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Quiz Session - Attempts With Random Questions

HESI A2 Exam Questions

Page 7 of 74

121.

Neutrophils, eosinophils, and basophils are white blood cells that are collectively known as granulocytes. What do neutrophils do?

  • Attack and destroy bacteria and viruses

  • Fight against parasitic infections

  • Respond to histamine-releasing allergens

  • Engulf and destroy foreign material to the body

Correct answer: Attack and destroy bacteria and viruses

Neutrophils attack and destroy bacteria and viruses. They are also the most common granulocyte.

Eosinophils fight against parasitic infections. Basophils respond to histamine-releasing allergens. Macrophages are larger monocytes that engulf and destroy foreign material to the body.

122.

Which of the following best states the law of conservation of mass?

  • Mass cannot be created nor destroyed

  • As much mass as possible must be conserved in each reaction

  • To conserve mass the reactions must produce a product

  • Mass can only be created, not destroyed

Correct answer: Mass cannot be created nor destroyed

The law of conservation of mass states that mass cannot be created nor destroyed. Thus the individual elements that make up the reactants must equal the individual elements that make up the products after a reaction; they must be balanced.

123.

Which of the following is a group of three RNA nucleotides?

  • A codon

  • An anticodon

  • A stop codon

  • tRNA

Correct answer: A codon

A codon is a group of three RNA nucleotides. The messenger RNA (mRNA) slides through the ribosome during the translation process. Every group of three bases along the stretch of RNA is known as a codon and each of these codes for a specific amino acid.

124.

Increasing the surface area is a way to increase the reaction rate of a chemical reaction. How does increasing the surface area accomplish this?

  • It increases the opportunity for particles to come into contact with one another

  • It increases the chance of contact by causing particles to move around faster due to greater kinetic energy

  • It reduces the amount of energy required for a reaction to occur

  • It increases the chances of a collision between reactants and produces more products

Correct answer: It increases the opportunity for particles to come into contact with one another

Increasing the surface area is a way to increase the reaction rate of a chemical reaction because the increased surface area increases the opportunity for particles to come into contact with one another.

Increasing the temperature increases the chance of contact by causing particles to move around faster due to greater kinetic energy. A catalyst reduces the amount of energy required for a reaction to occur. Increasing the concentration increases the chances of a collision between reactants and produces more products.

125.

All except which of the following factors cause low blood pressure?

  • Excess weight

  • Chronic dehydration

  • Infectious diseases

  • Allergic reactions

Correct answer: Excess weight

The reader can answer this question by directly reading the details listed in the passage. The passage states that excess weight is a cause of high blood pressure, not low blood pressure.

Chronic dehydration, infectious diseases, and allergic reactions are all causes of low blood pressure.

126.

Divide:

56 ÷ 1.4

  • 40

  • 0.4

  • 4

  • 0.004

Correct answer: 40

1. Shift the decimal points of both 56 and 1.4 to the right by 1 decimal place. (This is needed to convert 1.4 to 14 since long division must divide by a whole number.)

56014

2. Set up the long division.

3. Calculate 56 ÷ 14, which is 4.

4. There is no remainder. We are done. Add ending zeros to the final answer.

5. Therefore, 56 ÷ 1.4 = 40

127.

Which of the following sentences is correct in regards to subject-verb agreement?

  • The mistake in the ad was as plain as day.

  • My last hour at work pass at a snail's pace.

  • That catalog list everything from A to Z.

  • The contributions was a drop in the bucket.

Correct answer: The mistake in the ad was as plain as day.

The sentence "The mistake in the ad was as plain as day" has a singular subject ("mistake") and a singular verb ("was"); therefore, it is the sentence that is correct in regards to subject-verb agreement.

The sentence "My last hour at work pass at a snail's pace" is incorrect because it has a singular subject ("hour") and a plural verb ("pass"). The sentence "That catalog list everything from A to Z" is incorrect because it has a singular subject ("catalog") and a plural verb ("list"). The sentence "The contributions was a drop in the bucket" is incorrect because it has a plural subject ("contributions") and a singular verb ("was").

128.

What are the rows of the periodic table called?

  • Periods

  • Groups

  • Columns

  • Elements

Correct answer: Periods

The rows of the periodic table are called periods.

The columns of the periodic table are called groups. The periodic table is a table of elements categorized by the properties of those elements.

129.

The spinal cord is the part of the nervous system that contains a bundle of neurons that transmit information throughout the body. The spinal cord contains white and gray matter. What does the gray matter do?

  • Integrates reflexes to stimuli

  • Serves as the main conduit of nerve signals from the brain to the body

  • Carries signals between the brain and spinal cord to the rest of the body

  • Processes and responds to information

Correct answer: Integrates reflexes to stimuli

The spinal cord's gray matter integrates reflexes to stimuli.

The spinal cord's white matter serves as the main conduit of nerve signals from the brain to the body. Nerves carry signals between the brain and spinal cord to the rest of the body. The brain processes and responds to information.

130.

What muscle is located from the sternum and clavicle to the mastoid process of the temporal bone and is responsible for rotating one's head?

  • Sternocleidomastoid

  • Masseter

  • External abdominal oblique

  • Flexor carpi radialis

Correct answer: Sternocleidomastoid

The sternocleidomastoid muscle is located from the sternum and clavicle to the mastoid process of the temporal bone. This muscle also rotates the head.

