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Correct answer: 400 feet AGL

Part 107.51 limits sUAS operations to 400 feet above ground level (AGL), unless flying within a 400-foot radius of a structure, in which case you may fly up to 400 feet above the structure’s highest point.

Correct answer: 87 knots (100 mph)

Part 107.51 limits sUAS groundspeed to 87 knots (100 miles per hour).

Correct answer: Obtain ATC authorization (e.g., via LAANC)

Class B, C, D and surface-area E airspace require prior ATC authorization, most commonly granted in near-real-time through LAANC.

Correct answer: Median cubital vein

The median cubital vein is the preferred site because it is large, superficial, well-anchored, and has fewer nerve endings, making it less painful for the patient.

Correct answer: 21 gauge

A 21-gauge needle is the standard for routine adult venipuncture, giving good blood flow with minimal patient discomfort and hemolysis risk.

Correct answer: 1 minute

More than 1 minute causes hemoconcentration, patient discomfort, and potentially altered results. Release and reapply if the draw takes longer.

Correct answer: 1987

The Montreal Protocol was signed in 1987 as an international treaty to protect the ozone layer by phasing out production of ozone-depleting substances.

Correct answer: 5 pounds

High-pressure systems (Type II) contain 5 pounds or more of refrigerant. Below that, it’s a Type I small appliance.

Correct answer: Remove them as they tend to leak over time

Piercing (saddle) valves develop leaks over time, so they must be removed after service to prevent refrigerant loss.

Correct answer: 41°F to 135°F

The temperature danger zone is 41°F to 135°F (5°C to 57°C). Bacteria grow rapidly in this range, so TCS foods should spend minimal time in this zone.

Correct answer: Biological, chemical, and physical

Biological (bacteria, viruses, parasites, fungi), chemical (cleaners, pesticides, toxic metals), and physical (glass, metal, dirt).

Correct answer: Wet hands, apply soap, scrub 10–15 seconds including under nails, rinse, dry

Proper handwashing: warm water, soap, vigorous scrubbing of hands and arms for 10–15 seconds including under fingernails, rinse, dry with a single-use towel. The whole process takes about 20 seconds start to finish.

Correct answer: Anterior

Anterior means toward the front of the body. Posterior is toward the back, inferior is below, and medial is toward the midline.

Correct answer: S phase

DNA replication occurs during the S (synthesis) phase of interphase.

Correct answer: Number of protons

Atomic number equals the number of protons in the nucleus and defines the element.