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Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the effects of certain autoimmune disorders, in which of the following ways should the hypothesis be modified, given the new findings?

A. Lack of worm infestations is the cause of some autoimmune disorders.

B. Worm infestation reduces the severity of certain autoimmune disorders

C. Worm infestation prevents the body from immune malfunction

D. Worm infestations exacerbate the body's immune reactions

Answer Explanation:

The new findings can be used to generate a hypothesis to reflect the beneficial aspect of worm infestations in certain autoimmune disorders, indicating that they can help reduce the severity of the condition.

Therefore, the Correct Answer is B.

More Questions on TEAS 7 Science

  • Q #1: Which of the following demonstrates a chemical reaction of water?

    A. Water boils to produce steam at 100° C (252)

    B. Water Dissolves sugar

    C. Water produces gas with sodium metal

    D. Water and all separate when combined

    Answer Explanation

    a. Water boils to produce steam at 100°C - This is a phase change (from liquid to gas) and not a chemical reaction of water.

    b. Water dissolves sugar - This is a physical change, not a chemical reaction of water.

    c. Water produces gas with sodium metal - This reaction involves the chemical reaction of water with sodium metal to produce hydrogen gas.

    d. Water and oil separate when combined - This is a physical separation, not a chemical reaction of water.

  • Q #2: A strand of DNA bases reads 5' AGCTAGCGT 3, what would the sequence of bases on the contemporary strand read?

    A. 3' STOGUTCGCU

    B. 5' AGCTAGCGT S

    C. 3' SUCGAUCICA

    D. 3' TCGATCGCA 5'

    Answer Explanation

    The complementary strand of DNA is formed by pairing complementary bases. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). Additionally, RNA uses uracil (U) instead of thymine.

    Given the sequence 5' AGCTAGCGT 3', the complementary strand would read:

    3' TCGATCGCA 5'

  • Q #3: Which of the following tissues lines the interior structures of the heart?

    A. Epicardium

    B. Pericardium

    C. Myocardium

    D. Endocardium

    Answer Explanation

    The endocardium lines the interior structures of the heart. It is a thin, innermost layer of the heart wall that lines the heart chambers and valves. It is composed of subendocardial connective tissue and endothelial cells that are continuous with blood vessel endothelium.