Describe how h. habilis might have lived

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.

What is the next step in muscle contraction after the actin changes shape?

5. which of the following is not true about performing biological investigations? a. most scientists do not use the metric system or si. b. scientists are trained to conduct their investigations safely. c. the metric system and the revised si are based on multiples of 10. d. reading and understanding the steps before conducting an experiment is necessary for safety.