The molecule shown above is testosterone, a substance that has important regulatory functions in
humans and many other animals. Molecules with regulatory functions like testosterone are called
____.
a. phytosterols
b. enzymes
c. lipoproteins
d. hormones
e. receptors
D
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The active site of an enzyme ____
a. is where the coenzyme is located b. is a specific bulge or protuberance on an enzyme c. is a groove or crevice in the structure of the enzyme complementary to the substrate d. will react with only one substrate no matter how many molecules may resemble the shape of the substrate e. rigidly resists any alteration of its shape
What is the difference between vitamins and minerals?
A. Vitamins cannot be made by our bodies, while minerals can. B. Vitamins are organic nutrients, while minerals are inorganic nutrients. C. Vitamins are inorganic nutrients, while minerals are organic nutrients. D. There are no main difference between vitamins and minerals.
Flukes are divided into the groups Monogenea and Digenea. Monogenea have a posterior holdfast with hooks, clamps, and suckers, while Digenea have suckers but never hooks and clamps. Monogenea have only one host in the life cycle and usually live on gills or skin of fish and amphibians. Digenea have at least two hosts, and are named for having two reproductive states in their life cycle (an adult and intramolluscan phase).Based on this information, the blood fluke Schistosoma would be classified as
A. an endoparasite and Monogenean. B. an ectoparasite and Monogenean. C. an endoparasite and Digenean. D. an ectoparasite and Digenean.
Transmission genetics studies the pattern of ____________________ as traits are passed from generation to generation
Fill in the blank(s) with correct word