ATI TEAS 7
ATI TEAS 7 Science Questions
Question 1 of 5
Which organ in the body is responsible for maintaining electrolyte balance and filtering waste from the blood?
Correct Answer: B
Rationale: The correct answer is B: Kidneys. The kidneys are responsible for maintaining electrolyte balance through processes like reabsorption and excretion. They also filter waste from the blood to form urine. The liver primarily processes nutrients and detoxifies substances. The heart is responsible for pumping blood, not filtering waste. The lungs are involved in gas exchange, not electrolyte balance or waste filtration. Therefore, the kidneys are the correct choice for this function.
Question 2 of 5
Where does gas exchange take place in the respiratory system?
Correct Answer: A
Rationale: Gas exchange takes place in the alveoli, which are tiny air sacs at the end of the bronchioles. Alveoli have a large surface area and thin walls, allowing for efficient exchange of oxygen and carbon dioxide. Bronchioles, bronchi, and trachea are part of the airway passages and are not directly involved in gas exchange. Alveoli are specifically designed for gas exchange due to their structure and proximity to the capillaries.
Question 3 of 5
Which of the following neurotransmitters slows down the activity of neurons to prevent overexcitation?
Correct Answer: C
Rationale: The correct answer is C: GABA. GABA is an inhibitory neurotransmitter that slows down neuron activity by binding to GABA receptors, leading to hyperpolarization of the neuron and reducing the likelihood of firing an action potential. This process helps to prevent overexcitation in the nervous system. A: Acetylcholine is primarily an excitatory neurotransmitter involved in muscle control and cognitive function. B: Dopamine plays a role in reward-motivated behavior and movement, but it is not primarily responsible for slowing down neuron activity. D: Serotonin is involved in regulating mood, appetite, and sleep, but it does not directly slow down neuron activity to prevent overexcitation.
Question 4 of 5
An uncharged atom has an electron configuration of 1s� 2s� 2p⁶ 3s� and a mass number of 14. How many protons does it have?
Correct Answer: B
Rationale: Failed to generate a rationale after 5 retries.
Question 5 of 5
Epithelial tissue, which covers surfaces, is further classified based on the number of cell layers. Simple epithelium has:
Correct Answer: B
Rationale: The correct answer is B: One layer. Simple epithelium consists of a single layer of cells. This arrangement allows for efficient diffusion and absorption due to the short distance between cells and the underlying tissues. Option A is incorrect because epithelial tissue always has at least one layer. Option C is incorrect as it describes stratified epithelium, which has two or more layers. Option D is incorrect as it refers to stratified squamous epithelium, not simple epithelium.
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