The Journey of Food
This is the process of muscular contractions that pushes food down the esophagus and through the digestive tract.
What is peristalsis?
While mechanical digestion begins with physical breakdown of food by the teeth and tongue, what kind of digestion utilizes enzymes to break chemical bonds in food?
What is chemical digestion?
These substances release H+ (hydrogen ions) when added to water.
What are acids?
Acid-base neutralization reactions form these 2 products.
water and salt
To calculate a substance's molar mass, where do you find the atomic masses for each element in the substance?
Look at the Periodic Table.
The gallbladder stores bile, but this accessory organ is responsible for actually producing it.
What is the liver?
Secreted by the salivary glands, this enzyme begins the chemical breakdown of carbohydrates and starches.
What is amylase?
Bases release this specific ion when added to water.
What is the hydroxide ion?
H_2SO_4 + Sr(OH)_2 -> SrSO_4 + 2H_2O
Is Sr(OH)2 an acid, base, neutral?
Sr(OH)2 is a base
This number (6.02×1023) represents the exact amount of particles in one mole of any substance.
What is Avogadro’s number?
The inner wall of the large intestine is smooth, but the small intestine is lined with tiny projections to maximize nutrient absorption.
What are villi?
The pancreas releases bicarbonate to neutralize stomach acid, alongside this specific enzyme designed to break down fats.
What is lipase?
These chemicals (such as bromocresol green and methyl orange) are used to visualize whether a solution is acidic or basic.
What are pH indicators?
What do antacids to the pH in the stomach when they neutralize stomach acid?
raise the pH
What is the molar mass of Al2(SO4)3?
342.2 g/mol
The stomach maintains a highly acidic environment to denature proteins and activate this specific enzyme.
What is pepsin?
After eating a turkey sandwich, the proteins in the turkey will begin their chemical breakdown in this organ.
What is the stomach?
A solution with a pH of 2.0 has this many times more H+ ions than a solution with a pH of 5.0.
pH 2 has 1,000 times more H+ than pH 5
How many water molecules are formed when HBr and Mg(OH)2 react?
2 H2O
If the stomach produces 36.46 g of HCl, how many molecules of HCl does this equal?
6.02xx 10^23 " molecules of HCl"
The small intestine absorbs nutrients and the large intestine houses ___ and absorbs ___.
Houses the microbiome and absorbs water/vitamins
The liver is responsible for metabolizing drugs and toxins using this specific group of enzymes.
What are P450 enzymes?
This substance partially dissociates into OH- and a metal ion when added to water.
Weak base
When you react H2SO3 with KOH, what is the chemical formula for the salt produced?
K2SO3
An antacid tablet contains 3 g of CaCO3. How many moles of CaCO3 does this equal?
0.3 moles of CaCO3