Which of the following is a component of a vertebrate kidney (select all correct choices)?
A. glomerulus
B. Bowman's capsule
C. renal tubules
D. collecting ducts
E. Malphigian tubules
A,B,C,D
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The skeletal muscle that flexes (bends) the forearm after pronation (palm down position as in a pull-up) is the brachialis. Its origin is the humerus, and the insertion is the upper front of the ulna. Identify the class of lever involved and explain why you made this choice.
What will be an ideal response?
Which element is most likely to share electrons with other atoms in joint orbitals?
a. chlorine (7 valence electrons) b. calcium (2 valence electrons) c. argon (8 valence electrons) d. carbon (4 valence electrons) e. potassium (1 valence electron)
Scaffold proteins organize groups of intracellular signaling kinases into signaling complexes
__________________ Indicate whether the statement is true or false.
Nitrogen fixation consists of the
A) conversion of ammonia to nitrate. B) production of ammonium from decomposing organic matter. C) conversion of N2 to ammonia. D) conversion of N2 to ammonia or nitrate.