Table of Contents
- 1 What are the molecules in the cell membrane that serve as receptors or binding sites for hormones or other chemical messengers?
- 2 Which molecules make up the bulk of a cell membrane?
- 3 What molecules make the cell surface fuzzy sticky and sugar rich?
- 4 How are phospholipid molecules that make up the surface membrane of a cell organized?
- 5 What is the phospholipid bilayer made of quizlet?
- 6 What makes the cell surface fuzzy?
What are the molecules in the cell membrane that serve as receptors or binding sites for hormones or other chemical messengers?
Exams
| Question | Answer |
|---|---|
| Molecules in cell membrane that serve as receptors or binding sites for hormones or other chemical messengers and generally comprise most of the cell | Proteins |
| 3 major components of cytoplasm | Cytosol, organelles, and inclusions |
| Microvilli are apt to be found in cells that are specialized for | Absorbtion |
Which molecules make up the bulk of a cell membrane?
The basic building blocks of a cell membrane are phospholipids. Phospholipids contain a hydrophobic (insoluble in water) end made up of two fatty acid chains of nonpolar molecules such as carbons and hydrogens. The other end is hydrophilic (soluble in water) and contains polar phosphate molecules.
What molecules make the cell surface fuzzy sticky and sugar rich?
Ch. 3 Test
| Question | Answer |
|---|---|
| The molecules that make the cell surface fuzzy, sticky, and sugar-rich are the: | glycoproteins |
| Protein synthesis occurs on the Golgi apparatus in the cell. | False |
| The greater the osmotic pressure, the greater the tendency of water to move into that area. | True |
What are the molecules in a cell membrane?
Cell membranes are composed of proteins and lipids. Since they are made up of mostly lipids, only certain substances can move through. Phospholipids are the most abundant type of lipid found in the membrane. Phospholipids are made up of two layers, the outer and inner layers.
Which types of molecules are transported by aquaporins?
Which type of molecules are transported by aquaporins? Water, Aquaporins are channels in the membrane that allow water to pass through via osmosis. Aquaporins are unique among the transporters because they are always open.
How are phospholipid molecules that make up the surface membrane of a cell organized?
How are phospholipid molecules that make up the surface membrane of a cell organized? A two-layered structure is formed, with the hydrophobic tails facing in to each other, sandwiched between the hydrophilic heads that face the interior of the cell and the exterior environment.
What is the phospholipid bilayer made of quizlet?
Phospholipid Bilayer – which are made up of phosphates and lipids. They create a partially permeable membrane, which allows only certain substances to diffuse through the membrane. 5. Cholesterol – it maintains the fluidity of cell surface membrane.
What makes the cell surface fuzzy?
What are the molecules that make the cell surface fuzzy sticky and sugar rich? Protein synthesis occurs on the Golgi apparatus in the cell. The greater the osmotic pressure, the greater the tendency of water to move into that area.