PBS CFA: Unit 1 — The Mystery

A short unit check. Enter your Student ID and answer each item. This is a growth check, not a grade.

1. 1. An SDS (Safety Data Sheet) for a chemical tells you all of the following EXCEPT:

   AThe chemical's resale priceBIts hazardsCRequired PPEDFirst-aid measures

2. 2. "The victim has a bruise on the left arm" is an observation. "The victim was grabbed" is:

   AAn inferenceBAnother observationCA measurementDA control

3. 3. Benedict's solution turns orange with a sample. This indicates the presence of:

   AReducing sugarsBProteinsCLipidsDDNA

4. 4. Alveoli in the lungs are tiny and numerous. This structure supports their function by:

   AMaximizing surface area for gas exchangeBStoring foodCPumping bloodDProducing bile

5. 5. A single witness saw the event from far away at night. Their account is:

   AUseful but limited in reliabilityBPerfectly reliableCPhysical evidenceDIrrelevant and ignorable

Enter your Student ID to submit.