The masseter muscle is located from the maxilla and zygomatic arch to the angle and to the rams of the mandible; it closes the mouth. The external abdominal oblique is located from ribs 5-12 to the iliac crest and linea alba; it flexes the vertebral column. The flexor carpi radialis muscle is located from the medial epicondyle of the humerus to the second and third metacarpals; it flexes the wrist.

131.

Read the following sentence, and select the meaning of the italicized word.

The nurse will depress the patient's skin to determine if soreness is present.

  • Press downward

  • Make worse

  • Lift up

  • Downward measurement

Correct answer: Press downward

The term "depress" means to press downward. The nurse will press downward on the patient's skin to determine if soreness is present.

The term "exacerbate" means to make worse. The term "elevate" means to lift up. The term "depth" means downward measurement.

132.

Read the passage and answer the following question:

According to the passage, which of the following options would be used to make reference to a fold of fatty abdominal tissue?

  • Omentum

  • Ovary

  • Uterus

  • Fallopian Tube

Correct answer: Omentum

The answer to this question can be found in the context of the passage. The passage's first paragraph informs the reader that a fold of fatty abdominal tissue is known as omentum.

133.

Bones consist of two types of bone marrow: red bone marrow (myeloid tissue) and yellow bone marrow. Which of the following statements is true regarding red bone marrow?

  • Red bone marrow is involved in the production of blood cells.

  • Red bone marrow is important for fat storage.

  • The color of red bone marrow is due to a higher percentage of fat cells.

  • None of these statements are true.

Correct answer: Red bone marrow is involved in the production of blood cells.

Bone marrow is found in the bones throughout your body. There are two types of bone marrow: red bone marrow (also known as myeloid tissue) and yellow bone marrow.

  • Red bone marrow is involved in production of blood cells. Red bone marrow is also known to work with the liver and spleen to obliterate old red blood cells. Red blood cells, platelets and most white blood cells arise in red marrow.
  • Yellow bone marrow is important for fat storage. As you age, yellow bone marrow replaces red bone marrow. Some white blood cells develop in yellow marrow. The color of yellow marrow is due to the much higher number of fat cells.

Both red and yellow bone marrow contain numerous blood vessels and capillaries. At birth, all bone marrow is red; with age, more and more is converted to yellow. In cases of severe blood loss, the body can convert yellow marrow back to red marrow in order to increase blood cell production.

134.

How many monosaccharides are joined together to make a polysaccharide?

  • 7 to 1,000

  • 3 to 6

  • 2

  • 50 to 100

Correct answer: 7 to 1,000

When 7 to 1,000 monosaccharides are joined together, it is called a polysaccharide.

When 3 to 6 monosaccharides are joined together, it is called an oligosaccharide. When 2 monosaccharides are joined together, it is called a disaccharide.

135.

Which of the following identifies the main idea of the passage?

  • Many conversations which once required overseas travel can now be conducted by phone.

  • Even with modern overseas telephone service, people continue to travel abroad by ship or plane.

  • Nothing can take the place of face-to-face conversation in settling commercial and social matters.

  • Overseas telephone service today is ruling out all need for overseas travel.

Correct answer: Many conversations which once required overseas travel can now be conducted by phone.

The main idea of this paragraph suggests conversations which once required overseas travel can now be conducted by phone. The main idea of a passage can be identified by answering the following two questions: 1) What is the passage about? and 2) What point is the author trying to make?

The other options are either supporting details or incorrect assumptions.

136.

Which of the following best describes Alzheimer's?

  • A disease that causes memory loss

  • An untreatable disease

  • An uncommon disease

  • A disease that impairs one's mobilization

Correct answer: A disease that causes memory loss

The first three paragraphs of the passage inform the reader that Alzheimer's disease is a form of memory loss.

The fourth paragraph informs the reader that there are treatments for the disease. The fourth paragraph also informs the reader that the disease is the sixth leading cause of death in the U.S.; therefore, the disease is not uncommon. The first paragraph informs the reader that the disease causes issues with one's memory, behavior, and thinking, not one's ability to move.

137.

875 meters is equal to how many kilometers?

  • 0.875 kilometers

  • 0.0875 kilometers

  • 8.75 kilometers

  • 875 kilometers

Correct answer: 0.875 kilometers

1,000 meters = 1 kilometer; therefore, 875 meters = 0.875 kilometers (875/1,000 = 0.875).

138.

The smallest bones in the body are the malleus, incus, and stapes. Where are these three bones located?

  • Ear

  • Finger

  • Jaw

  • Foot

Correct answer: Ear

The malleus, incus, and stapes are located in the ear. These three bones are collectively known as auditory ossicles, which are located inside the temporal bone of the ear.

The phalanges form the fingers. The mandible is the jaw bone. The tarsals and metatarsals form the foot.

139.

Which bone is found in the upper arm?

  • Humerus

  • Femur

  • Patella

  • Coccyx

Correct answer: Humerus

The humerus is the bone found in the upper arm. The scapula and the humerus form the shoulder's ball-and-socket joint.

The femur is found in the thigh. The patella is the kneecap. The coccyx is the tailbone.

140.

Choose the correct answer:

"Mrs. Steinberg, _____ I please turn my assignment in late for partial credit?"

  • may

  • can

  • should

  • would

Correct answer: may

"Mrs. Steinberg, may I please turn my assignment in late for partial credit?" "Can" implies ability or power while "may" implies permission or possibility. For example, "I can get into nursing school" versus "I may get into nursing school."

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