Biology 1. Site of protein modification 2. surrounds all cells; its properties d
ID: 210369 • Letter: B
Question
Biology
1. Site of protein modification
2. surrounds all cells; its properties determine what goes in and what comes out of the cell
3. Rigid structure, surrounds and protects the cell (plants only)
4. Sorts, repackages and sends proteins and lipids to their intended destination in the cell
5. To keep vegetables fresh, they are often placed in water. In this _________________ solution, the cells of the vegetable pull water from their environment into their central vacuoles leading to increased turgor pressure and a crisp, delicious, crunch.
6. The passive movement of molecules directly across a semipermeable membrane with the concentration gradient from an area of high concentration to an area of low concentration.
Simple diffusion
Facilitated diffusion
Osmosis
Active transport
7. The movement of molecules across a semipermeable membrane against the concentration gradient from an area of lower concentration to an area of higher concentration. This process requires a protein channel and energy.
Facilitated diffusion
Simple diffusion
Active transport
Osmosis
Explanation / Answer
1) Site of protein modification - Golgi apparatus.
The Golgi apparatus is a major collection and dispatch place of protein products, which are received from the endoplasmic reticulum. These proteins are modified and destined for secretion by the process of exocytosis and for use in the cell.
2) Cell Membrane - Surrounds all cells; its properties determine what goes in and what comes out of the cell.
Cell Membrane is selectively permeable structure. It separates the interior of all cells from the outside surroundings. It protects the cell from its surroundings. It controls the movement of substances in and out of cells and organelles.
3) Cell Wall - Rigid structure, surrounds and protects the cell (plants only)
Cell Wall is composed of cellulose, which gives stability to the plant cells . It surrounds just outside the cell membrane. It is tough, flexible and rigid.
4) Golgi Apparatus - Sorts, repackages and sends proteins and lipids to their intended destination in the cell.
Golgi Apparatus organelle, which modifies, sorts and repackages proteins from the endoplasmic reticulum and send proteins to their final destination.
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