Explain how some substances cross the cell membrane by facilitated diffusion?

In sexual reproduction, offspring are genetically different from the parents. This is because

Bats contain brown fat between their shoulder blades. how could this brown fat be an adaptation to torpor?

What happens when cells start to swell up with water

Which statements describe color and streak? Check all that apply. - streak is the color of a minerals powder.

What must occur for a message to be sent from the outside of the cell to inside the cell? A. A signaling molecule binds with a membrane protein. B. Transport proteins form a channel for a large molecule. C.

Why is it necessary to cool a hot supersaturated solution slowly during a recrystallization?

Name the two energy-equivalent molecules that contain three phosphates as part of their structure. what makes these two molecules different? how many high energy phosphate bonds do they contain? nutrition

During what period of time has the sunbelt region of the u. s. grown most quickly?

The axial skeleton includes the A) vertebra, skull, and ribs B) hip bones, knees, and feet C) shoulder bones, elbows, and hands D) bones of the fingers and toes

After transcription, nuclear RNA is capped, polyadenylated, spliced. After successful splicing, proteins are added to the mature mRNA at the exon junction complex and then transported to the cytoplasm.