A. Cytotoxic T-cells
B. Plasma cells
C. Natural killer cells
D. Helper T-Cells
For those aiming to excel in their ATI TEAS test and secure admission into their desired nursing program, ExamGates offers an invaluable resource. Our platform features practice questions meticulously crafted by tutors who have previously aced the exam themselves. With ExamGates, you can access content that is 100% relevant to the test, accompanied by vivid images and illustrations. Additionally, our platform provides comprehensive explanations for both correct and incorrect answers, empowering you to fully grasp the material and optimize your study efforts. Take the first step towards your nursing aspirations with ExamGates today.
Helper T cells are important cells that stimulate the action of other immune cells. For instance, they not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Therefore, the Correct Answer is D.
Which of the following would result in an increase in the chemical reaction?
A. Adding more of the product
B. Decreasing the concentration of the reactant
C. Sealing the reaction in an airtight container
D. Using a mortar and pestle to grind a solid reactant to a powder
The Correct Answer is D.Crushing a solid reactant into powder increases the surface area of the reactant, thereby increasing chemical reaction. This is because more of the reacting molecules or ions are exposed to the other reactant, which increases the chance of particles colliding and leads to more successful collisions per second.
in which of the following locations does fertilization of an egg cell typically occur?
A. Fallopian Tube
B. Ovary
C. Uterus
D. Cervical canal
The Correct Answer is A.Fertilization occurs in the fallopian tube and not in the ovary, uterus, or cervical canal.
Which of the following body systems breaks down proteins into amino acids?
A. Digestive
B. Excretory
C. Circulatory
D. Endocrine
The Correct Answer is A.The digestive system breaks down complex food substances into small and less complex absorbable compounds. Proteins, for instance, are broken down to constituent amino acids through a digestion process that combines mastication and enzymatic breakdown.
A slice of apple left on a table slowly goes brown due to an enzymatic reaction. Dipping the apple slice in lemon juice prevents it from browning Which of the following best explains this result?
A. Lemon juice has enzymes which reverse the browning reaction
B. Lemon juice has a pH which inactivates the enzymes
C. Lemon juice functions to bleach the brown material
D. Lemon juice functions to dilute the brown material
The Correct Answer is B.Browning of the apple surface is due to the action of the enzyme polyphenol oxidase. Lemon juice is acidic and lowers the pH of the apple's surface. This inactivates the enzyme polyphenol oxidase, which works best at a neutral pH. This in turn reduces the browning action on the apple.
Which of the following describes one difference between skeletal muscles and cardiac muscles?
A. Skeletal muscles are found in the viscera whereas cardiac muscles are found in the cranium
B. Cardiac muscles contain intercalated discs, whereas skeletal muscles do not
C. Cardiac muscles are voluntary, whereas skeletal muscles are involuntary
D. Skeletal muscles are autorhythmic, whereas cardiac muscles are not
The Correct Answer is B.Cardiac muscles have intercalated discs that enable them to contract in a coordinated manner. Skeletal muscles do not have intercalated discs, as their contraction is under voluntary control and does not require the same level of synchronization seen in the involuntary contraction of cardiac muscle.
Which of the following characteristics of water helps explain why coastal areas experience less dramatic temperature changes during the day?
A. Water has a high specific heat capacity
B. Water is a versatile solvent
C. Water forms covalent bonds with other water molecules
D. Water's adhesive properties prevent evaporation
The Correct Answer is A.Water has a high specific heat capacity, which means it can absorb and store a large amount of heat energy without significantly changing in temperature. This helps moderate the temperature fluctuations of the air near the coast, as water can store heat during the day and release it at night, or vice versa.
Which of the following is classified as a noninfectious disease?
A. Psoriasis
B. Brucellosis
C. Olkunginys
D. Dengue
The Correct Answer is A.Psoriasis is a chronic skin condition that causes red, scaly patches on the skin. It is not contagious, and it is not caused by any microorganism. It is believed to be an autoimmune disorder where the immune system attacks healthy skin cells.
Which of the following contains a human's hereditary information?
A. chromatin
B. Histones
C. ATP
D. Plasmids
The Correct Answer is A.Rationale
Chromatin refers to a complex of DNA and proteins in human cells. This material is packaged by histones to make up the chromosomes. The chromosomes then contain genetic information that is heritable.
Use the table below to answer the question
|
Object |
Mass |
Time of Fall |
|
A |
5.0g |
2.0 sec |
|
B |
5.0g |
1.0 sec |
|
C |
30.g |
0.5 sec |
|
D |
35.0g |
1.5 sec |
Which of the following conclusions is supported by the data?
A. Object A and B fall at the same rate
B. The time of fall is independent of the mass of the object
C. The greater the mass of an object, the faster it will fall
D. Air resistance is greater for A than for B
The Correct Answer is D.Objects A and B have the same and are subjected to the same gravitational pull. However, object B falls faster than A. This is due to a greater air resistance for A than B.
Which of the following organs removes nitrogenous waste from the body?
A. Large Intestines
B. Liver
C. Kidneys
D. Gall Bladder
The Correct Answer is C.The kidneys are the primary organs involved in the excretion of nitrogenous wastes. Nitrogenous wastes are mostly products of protein metabolism in the liver. One of the common nitrogenous waste products is urea, which is excreted through the kidneys.