Which one of the following is not an adaptation shown by modern birds?  

A.  a respiratory system that allows all of the air to pass through the lungs in one direction
B.  complete division of the heart into right and left halves
C.  endothermy
D.  wings and a long feathered tail
E.  modified beaks and feet to support feeding behavior


D.  wings and a long feathered tail

Biology & Microbiology

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Which is not a subspecialty of anatomy?

a. embryology b. developmental biology c. histology d. cell biology e. endocrinology

Biology & Microbiology

The joint shown here is an example of _____

1.a fibrous joint 2.a joint held together by ligaments 3.a ball and socket joint 4.a cartilaginous joint

Biology & Microbiology

If a particular atom has 27 electrons, 27 protons, and 31 neutrons, its mass number would be 

A. 52. B. 54. C. 56. D. 58.

Biology & Microbiology

If you take into account the amount of ATP generated by ATP synthase per molecule of NADH and per molecule of FADH2 produced, and the number of ATP molecules produced by substrate-level phosphorylation, what is the predicted energy yield of the Krebs cycle, per molecule of glucose in eukaryotic cells?

A. 10 ATP B. 20 ATP C. 30 ATP D. 2 ATP E. 18 ATP

Biology & Microbiology