ATI TEAS 7
ATI TEAS 7 Version 1 Science Questions
Question 1 of 5
Which of the following properties does soap, an emulsifier, have that make it useful for washing dirt off one's hands with water?
Correct Answer: A
Rationale: Soap acts as an emulsifier due to its dual polar (hydrophilic) and nonpolar (hydrophobic) nature, allowing it to effectively bond oil and water, making option A the correct choic
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Question 2 of 5
In a hypertonic solution, water flows through aquaporins embedded in the plasma membrane of the cell. This type of transport is best known as which of the following?
Correct Answer: C
Rationale: In a hypertonic solution, water moves out of the cell through aquaporins due to the higher solute concentration outside the cell. This process is known as osmosis, which involves the movement of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration. Osmosis is a passive process, meaning it does not require energy input. Active transport, on the other hand, requires energy to move substances across a membrane. Diffusion is the movement of molecules from an area of high concentration to low concentration without the involvement of aquaporins. Facilitated diffusion, while also passive, requires specific carrier proteins for transport but does not involve the movement of water as seen in osmosis.
Question 3 of 5
Which of the following organs is covered by the pleura, a connective tissue sheath?
Correct Answer: B
Rationale: The pleura is a protective membrane that covers the lungs. It consists of two layers: the visceral pleura (inner layer) and the parietal pleura (outer layer). The pleural space between these layers contains a small amount of fluid that helps reduce friction during breathing movements. The spleen, heart, and liver are not covered by the pleura. Therefore, the correct answer is the lungs.
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Question 4 of 5
The breakdown of lactose in the small intestine is mediated by the enzyme lactase, and the products are galactose and glucose. Galactose and glucose are which of the following?
Correct Answer: D
Rationale: Galactose and glucose are both simple sugars consisting of single sugar units. Therefore, they are classified as monosaccharides. This makes option D the correct answer.
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Question 5 of 5
Which of the following microorganisms lacks its own metabolic pathways and can only reproduce inside a host cell?
Correct Answer: B
Rationale: The correct answer is B: Viruses. Viruses are obligate intracellular parasites, lacking metabolic pathways and being dependent on a host cell for replication. Unlike bacteria, protozoa, or muscle cells, viruses utilize the host cell's resources and machinery to replicate their genetic material and produce new viral particles.