Bio 139 Lab Exam 2 UPDATED QUESTIONS
AND CORRECT ANSWERS
All of the following are names that can be used to describe the major organs of the digestive
system, except _______ - CORRECT ANSWER intestinal tract
The GI-Tract is also called the digestive tract or the _______ canal - CORRECT
ANSWER alimentary
The esophagus connects which of the following structures? - CORRECT
ANSWER pharynx to stomach
Which of the following produces saliva? - CORRECT ANSWER salivary glands
What is the function of saliva? - CORRECT ANSWER begin carbohydrate digestion
Salivary amylase digests ____ - CORRECT ANSWER carbohydrates
Which enzyme digests carbohydrates? - CORRECT ANSWER Amylase
Which enzyme digests proteins? - CORRECT ANSWER pepsin
Which enzyme digests lipid (fat)? - CORRECT ANSWER lipase
Which enzyme digests DNA or RNA? - CORRECT ANSWER nucleosidase
What is the simple test to detect a present of simple sugars? - CORRECT
ANSWER Benedict's test
, Which color change represents a positive reaction for the presence of simple sugars using the
Benedict's test? - CORRECT ANSWER blue to orange
In the lab experiment, tube 4 had starch in it just like tube 1 and 2 but did not show reaction
with Benedict's reagent. Why not? - CORRECT ANSWER Tube 4 did not have
amylase in ut
In the lab experiment, tube 3 did not have starch or amylase in it. Why did it show positive
reaction with Benedict's reagent? - CORRECT ANSWER Benedict's reagent reacts
with Maltose
In which pH salivary amylase will work best? - CORRECT ANSWER 7
Amylase was shown to work best at a pH of 7 in comparison of a pH of 2. If the stomach
juices have a pH of 2, what do we know about the function of salivary amylase within the
stomach? - CORRECT ANSWER amylase won't function in the stomach very well
What substance in the stomach causes it's low pH? - CORRECT
ANSWER Hydrochloric acid (HCI)
Which is the following digestive functions involves the passage of nutrients from the
alimentary canal into the blood? - CORRECT ANSWER Absorption
What is the name of the volume of air moved in or out of the lungs during a quiet respiratory
cycle? - CORRECT ANSWER tidal volume
Which of the statements correctly describe the vital capacity? - CORRECT
ANSWER All the air that can be exhaled after a full inhalation
A patient who has a low FEV 1% and the low FEF 25-75 in a spirometry test should be
diagnosed with _____ - CORRECT ANSWER obstruction
AND CORRECT ANSWERS
All of the following are names that can be used to describe the major organs of the digestive
system, except _______ - CORRECT ANSWER intestinal tract
The GI-Tract is also called the digestive tract or the _______ canal - CORRECT
ANSWER alimentary
The esophagus connects which of the following structures? - CORRECT
ANSWER pharynx to stomach
Which of the following produces saliva? - CORRECT ANSWER salivary glands
What is the function of saliva? - CORRECT ANSWER begin carbohydrate digestion
Salivary amylase digests ____ - CORRECT ANSWER carbohydrates
Which enzyme digests carbohydrates? - CORRECT ANSWER Amylase
Which enzyme digests proteins? - CORRECT ANSWER pepsin
Which enzyme digests lipid (fat)? - CORRECT ANSWER lipase
Which enzyme digests DNA or RNA? - CORRECT ANSWER nucleosidase
What is the simple test to detect a present of simple sugars? - CORRECT
ANSWER Benedict's test
, Which color change represents a positive reaction for the presence of simple sugars using the
Benedict's test? - CORRECT ANSWER blue to orange
In the lab experiment, tube 4 had starch in it just like tube 1 and 2 but did not show reaction
with Benedict's reagent. Why not? - CORRECT ANSWER Tube 4 did not have
amylase in ut
In the lab experiment, tube 3 did not have starch or amylase in it. Why did it show positive
reaction with Benedict's reagent? - CORRECT ANSWER Benedict's reagent reacts
with Maltose
In which pH salivary amylase will work best? - CORRECT ANSWER 7
Amylase was shown to work best at a pH of 7 in comparison of a pH of 2. If the stomach
juices have a pH of 2, what do we know about the function of salivary amylase within the
stomach? - CORRECT ANSWER amylase won't function in the stomach very well
What substance in the stomach causes it's low pH? - CORRECT
ANSWER Hydrochloric acid (HCI)
Which is the following digestive functions involves the passage of nutrients from the
alimentary canal into the blood? - CORRECT ANSWER Absorption
What is the name of the volume of air moved in or out of the lungs during a quiet respiratory
cycle? - CORRECT ANSWER tidal volume
Which of the statements correctly describe the vital capacity? - CORRECT
ANSWER All the air that can be exhaled after a full inhalation
A patient who has a low FEV 1% and the low FEF 25-75 in a spirometry test should be
diagnosed with _____ - CORRECT ANSWER obstruction
