Mixed Deck — All PAX Topics Flashcards

During which phase is the chromosome number reduced from diploid to haploid?

Answer: meiosis I

Explanation: During meiosis I, the chromosome number is reduced from diploid to haploid. Interphase is the period of the cell cycle that occurs in between divisions of the cell. In meiosis, the homologous chromosomes in a diploid cell separate, reducing the number of chromosomes in each cell by half. Mitosis is the phase of cell division in which the cell nucleus divides. The S phase is the part of the mitotic cycle in which DNA is synthesized.

According to the passage, approximately what percentage of people with peanut allergies have severe reactions?

Answer: Up to 33%

Explanation: The second paragraph of the passage notes that ""up to one-third of people with peanut allergies have severe reactions."" Since one-third is approximately 33%, choice C is correct.

A Pre-Admission Examination survey collected responses from 600 participants. If 72% responded positively, how many responded positively?

Answer: 432

72% of 600 = 0.72 × 600 = 432 positive responses.

In Pre-Admission Examination, what is homeostasis?

Answer: The body's ability to maintain a stable internal environment despite external changes

Homeostasis is the process by which biological systems maintain internal stability and balance (temperature, pH, glucose levels, etc.) while adjusting to changing external conditions.

What does "context clues" mean in Pre-Admission Examination reading comprehension?

Answer: Using surrounding words and sentences to determine the meaning of unfamiliar terms

Context clues are hints provided by surrounding words, phrases, and sentences that help readers infer the meaning of unfamiliar vocabulary without external reference materials.

Mark's concerned daughter brought him into the emergency room, and it was found that he had feigned a heart attack. Feigned means:

Answer: Affected

Explanation: Affected is the synonym for feigned because in this instance both words mean, "presenting a false appearance of." Concealed is a somewhat related term signifying that something is "hidden." The other choices fit into the sentence and are synonyms for each other; as verbs, undergone and experienced both mean, "having come to knowledge of something by living through it."

A ball is dropped from rest. Which best describes its motion as it falls (ignoring air resistance)?

Answer: Constant acceleration downward

Gravity causes constant acceleration of approximately 9.8 m/s² downward.

In Pre-Admission Examination, what is homeostasis?

Answer: The body's ability to maintain a stable internal environment despite external changes

Homeostasis is the process by which biological systems maintain internal stability and balance (temperature, pH, glucose levels, etc.) while adjusting to changing external conditions.

In Pre-Admission Examination, what role does continuing education play in word knowledge?

Answer: To keep professionals current with evolving standards, technologies, and best practices

Continuing education ensures professionals stay current with new developments, evolving standards, and emerging best practices in their field, maintaining competence throughout their careers.

The sinoatrial (SA) node is the heart's natural pacemaker. Where is it located?

Answer: Right atrium

The SA node is located in the right atrium and generates the electrical impulses that initiate each heartbeat.

What is a controlled variable in an experiment related to Pre-Admission Examination?

Answer: A factor that is kept constant throughout the experiment

Controlled variables (constants) are factors that are deliberately kept the same throughout an experiment to ensure that any observed changes are due to the independent variable being tested.

What is the primary function of the mitochondria in cells relevant to Pre-Admission Examination?

Answer: To produce energy (ATP) through cellular respiration

Mitochondria are the "powerhouses" of the cell, converting nutrients into ATP (adenosine triphosphate) through cellular respiration, providing the energy needed for cellular functions.

What is the term for the bending of light as it passes from one medium to another?

Answer: Refraction

Refraction is the bending of light when it passes between media with different densities.

If x − 7 = 15, what is x?

Answer: 22

x = 15 + 7 = 22.

Which level of biological organization represents the most complex in Pre-Admission Examination human anatomy?

Answer: Ecosystem

The hierarchy from simplest to most complex goes: atom → molecule → cell → tissue → organ → organ system → organism → population → community → ecosystem → biosphere.

Which molecule in red blood cells binds to oxygen for transport throughout the body?

Answer: Hemoglobin

Hemoglobin is the iron-containing protein in red blood cells that binds oxygen in the lungs and releases it in body tissues.

An object in motion will remain in motion unless acted upon by an external force. This is Newton's:

Answer: First Law

Newton's First Law (law of inertia) states that objects maintain their state of motion unless a net force acts on them.

What happens to the speed of light as it moves from air into glass?

Answer: It decreases

Light slows down when it enters a denser medium like glass.

If a car travels 150 miles in 3 hours, what is its average speed?

Answer: 50 mph

Speed = distance ÷ time = 150 ÷ 3 = 50 mph.

The medical center's chief operating officer is an exponent of patient's rights. Exponent means:

Answer: Advocate

Explanation: An exponent is an advocate, someone who actively promotes or favors a cause. Adherent is a somewhat related term meaning, "follower, someone who follows the opinions or teachings of others." Opponent is an antonym signifying, "one who takes an opposing position." Critic is a near antonym, which in this sentence would mean "fault-finder."