Vertebrate bone consists primarily of a crystalline mixture of which two substances?
A. Ca2+, PO4-
B. Ca2+, SO4-
C. Ca2+, Cl2
D. Na+, Cl-
E. Adenosine, PO4-
A. Ca2+, PO4-
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Which of the following dietary fats is considered to be the least healthy?
A. Saturated fat B. Cholesterol C. Trans unsaturated fat D. All dietary fats are unhealthy
If each nucleotide coded for a single amino acid, how
many different types of amino acids could be combined to form proteins? a. 4 b. 16 c. 20 d. 64 e. none of these
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.
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Figure 35.17
The structure indicated by the letter "B" above represents _____.
A. actin B. a myofibril C. myosin D. the sarcoplasmic reticulum E. a muscle fiber