HESI A2 2024 UPDATED QUESTIONS AND ANSWERS EXAM

HESI A2 2024 UPDATED QUESTIONS AND ANSWERS EXAM |7|+|−2| = ____ Note: This problem shows the number -2 within an absolute value sign, not the number -21. A. 9 B. 5 C. 0 D. 14 - A. 9 9 is the correct answer because the brackets around the numbers mean you are adding the absolute value of those numbers. The absolute value of a number is always positive, so: The absolute value of 7 is 7.The absolute value of -2 is 2.Therefore, the problem becomes: 7 + 2 = 9. Note: You will not do anything to signs outside the absolute value brackets, only those within them. (Absolute value brackets do not operate by the same rules as parentheses in math.) A fresh egg will float in water when... A. always B. it will not float in any circumstance C. when the water is cold D. when salt is added to the water - D. when salt is added to the water Eggs are typically more dense than water, which makes them sink. However, if enough salt is added to the water, the water becomes more dense than the egg, which will cause the egg to float. A number is 5 more than half of another number. How would you write this as a mathematical expression? A. (5+1/2)N B. N/5⋅2 C. N/2+5 D. N+5/2 - C. N/2+5 First, we let N represent any number. We then express half of N as 1/2(N) or N/2. The phrase 5 more than indicates the mathematical expression 5+. Putting terms together, we get the correct answer. A person with AB- blood should not receive blood from which other blood type? A. BB. AC. OD. AB+ - D. AB+ Those with an AB- blood type should not receive blood from those with AB+ blood. Although both AB+ and AB- blood have A and B antigens, the person with AB- blood lacks a special protein, or "Rhesus" Factor (Rh), circulating in their blood. If they are given blood that has the Rh factor present, their body will make antibodies to this foreign substance and complications will occur. This is especially true in pregnancy situations where the mother is Rh- and the baby she is carrying is Rh+. A solution that contains the maximum amount of dissolved solute is said to be ____. A. unsaturated B. dilute C. saturated D. concentrated - C. saturated A saturated solution is one that has the maximum amount of solute dissolved into it. A subatomic particle is ____ in relation to an atom. A. smaller B. denser C. faster D. bigger - A. smaller Subatomic particles (which include neutrons, protons, and electrons) are much smaller than atoms. A woman has a mass of 50 kg on the moon. What is her mass on Earth? A. 25 kg B. 0 kg C. 100 kg D. 50 kg - D. 50 kg While the woman's weight would change due to differences in gravitation force, her mass would remain the same no matter if she was on the Earth or moon. According to the accompanying text, what are the names of the three basic blood cells? A complete blood count (CBC) is one of the most useful and requested types of analysis in medical practice. A CBC searches for all the cells that exist in the blood, which are divided into three basic types: white blood cells (leukocytes), platelets, and red blood cells (erythrocytes). All of these blood cells are produced in the bone marrow and correspond to a specific exam, integrated in the CBC: erythrogram, leukogram, and thrombogram. The erythrogram studies red blood cells. Among other tests, it includes a red blood cell count, a hematocrit, and hemoglobin. When these levels are low, the patient may be suffering from anemia, which can be caused by anything from heavy menstrual bleeding to Addison's disease. A diagnosis of polycythemia may be made if the number of red blood cells is increased