresh
○ old
○ bad

what important mineral in eggs assists red blood production and the transportation of oxygen throughout the body? *
○ iron
○ iodine
○ choline
○ folic acid

Explanation:

First Question:

When an egg ages, the air cell inside grows as moisture and carbon dioxide escape through the shell. A larger air cell makes the egg less dense, so it floats. Fresh eggs have a small air cell and sink, while old (not necessarily bad immediately) eggs float. Bad eggs may float too, but the primary sign of an egg floating due to aging (old) is the air cell growth.

Iron is a mineral that is crucial for red blood cell production (hemoglobin in red blood cells needs iron) and oxygen transport (hemoglobin carries oxygen). Iodine is for thyroid function, choline is a nutrient for brain health etc., folic acid is for cell growth and function (especially during pregnancy). Eggs are a source of dietary iron that aids in these processes.

Answer:

B. Old

Second Question: