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Nursing Elites

ATI TEAS 7

physics

1. What phenomenon occurs when a wave encounters a change in medium causing a change in its speed and direction?

Correct answer: a

Rationale: Refraction happens when a wave changes its speed and direction due to encountering a change in medium.

2. Which type of transport allows for the movement of large molecules, such as proteins and polysaccharides, across the cell membrane?

Correct answer: A

Rationale: Rationale: A) Endocytosis is the process by which cells engulf large molecules or particles by wrapping the cell membrane around them to form a vesicle that is brought into the cell. This mechanism allows for the movement of large molecules, such as proteins and polysaccharides, across the cell membrane. B) Exocytosis is the opposite process of endocytosis, where cells release large molecules or particles by fusing vesicles with the cell membrane to expel their contents out of the cell. C) Active transport is a process that requires energy to move molecules across the cell membrane against their concentration gradient. While active transport can move large molecules, it is not specifically designed for the transport of proteins and polysaccharides. D) Facilitated diffusion is a type of passive transport that involves the movement of molecules across the cell membrane with the help of transport proteins. While facilitated diffusion can assist in the movement of

3. During photosynthesis, plants capture sunlight and convert water and carbon dioxide into glucose and oxygen. This is an example of a:

Correct answer: C

Rationale: The correct answer is C: Synthesis reaction. During photosynthesis, plants combine water and carbon dioxide using sunlight to produce glucose and oxygen. In a synthesis reaction, two or more substances combine to form a more complex product. In this case, glucose and oxygen are synthesized from simpler molecules. A decomposition reaction involves breaking down a compound into simpler substances, which is not the case in photosynthesis. Combustion reactions involve the rapid reaction of a fuel with oxygen to produce heat and light, which is also not the process occurring in photosynthesis. Double displacement reactions involve the exchange of ions between two compounds to form new compounds, which is not the mechanism of photosynthesis. Therefore, the process described in the question aligns with a synthesis reaction.

4. What is the characteristic property of acids?

Correct answer: b

Rationale: Acids typically have a sour taste. The other choices do not accurately describe the characteristic properties of acids.

5. What is the relationship between the speed of a wave, its frequency, and wavelength in a given medium?

Correct answer: a

Rationale: In a given medium, the speed of a wave equals the product of its frequency and wavelength.

6. Following a successful heart transplant surgery, the patient's body will need to take medications to:

Correct answer: A

Rationale: The correct answer is A: 'Suppress the immune system and prevent rejection of the new heart.' After a heart transplant surgery, the body's immune system may recognize the new heart as a foreign object and try to attack it, leading to rejection. To prevent this, patients need to take medications that suppress the immune system, helping the body accept the new heart. These medications are crucial to ensure the success and longevity of the transplanted organ by reducing the risk of rejection. Options B, C, and D are not directly related to the post-heart transplant medication regimen and do not address the primary concern of preventing rejection.

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