Question: A scientific balance is used to measure:
Answer Choices:
Volume
Temperature
Length
Mass
Answer: Mass
Question: A fibrous joint that is a peg-in-socket is called a ________ joint.
Answer Choices:
gomphosis
suture
synchondrosis
syndesmosis
Answer: gomphosis
Question: What functional group are present on this molecule?
Answer Choices:
Ether and aldehyde
Hydrate and aldehyde
Hydrate and carboxylic acid
Hydrate and ester
Hydrate and ketone
Answer: Hydrate and aldehyde
Question: Determine the ratio of conjugate base over acid, [A-]/[HA], with a pKa of 6.0 in a solution of pH 5.5.
Answer Choices:
1.36
0.136
3.14
0.0316
3.160
Answer: 0.1
Question: What should you do if your clothing catches fire?
Answer: Roll on the floor until the flame is gone or go to the safety shower and shower.
Question: An enzyme family called the ______ catalyzes the phosphorylation of hexoses in the body.
Answer Choices:
Hexokinases
Phosphohexoses
Hexoskinases
Glucohexokinases
Phosphohexokinases
Answer: Hexokinases
Question: What should you always wear over your eyes while in the lab even if you wear glasses?
Answer: Lab Safety Goggles
Question: The accumulation of AGEs is linked to which of the following diseases?
Answer Choices:
Atherosclerosis
Arthritis
Diabetes
Both A and B are correct
Answer: All of the above are correct
Question: Besides a large spot and the TLC sample being too concentrated, what two other factors can cause the developed spots to appear as a streak?
Answer: If there are too many components in a sample, the developed spots will appear as a streak. Also, if the sample being separated is not soluble in silica gel, it may decompose and cause a streaky spot.
Question: In column chromatography (microscale), after loading it with solvent and adsorbent and prior to loading the sample, what level should you allow the solvent to drop to?
Answer: Top of the column packing.
What features will appear in the column if you allow the column to run dry?
Correct Answer:
Formation of air bubbles and channels.
What is the consequence if you do allow the column to run dry?
Correct Answer:
Poor separation.
Question: Synovial fluid is present in joint cavities of freely movable joints. Which of the following statements is true about this fluid?
Answer Choices:
It contains hyaluronic acid.
It contains lactic acid.
It contains hydrochloric acid.
It contains enzymes only.
Answer: It contains hyaluronic acid.
Question: Select the appropriate choice for the blanks in the question below:
When comparing 2 hydrocarbons, the larger, higher molecular weight molecule would have melting point because of .
Answer Choices:
Higher, increased attractive forces
Lower, increased attractive forces
Higher, decreased attractive forces
Lower, decreased attractive forces
Answer: Higher, increased attractive forces
Question: What is the identity of your unknown from Anacin, Excedrin, Tylenol that you spotted on your TLC plate in lab? To figure out spots from the Reference solution, look at the data section with the diagram of the spots revealed in test spot number (Question 11.3).
Answer: The identity of my unknown was Acetaminophen.