Lab Practical Exam Flashcards
- Water + Biuret (or Water + Benedict’s) in a test tube was which type of control?
Negative control
Albumin + Biuret OR Glucose + Benedict test tubes were both which type of control?
Positive control
Water and Biruet colors
Aqua-blue to green = negative/ Yellow to orange = positive
Albumin and Biret colors
Denim-blue = negative/ Purple positive
What was the name of the red solution that was used in the lipid test?
Sudan IV
Starch will test ______for protein
negative
Starch and onion
There is no starch present in the onion
Starch and potato
There is starch present in the potato
Starch and carrot
There is starch present in the carrot
Sugar is ____ in water
Absent
Sugar is ____ in glucose
present
Sugar is ____ in onion juice
Present
Sugar is _____in potato juice
Absent
The Irish Potato tested _________ for starch but tested __________ for simple sugars
Positive/Negative
What color did the ONION JUICE on turn at the end of the simple sugar test?
Yellow
What color did the glucose turn?
Turned red
What color did the water turn
Blue
What color did the potato juice turn
blue
Where lipids present in the water+oil?
Yes, only in the oil
Are lipids present in the vegetable oil?
Yes, throughout.
When you increase total magnification of a microscope from 40X to 400X, the diameter of field of view will ________.
Decrease
When fermentation of apple cider was occurring in the small flasks, what gas was being released?
Co2
- In which area of the cell of the yeast does fermentation occur?
Cytoplasm
What was the primary (most common) product that was produced in the bottom of the flask by fermentation of the
apple cider by the yeast (you could tell by the smell what it was!)?
Ethanol
- What molecule, electron carrier, is produced in fermentation so sugars can continue to be broken down by glycolysis?
NAD
Which blood type would be considered the universal donor and which one would be the universal recipient?
O-/AB +
- What two-word term is a good descriptive phrase for an antigen?
Surface marker
- In which of these blood types and antibody serums would you expect a clumping reaction?
Type B and Antib antibodies
In which portion of the blood tissue would you expect to find the antibodies?
In the plasma
Where are the antigens found?
On the red blood cell
Diffusion occurs faster at _________
higher temperatures
Will diffussion occur in colder temperatures?
Yes, the rate will just be slower
Hypontonic
Outside fluid has a lower solute concentration than the cell, water enters and the cell expands
Isotonic
solute concentration is equal
Hypertonic
The cell will loss water as the solute concentration of the extracellular fluid is less than inside the cell
