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TEAS Science Practice Test #3 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 #3 2 flashcards as text

  1. Which type of muscle tissue is found in the walls of the digestive tract and blood vessels?

    Answer: Smooth muscle

    Smooth muscle is involuntary and non-striated, found in hollow organs like the intestines, stomach, bladder, and blood vessel walls. Cardiac muscle is found only in the heart, and skeletal muscle is responsible for voluntary movement.

  2. What is the purpose of meiosis in human reproduction?

    Answer: To produce gametes (sperm and egg cells) with half the normal chromosome number

    Meiosis is a type of cell division that produces four genetically unique gametes (sperm or egg cells), each with half the chromosome number (haploid, n=23) of the parent cell. When fertilization occurs, the full number (diploid, 2n=46) is restored.

  3. Which of the following best describes the function of the lymphatic system?

    Answer: To return excess interstitial fluid to the bloodstream and support immune defense

    The lymphatic system collects excess fluid from tissues (lymph), returns it to the bloodstream, and houses lymphocytes and other immune cells. Lymph nodes filter pathogens and debris from lymph fluid.

  4. In the scientific method, what is a "hypothesis"?

    Answer: A testable, falsifiable prediction about the outcome of an experiment

    A hypothesis is a tentative, testable explanation or prediction for an observed phenomenon. It must be falsifiable — meaning it can be proven wrong through experimentation. It is not a proven fact but a starting point for investigation.

  5. Which element has the atomic number 8?

    Answer: Oxygen

    Atomic number refers to the number of protons in an atom's nucleus. Oxygen (O) has 8 protons, making it element number 8 on the periodic table. Carbon is 6, Nitrogen is 7, and Fluorine is 9.

  6. Which hormone, produced by the adrenal glands, is released in response to acute stress?

    Answer: Epinephrine (adrenaline)

    Epinephrine (adrenaline) is released rapidly by the adrenal medulla in response to acute stress, triggering the "fight or flight" response: increased heart rate, dilation of airways, and redirection of blood to muscles. Cortisol is released in response to more sustained stress.