- Which of the following is NOT one of the four main components of all plasma membranes?
- What does the hardened outer layer of seeds prevent?
- When phospholipids are placed in water, they spontaneously form which of the following?
- The lipid bilayer that forms the core of all cell membranes is composed primarily of
- The lack of double bonds in phospholipids with saturated fatty acids allow them to pack together tightly, and therefore the membrane is _______________ fluid. Kinks introduced by double bonds in lipids with unsaturated fatty acids prevent them from packing together tightly, and therefore the membrane is ___________ fluid.
- The cell wall of which type of cell is composed of chitin?
- What type of microscope can be used to see the two phospholipid layers in a plasma membrane, as in this image?
- Which of the following are typical components of biological membranes?
- Although a eukaryotic cell membrane can contain many different lipids, they can be classified in three groups: glycerol phospholipids, ________________ , and _______________.
- Cells that are part of the same tissue type recognize each other based on
- Eukaryotic flagella are actually outward projections of the cell's interior. The microtubules in the flagella originate from
- The fibrous protein, ____________, found in the extracellular matrix of animal cells, is also a major component of cartilage and tendons.
- Which type of movement is made possible by the arrangement of actin fibers?
- Which structure forms a protective layer rich in glycoproteins on the surface of animal cells?
- The cell walls of plants and protists are made of the polysaccharide _____________ while the cell wall of fungal cells are made of the polysaccharide _________________.
- Which of the following is a defining feature of biological membranes?
- The space between the two membranes of a mitochondrion is known as the ________________ space
- Adherens junctions can be found in the cells of vertebrates and invertebrates and are based on the protein
- Surface ____________ give cells their identity. In multicellular organisms, this allows the recognition of cells that are of the same tissue type.
- The eukaryotic cell structure involved in supporting the shape of the cell and anchoring organelles to fixed locations is the