NLN PAX RN Science
Exam 2023 Review
A+
1 kilogram (kg) of solid X at 10°C and 1 kg of solid Y at 10°C each absorb 5 joules of
heat energy. The
... [Show More] final temperatures of X and Y are 15°C and 20°C, respectively.
Compared to X, Y must have a lower
A) specific heat
B) conductive heat
C) heat of fusion
D) heat of vaporization - Correct Answer-A) specific heat
A drop of dilute ammonium hydroxide (NH4OH) is placed on one side of a slide
containing a large number of swimming paramecium. Under this condition, which of
these behaviors of the paramecium will be observed?
A) They will eventually all swim toward the ammonium hydroxide
B) They will show no net change in behavior to the ammonium hydroxide
C) They will all be instantly killed by the ammonium hydroxide
D) They will eventually all swim away from the ammonium hydroxide - Correct AnswerD) They will eventually all swim away from the ammonium hydroxide
A person blows his breath into a straw that is placed in limewater. The limewater
becomes cloudy because the person's breath contains
A) carbon dioxide
B) hydrogen
C) oxygen
D) nitrogen - Correct Answer-A) 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
A) red blood cells release hemoglobin
B) bone marrow cell decrease platelet production
C) white blood cells release antibodies
D) ruptured platelets release thromboplastin - Correct Answer-D) ruptured platelets
release thromboplastin
An unknown gas is more dense than air, does not support combustion, and turns a
limewater solution cloudy. This gas is most probably
A) ammonia
B) methane
C) carbon dioxide
D) hydrogen - Correct Answer-C) carbon dioxide
Human testes produce
A) eggs
B) follicle stimulating hormone
C) growth hormone
D) spermatozoa - Correct Answer-D) spermatozoa
If the medulla of the brain in a human was damaged, which of these conditions would
most likely result?
A) inability to remember
B) difficulty in breathing
C) inability to speak
D) blurred vision - Correct Answer-B) difficulty in breathing
In ecological succession, the first living thing to colonize a hitherto barren area is called
a
A) producer
B) primary consumer
C) pioneer organism
D) carnivore - Correct Answer-C) pioneer organism
Night blindness in humans is caused by a lack of
A) Vitamin A
B) Niacin
C) Calcium
D) Vitamin D - Correct Answer-A) Vitamin A
Iodized salt is used to prevent a human condition known as
A) rickets
B) goiter
C) scurvy
D) beri-beri - Correct Answer-B) goiter
The inherited factors that are transmitted in an organism from generation to generation
are called its
A) homozygote
B) heterozygote
C) genotype
D) phenotype - Correct Answer-C) genotype
The organ that filters metabolic waste from the blood is the... [Show Less]