What structure do lobsters use for gas exchange?
A) gills
B) lungs
C) skin
D) tracheae
A
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Which of the following Krebs cycle intermediates can be used to produce chlorophyll? Select all correct answers
A. ?-ketoglutarate B. oxaloacetate C. succinyl-CoA
If you observe an animal ingesting large amounts of food at short intervals and material entering and leaving from the same place, also frequently, you could say it is probably an
A. endotherm with an incomplete digestive tract. B. ectotherm with an incomplete digestive tract. C. endotherm with a complete digestive tract. D. ectotherm with a complete digestive tract. E. None of the answer choices is correct.
Bone cells communicate with one another by:
a. Haversian canals. b. cellular extensions running through canaliculi. c. lymphatic vessels. d. diffusion through the matrix. e. lamellae.
Which of the following describes a process that involves viral integration into the host genome?
A. Living B. Prophage C. Replication D. Lytic cycle E. Lysogenic cycle