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TEAS Science Practice Test #4 2 Flashcards

6 cards from real TEAS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 TEAS Science Practice Test #4 2 flashcards as text

  1. Which of the following describes the function of the nephron?

    Answer: To filter blood and produce urine in the kidneys

    The nephron is the functional unit of the kidney. It filters blood under pressure (in the glomerulus), reabsorbs needed substances (water, glucose, ions), and produces urine from the remaining waste products.

  2. What is the difference between "mitosis" and "meiosis"?

    Answer: Mitosis produces two identical diploid cells; meiosis produces four unique haploid cells

    Mitosis produces two genetically identical diploid (2n) daughter cells for growth and repair. Meiosis produces four genetically unique haploid (n) cells (gametes) for sexual reproduction. Crossing over occurs during meiosis, not mitosis.

  3. In a food chain, organisms that make their own food through photosynthesis are called:

    Answer: Producers

    Producers (autotrophs) manufacture their own food using sunlight (photosynthesis) or chemical energy (chemosynthesis). Plants are the primary producers in most food chains, forming the base of the energy pyramid.

  4. What is the pH of a neutral solution?

    Answer: 7

    pH is measured on a scale from 0 to 14. A pH of 7 is neutral (like pure water). Values below 7 are acidic; values above 7 are basic (alkaline). Normal blood pH is approximately 7.35–7.45 (slightly alkaline).

  5. Which of the following best describes the periosteum?

    Answer: The tough, fibrous membrane covering the outer surface of bone

    The periosteum is a dense, fibrous connective tissue membrane that covers the outer surface of bones (except at joint surfaces). It contains blood vessels, lymphatics, and nerves, and plays a key role in bone growth, repair, and sensation.

  6. Which macromolecule serves as the primary long-term energy storage in the body?

    Answer: Lipids

    Lipids (fats) are the primary long-term energy storage molecules, containing more than twice the energy per gram as carbohydrates (9 kcal/g vs. 4 kcal/g). Carbohydrates (glycogen) are used for short-term, readily available energy.