Arthropods with mandibles, gills, excretory glands, and statocysts are the:A
insects.
B. spiders.
C. scorpions.
D. crustaceans.
E. mites.
D
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Answer the following statements true (T) or false (F)
1. Anton van Leeuwenhoek is given credit for developing the first compound light microscope. 2. The wavelength of visible light limits the size of objects that can be seen with the compound light microscope. 3. The resolving power of compound light microscopes can be improved by adding additional magnifying lenses. 4. A brightfield microscope can be converted to a darkfield microscope by replacing the condenser on a brightfield microscope with a darkfield condenser. 5. Primary syphilis is usually diagnosed in the clinical microbiology laboratory by the use of a scanning electron microscope.
An individual with Duchenne muscular dystrophy is
likely a __________ who will most likely not live beyond the __________. a. female; teens b. male; twenties c. female; forties d. male; fifties e. male; late thirties
Which of the following protein types would you predict is defective in kidney water balance disorders?
A) aquaporin B) porin C) class ATPase D) anion exchange protein E) GLUT
Which of the following molecules is a pyrimidine?
a. guanine b. phosphate c. uracil d. adenine