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Nursing Elites

ATI TEAS 7

Chemistry

1. Which of the following is a balanced chemical equation?

Correct answer: b

Rationale: The equation is balanced, with equal numbers of atoms of each element on both sides.

2. What is the meaning of the idiom "to cross that bridge when we come to it"?

Correct answer: C

Rationale: The idiom suggests dealing with challenges as they arise, not before.

3. Define "acceleration" in terms of motion.

Correct answer: a

Rationale: Acceleration measures the rate of change of velocity with respect to time.

4. Which element is found in water and is crucial for biological functions like nerve impulses and muscle contraction?

Correct answer: A

Rationale: Sodium plays a key role in maintaining electrolyte balance and transmitting nerve impulses, affecting both muscles and nerves

5. The involuntary "fight-or-flight" response is controlled by the:

Correct answer: A

Rationale: The correct answer is A: Sympathetic nervous system. The "fight-or-flight" response is an automatic physiological reaction triggered by the sympathetic nervous system in response to a perceived threat or stressor. This system prepares the body for action by increasing heart rate, dilating pupils, and redirecting blood flow to muscles. The parasympathetic nervous system, on the other hand, controls the body's "rest-and-digest" response, promoting relaxation and digestion. The enteric nervous system primarily regulates the gastrointestinal system, while the sensory nervous system is responsible for transmitting sensory information to the brain. Therefore, the sympathetic nervous system is specifically responsible for initiating the fight-or-flight response.

6. What is the scientific name for the building blocks of proteins?

Correct answer: B

Rationale: Rationale: - Proteins are made up of long chains of amino acids. - Amino acids are the building blocks of proteins and are considered monomers. - Monomers are the individual units that can be linked together to form larger molecules called polymers. - In the context of proteins, amino acids are the monomers that are linked together through peptide bonds to form polypeptide chains, which then fold into functional proteins. - Residues refer to the specific amino acids within a protein after certain modifications or cleavages have occurred, so it is not the correct term for the building blocks of proteins. - Macromolecules are large molecules made up of smaller subunits, such as proteins, nucleic acids, and carbohydrates, but they are not the specific building blocks of proteins. - Peptides are short chains of amino acids linked by peptide bonds, but they are not the fundamental building blocks of proteins.

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