15 points please help Models of the human immunodeficiency virus (HIV) and an animal cell are shown below.

What is the difference in the function of the glycoprotein structures of an HIV virion and the cilia
of an animal cell?
The glycoprotein structures are used for attachment, and the cilia are used to move fluids
surrounding the cell.
The glycoprotein structures are used to obtain nutrition, and the cilia are used to secrete
proteins.
The glycoprotein structures are used to provide physical support for the viral envelope, and
the cilia strengthen the cell membrane.
The glycoprotein structures are used for defense, and the cilia are used for locomotion.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.