When blood glucose concentration is high, pancreatic beta cells secrete insulin, and consequently blood glucose
concentration is increased. Indicate whether the statement is true or false.
False - decreased
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The behavior of parental care exhibited by dinosaurs is thought to be __________ to this behavior in crocodiles and birds because phylogeny shows that these three groups share a common ancestor.
Fill in the blank(s) with the appropriate word(s).
Which skeleton moves in response to muscular
contraction?
a. endoskeleton b. exoskeleton c. hydrostatic skeleton d. all of these e. none of these
Plasma membranes and some internal membranes have which of the following proteins, which trigger a change in the cell's activities in response to a stimulus?
A. Receptor proteins B. Transport proteins C. Adhesion proteins D. Transmembrane proteins E. Peripheral proteins
Which of the following is NOT an example of how microorganisms are beneficial?
a. fermentation of dairy products b. production of ethyl alcohol for biofuel c. cycling of nutrients like nitrogen and phosphorus d. biofilm formation in fuel tanks, pipes, and drains