saliva analysis

Quiz
•
Science
•
University
•
Medium
paula carreño
Used 3+ times
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you put a small amount of salt in your mouth...
there will be chemical and mechanical stimulation
more saliva will be produced
All are correct
the parasympathetic SN is activated
2.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
In a dangerous situation, what hormone is released?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
adding acetic acid to saliva...
mucin precipitates
turns purple
amylase precipitates
all false
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If saliva boils…
works normally
its activity temporarily decreases
increases its activity because it is at the optimal temperature
It denatures, losing its structure and function
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if adding saliva to lugol it turns purple?
amylase has hybridized the starch
the starch has not been hydrolyzed by amylase
there is no presence of starch in the sample
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Benedict's reaction detects...
the presence of oxidizing sugars
sugars that reduce Cu+ to Cu2+
sugars that reduce Cu2+ to Cu+
sugars that oxidize Cu2+ to Cu+
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When does amylase reach its maximum activity, with respect to pH?
when we add H2O, because pH=7
when we add NaHCO3, because pH=6.5
when we add HCl, because pH=6.5
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does amylase stop working in the stomach?
because the stomach secretes HCl
because in the stomach there is an acidic pH
all true
9.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
mucin provides viscosity to saliva
True
False
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