Cells Worksheet

the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants, it consists mainly of cellulose.
a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
a plastid that contains chlorophyll and in which photosynthesis takes place.
the material or protoplasm within a living cell, excluding the nucleus.
a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence
net passive movement of particles (atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration
the taking in of matter by a living cell by invagination of its membrane to form a vacuole
a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.
a process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.
process of particles, which are sometimes called solutes, moving through a solution or gas from an area with a higher number of particles to an area with a lower number of particles
having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid
having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid
two solutions having the same osmotic pressure across a semipermeable membrane
an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.