What would happen if the cell membrane were not selectively permeable? Support your response

A mixture of mineral grains and rock fragments organic material water and gas that can support plant growth is called

Where does the cotton come from that is used to make clothing? plants algae bacteria worms

When plants make flowers, gene A is expressedin whorls 1 and 2, gene B is expressed in whorls 2 and 3 and gene C in whorls 3 and 4; gene D in contrast is expressed in 2,3 and 4.

Which condition causes ocean salinity to decrease? a. river water flowing out into the ocean b. low levels of precipitation c. high levels of evaporation d. freezing of polar ice caps

If you touch a hot object with your finger, you quickly move your finger away without having to think about i. this is a reflex action. a. what is the stimulus is this reflex action? b. what is the response int his reflex action? c.

What is a reproductive strategy? O A. The way that a species hides from prey O B. The way a species produces offspring O C. The adaptations that an offspring passes on O D. The DNA that is passed onto an offspring

What are the three things needed for photosynthesis

What evolutionary feature would distinguish phytoplankton from zooplankton?

What kind of organisms make up a food web

In this experiment, why didn't we just use ethanol to extract the trimyristin (instead of dichloromethane) ? this would have saved us a step and we would have been able to recrystallize directly after filtration.