5) Gases such as oxygen and carbon dioxide cross the plasma membrane by A) special gas transport proteins. B) osmosis through the lipid bilayer. C) active transport through protein channels. D) passive diffusion through the lipid bilayer.

Scientists decide the age of different rock layers by the things that they uncover in the rock. Which of the items below could scientists use to date a layer of rock? A.) a green leaf that fell off a tree B.) an insect flying near the dig site C.

What causes unsaturated fatty acid to have different shape than saturated

Imessage games anyone?

Are decomposers part of an energy pyramid?

How many cells do most organisms have

What is the best way to classify two different organisms that have similar appearance and are found in the same environment?

Glucose, fructose, and sucrose are all carbohydrates. what elements make up all carbohydrates

Organism that gets food by eating other organisms

What within the nucleus is responsible for providing the cell with its unique characteristics?

Question 20 Loops of bacterial DNA that scientists use to make recombined DNA are called plasmids. True False