A good model of the cell membrane would be

A. a chain link fence.

B. a film of food wrap.

C. a wall of stones and mortar.

D. a river with objects floating in it.

What are the largest particles formed from the breakdown of rock? what are the largest particles formed from the breakdown of rock? gravel silt clay sand?

You walk 10 miles north, 20 miles south, and 5 miles north. Taking north to be the positive y direction, define a position vector that describes your position on the y-axis.

an electron gun emits electrons one at a time at a rate of 1000 electrons/minute. Calulate the current produced by this electron.

Lightning heats the surrounding air to

You look towards a traffic light and see a yellow light. If you were to drive towards it at near the speed of light, what color would it appear? A. Red B. Green

Relating to Newton's Third Law, action and reaction, what is the reaction when a rocket expels gas, smoke and flames from the nozzle end of the rocket engine?

Three light bulbs are connected to a battery in a series circuit. How will the bulbs behave if the circuit is closed?

Luke investigated the heating of water

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond