Question

review questions

1. describe the cell membrane.
2. explain the following terms:

passive transport
diffusion
equilibrium
osmosis
active transport
pinocytosis
phagocytosis
c. cytoplasm. the watery cell fluid that contains the cell organelles is called the cytoplasm. the cytoplasm is located between the cell membrane and the nucleus. many life processes take place in the cytoplasm. the cytoplasm exists in two different phases - a watery (sol) phase and a thicker (gel) phase
review questions

1. cytoplasm is the watery cell fluid that contains
2. where is the cytoplasm located?
3. describe the two phases of cytoplasm.

Explanation:

1. The cell membrane is a phospholipid - bilayer structure that is semi - permeable, controlling the movement of substances in and out of the cell. It also contains proteins for transport and cell - signaling functions.
2. Passive transport is the movement of substances across the cell membrane without the use of energy, down a concentration gradient. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. Equilibrium is the state where the concentration of a substance is the same throughout a space. Osmosis is the diffusion of water across a semi - permeable membrane. Active transport is the movement of substances across the cell membrane against a concentration gradient, requiring energy. Pinocytosis is a form of endocytosis where the cell takes in small droplets of extracellular fluid. Phagocytosis is a form of endocytosis where the cell engulfs large particles or whole cells.
3. Cytoplasm is the watery cell fluid that contains cell organelles. It is located between the cell membrane and the nucleus. The two phases of cytoplasm are a watery (sol) phase and a thicker (gel) phase.

Answer:

1. Cell organelles
2. Between the cell membrane and the nucleus
3. A watery (sol) phase and a thicker (gel) phase