When physical barriers are broken down, which of the following is the human body's next line of defense against infection or disease?
What will be an ideal response?
Inflammation
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Which of the following does NOT occur during yeast fermentation?
A. Acetylaldehyde is reduced to make ethanol. B. Decrease in NADH. C. Lactate is produced. D. Pyruvate is broken down into CO2 and acetylaldehyde. E. NADH is oxidized to NAD+
What is an ecotone?
a. a parasite that is external to the body b. a parasite that is internal to the body c. an example of an individualistic hypothesis d. a zone between two communities
e. the combination of species in an environment that is constantThe two major categories of extracellular signal molecules that bind to cell surface receptors are ____
a. peptide hormones and steroid hormones b. steroid hormones and neurotransmitters c. neurotransmitters and vitamins d. growth hormones and vitamins e. peptide hormones and neurotransmitters
Which of the following is/are used for osmoregulation and excretion in all but the simplest animals?
a. modifications of the respiratory and digestive systems b. the lining of the digestive tract c. the transport epithelium d. specialized blood vessels