The "power stroke" of the myosin head that slides actin past myosin most directly involves _______.
A. binding of ATP
B. binding of ADP
C. release of Pi
D. hydrolysis of ATP
Answer: A. binding of ATP
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The mucous sheet produced by the endostyle traps the microscopic food particles in the water. This sheet is located in the pharynx of what animal?
A. arrow worm B. tunicate C. acorn worm D. lancelet E. crinoid
In addition to glucose, can a cell use lipids or proteins for energy?
What will be an ideal response?
Which statement below characterizes metabolic pathways?
a. They are a random sequences of reactions. b. They are always biosynthetic. c. They are always degradative. d. They are enzyme-mediated sequences of reactions. e. They are always linear reactions.
Influenza infections themselves are usually more annoying than deadly, but the flu can be accompanied by which of the following more serious secondary infections?
A) ear infections B) bronchitis C) pneumonia D) All of the above could be caused by a secondary infection after the flu.