Which of the following is a characteristic of smooth muscle?
A. Intercalated discs connect adjacent cells
B. Found in the walls of the digestive tract
C. Attached to the skeleton by tendons
D. Fibers are striated in appearance
Answer: B
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In a molecule of nitrogen, three pairs of electrons are shared by two nitrogen atoms. The type of bond that is formed is an example of a ________ bond
A) single trivalent B) double divalent C) triple covalent D) polar covalent E) hydrogen
The purpose of having valves in the cardiovascular system is to
A) ensure that blood flows in one direction. B) prevent blood from flowing too quickly. C) regulate blood pressure. D) provide the force for circulation. E) provide sounds so that heart health can be monitored.
The process by which a cell receives and responds to incoming messages is called
__________ transduction. Fill in the blank(s) with correct word
Wild animals may be given vaccines to prevent spread of disease
Indicate whether the statement is true or false