Birds are least related to

A. non-avian dinosaurs.
B. crocodiles.
C. turtles.
D. mammals.
E. amphibians.


E. amphibians.

Biology & Microbiology

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Coal-burning power plants also are big contributors

to __________, which alters habitats and kills many organisms. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The role of the gamma motor neuron is to: _____

a. Contract extrafusal muscle fibers b. Maintain tension in muscle spindles c. Activate golgi tendon organs d. None of the above

Biology & Microbiology

Consider a protein that is targeted to be an integral membrane protein on the surface of a cell. It has a specific functional domain (domain Y) facing the cytoplasm of the cell. How will this protein be oriented in the Golgi?

A) It will be embedded in the Golgi membrane with domain Y facing the cytoplasm of the cell. B) It will be completely within the Golgi lumen, not embedded in the membrane. C) It will be outside the Golgi as a peripheral membrane protein. D) It will be embedded in the Golgi membrane with domain Y facing the lumen of the E.R.

Biology & Microbiology

In a frog embryo, gastrulation _____

A) produces a blastocoel displaced into the animal hemisphere B) occurs along the primitive streak in the animal hemisphere C) proceeds by involution as cells roll over the lip of the blastopore D) occurs within the inner cell mass that is embedded in the large amount of yolk

Biology & Microbiology