Which of the following accurately describes an example of how materials can move across the cell membrane through active transport?
answer

a protein acts as a channel to allow large, hydrophilic molecules to diffuse across the cell membrane.

a protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration.

What must be true for natural selection to heppen

Which of the following is an example of competition that could be found in a forest? question 14 options: deer eat berries and their droppings seed new areas creating more berry bushes two fox populations utilize the same rabbit population as their main food source two hawk populations utilize the same scorpion population as their main food source lack of sunlight due to changes in the seasons restricts the growth of certain plants

Which best describes what you will do in the reaching your academic potential course?