11/09/2026
WHICH ONE IS TRUE? HERE ARE THE ANSWERS.
How many did you get right?
Question 1: Laboratory
Answer: C
Some cultures need time because the laboratory may be waiting to see whether microorganisms grow.
Unlike a test that can run quickly on an analyzer, some cultures require incubation. If microorganisms are present, they may need time to grow enough for laboratory professionals to detect or identify them.
That is one reason some laboratory results take longer than others.
Question 2: Imaging Technology
Answer: B
MRI uses a strong magnetic field and radio waves to create images, while X-rays and CT use ionizing radiation.
Different imaging technologies create pictures in different ways. Ultrasound, for example, uses sound waves.
That is why imaging equipment can look and work very differently depending on the type of study being performed.
Question 3: Telemetry
Answer: D
Telemetry can watch the heart's electrical rhythm over time, while an EKG records a shorter snapshot.
Both involve the heart's electrical activity, but they are used differently. Telemetry allows ongoing monitoring, while an EKG captures a recording from a particular period of time for closer review.
Telemetry does not directly show the heart's valves or pumping strength.
Question 4: Oxygen Monitoring
Answer: A
A pulse oximeter uses light through tissue to estimate oxygen saturation and pulse.
It does not directly test an arterial blood sample, and it does not measure lung volume. Movement, circulation, sensor placement, and signal quality can also affect how well the device is able to obtain a reading.
These tools may look simple, but there is a lot of science behind the information they provide.