Please answer all questions

1		The esopahgus is the region that receives air from the nasal cavities and food from the mouth.
			A)	True
			B)	False
2		The elevated hormone levels of pregnancy probably cause acid reflux.
			A)	True
			B)	False
3		Bacteria breaks down indigestible material, produces B complex vitamins and vitamin K.
			A)	True
			B)	False
4		Essential amino acids must be supplied by a person's diet.
			A)	True
			B)	False
5		Many vitamins act as coenzymes.
			A)	True
			B)	False