Home > Biology > Transport Across the Cell Membranes

Why are transport proteins needed in the cell membrane?

Answer 1

They are responsible for bringing in ions and other small molecules into the cell.

These proteins bring in ions and other small molecules into the cell by facilitating their passage across the membrane through a process known as facilitated diffusion.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Eli Ayoub

Transport proteins are needed in the cell membrane because they facilitate the movement of substances across the membrane, which is essential for the cell's survival and function. These proteins can transport ions, small molecules, and even larger molecules like proteins and nucleic acids. They do this by creating channels or pores in the membrane through which substances can pass, or by binding to specific molecules and carrying them across the membrane. Transport proteins are crucial for maintaining the cell's internal environment, allowing it to take in nutrients, expel waste products, and communicate with other cells.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.