Mucus contains an enzyme called ____ that chemically attacks and kills bacteria
a. lysozyme
b. peroxide
c. lipase
d. lactase
e. protease
A
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Which of the following describes secondary growth?
A) growth in height B) development of leaves and flowers C) growth of herbaceous tissue D) development of wood and bark E) development of fruit
The malleus and incus function to
A) channel sounds in the inner ear. B) amplify sound. C) convert a sound wave into an electrical impulse. D) convert a long wave light into an electrical impulse. E) sense static position.
What are the predicted phenotypes of the male children from the union of a woman who is heterozygous for
hemophilia and a man who has normal blood clotting characteristics? (Use the Punnett square to verify your answer.) a. all normal b. 3 normal : 1 hemophilia c. 1 hemophilia : 1 normal d. 1 hemophilia : 3 normal e. all hemophiliacs
Why are gymnosperms considered to be "naked seed" plants?
A) Their seeds have a thin layer of endosperm. B) They do not produce seeds; they produce only spores. C) Their seeds are not enclosed within ovaries. D) Their seeds develop on the surface of sporophytes.