Oxygen liberated during photosynthesis is coming m6to create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.

Correct Option: B

Oxygen liberated during photosynthesis is coming m6to create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.

The generation and maintenance of all our life processes are supported by four basic components: carbohydrates, water, proteins and energy. Most scientists agree that oxygen is actually the over-riding key ingredient in all four of these life components. 80% of all our metabolic energy production is created by oxygen! The human body is largely composed of oxygen. All metabolic processes in the body are regulated by oxygen.

Correct Option: A

The generation and maintenance of all our life processes are supported by four basic components: carbohydrates, water, proteins and energy. Most scientists agree that oxygen is actually the over-riding key ingredient in all four of these life components. 80% of all our metabolic energy production is created by oxygen! The human body is largely composed of oxygen. All metabolic processes in the body are regulated by oxygen.

Low-calorie sweeteners are sugar substitutes that have zero calories and do not raise blood glucose levels through eating them, which makes them a preferable choice for diabetic people over sugar.

Correct Option: D

Low-calorie sweeteners are sugar substitutes that have zero calories and do not raise blood glucose levels through eating them, which makes them a preferable choice for diabetic people over sugar.

In 1883, Koch worked with a French research team in Alexandria, Egypt, studying cholera. Koch identified the vibrio bacterium that caused cholera.

Correct Option: A

In 1883, Koch worked with a French research team in Alexandria, Egypt, studying cholera. Koch identified the vibrio bacterium that caused cholera.

Apples are a great, healthy food, but even with the skin they do not contain a large amount of iron. Apples contain 11 milligrams of iron per 100 grams. A gram is a measure of weight. Fruit as a food group is not a great iron source but it does play an important role in our ability to absorb iron. Fruit is often loaded with vitamin C, a vitamin that will actually help to utilize the iron in vegetarian foods; apples are a modest source of vitamin C.

Correct Option: B

Apples are a great, healthy food, but even with the skin they do not contain a large amount of iron. Apples contain 11 milligrams of iron per 100 grams. A gram is a measure of weight. Fruit as a food group is not a great iron source but it does play an important role in our ability to absorb iron. Fruit is often loaded with vitamin C, a vitamin that will actually help to utilize the iron in vegetarian foods; apples are a modest source of vitamin C.