When required a single Humira pre-filled pen may be stored at room temperature (below 25Â°C) for a maximum period of 14 days, but must be protected from light. Once removed from the refrigerator and stored at room temperature, the pen must be used within 14 days or discarded, even if it is returned to the refrigerator.
1 Cholesterol molecules are selectively dispersed between membrane phospholipids. 2  This helps to keep cell membranes from becoming stiff by preventing phospholipids from being too closely packed together. 3  Cholesterol is not found in the membranes of plant cells.
4. Tonoplast. The tonoplast surrounds a vacuole. Vacuoles are found in the cytoplasm, being membrane-bound compartments with storage functions. 5. Plastids. Plastids are some of the most important parts of the plant cell. They are responsible with photosynthesis, storage and synthesis.lants are multicellular, eukaryotes organisms. They have membrane-bound organelles. A plant cell has a rigid cell wall, a central vacuole, plasmodesmata and plastids, which make it unique among all other type of eukaryotes cells.