Which of the following is true about cells?
a. cells have specialized components that perform different, specific functions.

b. cells have specialized components that all perform the same functions.

c. a cell's components are all identical and perform the same function.

d. a cell has a single component that performs all of the cell's different, specific functions.

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

Which entry is in the wrong position in the table?

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.