Naxlex Prep - Science Practice Test X4 &
X5- 2024-2025
A represents atomic mass, and two represents an atomic number, which of the following
describes an atom after a proton is emitted? - ANSWER-A-1, 2-1
A slice of apple left on a table slowly goes brown due to enzymatic reaction. Dipping the
apple slice and lemon juice prevent it from browning. Which of the following best
explains this result. - ANSWER-Lemon juice has a pH which inactivates the enzymes
An experienced mountaineer decides to climb Mount Everest, taking the same route in
the same season with the similar materials and equipment used in a fatal 1924
expedition. Which of the following is the scientific purpose of such a climb? - ANSWER-
To assess why the earlier expedition failed
Escherichia is plated on a nutrient agar plate that each contain a different type of
antibiotic. The shaded area represents growth of the bacteria. Which of the following
plates contains bacteria that were most resistant to the antibiotic - ANSWER-C. The one
with the most growth
In order to determine the effects of energy drinks on women's running speed,
researchers gave 300 women an energy drink and then recorded the time it took each
of them to run 2 miles. After collecting results, researchers concluded that energy drinks
increase the speed of running in women. Which of the following further tests would best
help to support this conclusion - ANSWER-Repeat the experiment giving half of the
women water and the other half of them the energy drink
Nitrogen gas is an extremely stable molecule because it structure contains which of the
following - ANSWER-Triple covalent bonds
The component of an atom that possesses relatively little mass thus being negligible in
calculating the atomic mass number is the - ANSWER-Electron
The gray matter of the brain is largely made up of which of the following - ANSWER-
Neuron cell bodies
The hip is an example of which of the following type of joints? - ANSWER-Ball and
socket
The vermiform appendix extends from the region of the large intestine, known as which
of the following - ANSWER-Cecum
Using the equation PH = -log (H+), a solution with a (H+) = 10 + M has a pH of which of
the following - ANSWER-1
X5- 2024-2025
A represents atomic mass, and two represents an atomic number, which of the following
describes an atom after a proton is emitted? - ANSWER-A-1, 2-1
A slice of apple left on a table slowly goes brown due to enzymatic reaction. Dipping the
apple slice and lemon juice prevent it from browning. Which of the following best
explains this result. - ANSWER-Lemon juice has a pH which inactivates the enzymes
An experienced mountaineer decides to climb Mount Everest, taking the same route in
the same season with the similar materials and equipment used in a fatal 1924
expedition. Which of the following is the scientific purpose of such a climb? - ANSWER-
To assess why the earlier expedition failed
Escherichia is plated on a nutrient agar plate that each contain a different type of
antibiotic. The shaded area represents growth of the bacteria. Which of the following
plates contains bacteria that were most resistant to the antibiotic - ANSWER-C. The one
with the most growth
In order to determine the effects of energy drinks on women's running speed,
researchers gave 300 women an energy drink and then recorded the time it took each
of them to run 2 miles. After collecting results, researchers concluded that energy drinks
increase the speed of running in women. Which of the following further tests would best
help to support this conclusion - ANSWER-Repeat the experiment giving half of the
women water and the other half of them the energy drink
Nitrogen gas is an extremely stable molecule because it structure contains which of the
following - ANSWER-Triple covalent bonds
The component of an atom that possesses relatively little mass thus being negligible in
calculating the atomic mass number is the - ANSWER-Electron
The gray matter of the brain is largely made up of which of the following - ANSWER-
Neuron cell bodies
The hip is an example of which of the following type of joints? - ANSWER-Ball and
socket
The vermiform appendix extends from the region of the large intestine, known as which
of the following - ANSWER-Cecum
Using the equation PH = -log (H+), a solution with a (H+) = 10 + M has a pH of which of
the following - ANSWER-1
