mid term study Flashcards
In the pH experiment, which solution was the most acidic?
vinegar
In the pH experiment, Which solution was the most basic?
ammonia
Is milk an acid or base?
acid (pH:6)
What was the pH of Urea?
7
What was the pH of Sodium chloride(NaCl)?
7
What was the pH of baking soda?
8
In the pH experiment, what did a blue stain meant in the litmus paper?
basic solution
In the pH experiment, what did a red stain meant in the litmus paper?
acidic solution
What is the range in pH for an acid?
1-6
What is the range in pH for a base?
8-14
What organic acid is found in vinegar?
acetic acid
What acid is found on limes?
citric acid
What acid is found in soda?
phosphoric acid
What is the pH of the duodenum?
7.7
What is the pH of saliva?
7
What is the pH of the stomach?
2.5
What is the pH of human blood?
7.4
What does the Benedict’s test check for?
reducing sugars
During the Benedict test, how long is the test tube supposed to be boiling?
about 5 minutes
What does Idione test for?
startch
During the starch experiment, what color(s) did it turn when starch was present?
purple/black
What was the biuret test for?
protein
During the biuret test, what color(s) did represented that protein was present?
purple
What did Sudan IV test for?
lipids
During the Sudan IV test, what was the color that showed the presence of lipids?
red
What protein is found in the dairy products?
casein
What kind of macromolecule is found on fruits?
carbohydrates
What is the glycemic index?
rating system of foods that contain carbohydrates
What amoeba did we view in lab?
amoeba proteus
What is the most deadly amoeba?
Naegleria fowleri (brain eating amoeba)
What was the name of the paramecium that we view in class?
paramecium caudatum
In what environment are amoebas found?
aqueous environment
How do amoeba move around?
creation of pseudopodia (fake foot)
What does euglena use to move?
flagella
What is the cell wall of a plant cell made out of?
cellulose
What is the cell wall of a bacteria made out of?
peptidoglycan
What is the temperature for an ice bath?
4°C
What is room temp?
23°C
What is the warm water temperature?
55°C
How does temp affect diffusion?
the hotter it is, the faster it will diffuse
How does molecular weight affect the rate of diffusion?
The heavier molecule will diffuse slower than the lighter molecules
How permeable was the dialysis tubing?
semi-permeable
Is dialysis tubing permeable to albumin?
no
Is dialysis tubing permeable to sugar?
yes
Is dialysis tubing permeable to iodine?
yes
Is dialysis tubing permeable to starch?
no
during the dialysis tubing experiment, how long did it had to wait for the iodine to diffuse?
1 hour
what was the name of the machine used to measure the light?
spectrophotometer
A?
ocular lenses
b?
revolving nosepiece
c?
objective lenses
d?
stage
e?
condenser
f?
light source
g?
light knob
h?
arm
i?
coarse adjust knob
j?
fine adjust knob
