FREE PAX Science Questions and Answers

Question 1

The adrenal glands are part of the:

Accepted Answer

Endocrine system

Answer

Explanation:
The adrenal glands are part of the endocrine system. They sit on the kidneys and produce hormones that regulate salt and water balance and influence blood pressure and heart rate.

Question 2

Which of the following is exchanged between two or more atoms that undergo ionic bonding?

Accepted Answer

Valence electrons

Answer

Explanation:
An ionic bond forms when one atom donates an electron from its outer shell, called a valence electron, to another atom to form two oppositely charged atoms.

Question 3

Jessica goes to the gym locker room after completing her workout and finds a woman lying on the ground. After she checks the scene for safety, she checks for responsiveness, breathing, and bleeding. The woman does not appear to be conscious or breathing, and Jessica cannot feel her pulse. Jessica calls 911 and places the woman on her back. Jessica is not CPR-certified. What is the next step the 911 operator should direct Jessica to take?

Accepted Answer

Find and attach an automated external defibrillator (AED)

Answer

Explanation:
The first step a person should take when encountering a scenario like this is to call 911 and follow the dispatcher's instructions. Usually, the second step is to find an AED as it can help to guide a trained or untrained person through CPR, monitor vital signs, and administer shocks if necessary. In this situation, After checking for responsiveness, breathing, and pulse and calling 911, Jessica would most likely be guided by the operator through the use of an AED. AEDs are intended to be usable by anyone, even if the individual is not CPR-certified. The American Heart Association recommends that an untrained person administer hands-on CPR. Hands-only CPR consists of chest compressions delivered at a rate of 100 beats per minute and a depth of two inches. Blind swipes of the mouth to remove foreign objects are no longer encouraged due to the risks for further lodging the object into the airway. Conventional CPR consists of giving two breaths after every 30 compressions.

Question 4

Which of the following is the most likely pH of a solution containing many hydroxide ions (OH-) and few hydrogen ions (H+)?

Accepted Answer

9

Answer

Explanation:
A solution that contains more hydroxide ions than hydrogen ions is a base, and bases have a pH greater than 7, so the only possible answer is choice D, 9.

Question 5

Suzanne is exploring contraception options. She is sexually active with her long-term partner but does not plan on having children for the foreseeable future, so she would prefer a long-lasting and low-maintenance method. She also would rather use a nonhormonal contraceptive. Which type of contraception is the most appropriate for her preferences?

Accepted Answer

Copper intrauterine device (IUD)

Answer

Explanation:
A copper IUD is a 99 percent effective non-hormonal contraception that lasts up to 12 years. It is the most appropriate option since Suzanne would like a long-term solution that requires little maintenance. While progestin implants are equally effective and last up to five years, implants release the hormone progestin to prevent ovulation and obstruct sperm by thickening cervical mucus. Depo-Provera shots - also called Depo shots or birth control shots—are also 99 percent effective. However, birth control shots must be administered every three months. Female or internal condoms are less than 80 percent effective and must be used every time that a couple has sexual intercourse. Similarly, male condoms must be used every time but are slightly more effective (approximately 87 percent effective). Condoms are the only contraceptive option of those listed that also prevent STD transmission.

PAX - Pre-Admission Examination Practice Test

PAX - Pre-Admission Examination Practice Test

FREE PAX Science Questions and Answers