7. Can be likened to a tree trunk, transmits messages away from the cell body to other cells. a. Dendrites
b. cell body
c. mithochondrion
d. Axons

THE Answer is D. axons

explaination.

the axons can be likened to trunk of a tree, which is more slender. it transmits messages away from the cell body to other cells. axons have branches at their tips, but these branches are usually less numerous than dendrites.

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.