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Biology Flashcards

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

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  1. What is the main function of the hormone insulin?

    Answer: Lower blood glucose

    Insulin promotes glucose uptake by cells, lowering blood sugar.

  2. In an ecosystem, which trophic level typically contains the most available energy?

    Answer: Primary producers

    Producers hold the most energy, which decreases at each higher trophic level.

  3. Which process produces genetically identical daughter cells?

    Answer: Mitosis

    Mitosis produces two genetically identical diploid daughter cells.

  4. Which blood vessels carry oxygenated blood away from the heart (except the pulmonary artery)?

    Answer: Arteries

    Arteries carry blood away from the heart, usually oxygenated.

  5. What is the role of messenger RNA (mRNA) in protein synthesis?

    Answer: Carries the genetic code from DNA to the ribosome

    mRNA transcribes DNA's code and delivers it to the ribosome for translation.

  6. Which of the following is an example of a density-dependent limiting factor?

    Answer: Disease spreading in a crowded population

    Disease transmission increases with population density, making it density-dependent.

  7. The semipermeable membrane of a cell allows water to move from low to high solute concentration. This process is:

    Answer: Osmosis

    Osmosis is the passive diffusion of water across a semipermeable membrane.