Which movement of substances through a cell membrane against a concentration gradient requires energy?

Question 16 options:

osmosis

diffusion

active transport

facilitated diffusion

What can trace fossils tell you about ancient organisms?

Why is it important that alhazen begin t test his hypothesis with experiments?

How do ocean temperatures affect the climate of coastal cities.?

he surface of the cells of some Pseudomonas species are covered in numerous threadlike structures. What is the likely reaction of such a Pseudomonas cell to the presence of a food particle?

18. Of what are phospholipids important components? A. the double bond in hydrocarbon chains B. the plasma membrane of animal cells C. the ring structure of steroids D. the waxy covering on leaves

You are operating a powerboat at night. Your red sidelight must be visible to boats approaching from which direction (s) ? head-on only head-on and both sides head-on and behind head-on and port (left)

A graduate student finds an organism in a pond and thinks it is a freshwater sponge. a postdoctoral student thinks it looks more like an aquatic fungus. how can they decide whether it is an animal or a fungus?

i need the memorize the order of the metric system but i dotn know the sentence ... im pretty sure its king henry something thats all i know can you tell me the rest

At the beginning of cellular respiration, energy is stored in the bonds of blank molecules. At the end of cellular respiration, energy is stored in the bonds of blank molecules. for each one has the options of: ATP, glucose, or oxygen

Which of the following does not contain carbon and energy iron ice cream lettuce or eggs