How does the extra mucus in a runny nose protect against microbial infection?
What will be an ideal response?
Airborne microbes are trapped in the mucus, which can then drip out of the nose or be swept into the pharynx by cilia and swallowed. Additionally, bacteria are killed by lysozymes in the mucus.
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Spore germination followed by cell divisions results in the production of
(a) a sporophyte. (b) an antheridium. (c) a zygote. (d) a gametophyte.
The most general of the pituitary hormones, in that it may affect almost any cell in the body, is
a. the adrenocorticotropic hormone. b. the thyroid-stimulating hormone. c. gonadotropin. d. somatotropin. e. prolactin.
How did Meselson and Stahl rule out the conservative model of DNA replication using equilibrium density gradient centrifugation?
What will be an ideal response?
What number are the Actin filaments?
What will be an ideal response?