NLN Pax Science practice tests
Questions and Graded A
A person blows his breath into a straw that is placed in limewater. The limewater becomes cloudy
because the person's breath contains: ✔✔carbon dioxide
A person w
...
NLN Pax Science practice tests
Questions and Graded A
A person blows his breath into a straw that is placed in limewater. The limewater becomes cloudy
because the person's breath contains: ✔✔carbon dioxide
A person who was in an auto accident has formed a blood clot at the site of the injury. One event
that can lead to formation of a blood clot is that: ✔✔ruptured platelets release thromboplastin
A student focuses sunlight to a point with a thin converging (convex) lens. Which of these direct
measurements can the student make as a result of this experiment? ✔✔the approximate focal
length of the lens
In ecological succession, the first living thing to colonize a hitherto barren area is called a:
✔✔pioneer organism
Unicellular organisms that have a nucleus and can swim with the aid of cilia are examples of:
✔✔protozoans
Which of these conditions is associated with smoking? ✔✔emphysema
Which of these quantities is most closely associated with an object's inertia? ✔✔Mass
Which of these sequences of anatomic organization, from the simplest level to the most complex,
is the correct sequence? ✔✔From tissue, organ, organ system to organism
Which part of the cell structure controls the passage of materials into and out of the cell?
✔✔Plasma membrane
While working in the chemistry laboratory, a student spills dilute hydrochloric acid on her hand.
What is the first action this student should take? ✔✔Flush her hand with large quantities of water
Within a living cell, the oxygen (O2) from a mixture of O2 and carbon dioxide (CO2) is used up.
This creates a concentration gradient across the cell membrane, drawing O2 across the membrane
from the outside in, a process known as ✔✔Diffusion
You cut your finger rather deeply while slicing an apple. Which of these actions should you take
first? ✔✔Wash the wound continuously with cold running water
30 students in a class carefully measure the length and width of 20 peanut shells. They also count
the number and note the size of the peanuts inside. This information is recorded on various graphs
showing the numbers of nuts and the different sizes. The collected evidence of the peanuts gives
the students an idea of the exten
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