Test 3 Nutreitional sciences
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Jan is about to eat a slice of pizza. In what order will her body process the pizza within her GI tract?
a) mouth, esophagus, ileum, duodenum
b) mouth, esophagus, small intestine, stomach, large intestine
c)mouth, esophagus, stomach, duodenum, large intestine
Large meals leave your stomach faster than small meals T/F
The reaction H2---->2H+ 2E- represents
As a result of cancer, Mike had to have part of his cecum removed. Mike is at less risk for nutrient absorbtion problems than if he had his ____ removed.
b) small intestine
The chemical reaction NaAl (SO4)+ 3 NaHCO3----> Al (OH)3 + 2 Na2SO4 + 3 CO2 represents what usually happens when baking powder reacts chemically while making a cake. Tis is an example of_______.
a) A change in PH
c)a redox reaction
What system controls physiological functions through production and release of hormones?
Water soluble nutrients absorbed from the digestive tract ae circulated directly to the:
Fat soluble molecules eventually enter the blood by way of the _____
b) pulmonary circulation
d) thoracid duct
Positively charged ions are called cations, while negatively charged ions are called anions
While driving, you see an ad for your favrite fast food place and your stomach begins to growl, what phase of digestion is occuring?
In the notation 5 C6H12)6 what does the 5 indicate?
a) the number of atoms in the molecule
b)the number of different molecules present
c) the number of molecules present
During endocytosis substances move from the intracellular into the extracellular environment T/F
Pancreatic enzymes are released into the duodenum in response to:
b) pancreatic amylase
Digestive enzymes break starch and protein into smaller components through the chemical process of:
Which subatomic units are found in the nucleus of an atom?
a) neutrons and protons
b) neutrons and electrons
c)Quarks and electrons
Within the bodys cells, there are small membrane-bound compartments called _____ tha carry out specialized functions that are critical for life.
b) functioning spaces
Active transport systems include those that are carrier-mediated and _____ transport.
By detecting an imbalance, communicating information avout this imbalance, and responding to this imbalance, the body is able to maintain_______.
The fluid that surrounds the interstatial fluid that surrounds cells is called the intracellular fluid
Substances cross cell membranes via active and passive transport T/F
In the GI tract, there is a single sphincter that regulates flow of luminal contents from one organ to the next.
Vitamin _____ is produced in the intestinal bacteria
Structures called _____ regulate the flow of material through the GI tract
The secretions needed for digestion include water, acid, enzymes, and ____
What does the muscularis do?
a) stimulates the contraction of the muscles that control the beating of the heart
b)controls the contraction and expansion of the lungs
c) enables food to mix and move through the GI tract
Meat turns brown when exposed to air because the iron containing proteins _____.
a)become contaminated with bacteria
b) are reduced
c) are oxidized
What is it that regulates facilitated diffusion?
a) net movement of water across the cell membrane
b) level of energy available to support the transport
c) membrane-bound transport protein
IBD, which is characterized by inflammation of the lining of the GI tract, is classified as an ______ disease
The hormone insulin, which is roduced by the cells of the pancreas, is released into the surrounding extracellulat fluid by an energy requiring process called _____.
What are proteins, carbohydrates and lipids composed of?
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