Cell Biology Interview Preparation Guide
Download PDF
Add New Question

Cell Biology Interview Questions and Answers will teach us now that The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing, and is often called the building block of life. Some organisms, such as most bacteria, are unicellular. So learn every thing about the Cell Biology with this Cell Biology Interview Questions with Answers guide

110 Cell Biology Questions and Answers:

1 :: What is the difference between plasma membrane and cell wall?

Plasma membrane and cell wall is not the same thing. Plasma membrane, also called cell membrane, is the outer membrane common to all living cells and it is made of a phospholipid bilayer, embedded proteins and some appended carbohydrates.

Because cell membranes are fragile, in some types of cells there are even outer structures that support and protect the membrane, like the cellulose wall of plant cells and the chitin wall of some fungi cells. Most bacteria also present an outer cell wall made of peptidoglycans and other organic substances.

Cell Structure Review - Image Diversity: cell wall
Post Your Answer

2 :: What are the chemical substances that compose the plasma membrane?

The main constituents of the plasma membrane are phospholipids, proteins and carbohydrates. The phospholipds, amphipathic molecules, are regularly organized in the membrane according to their polarity: two layers of phospholipids form the lipid bilayer with the polar part of the phospholipids pointing to the exterior of the layer and the non polar phospholipid chains in the interior. Proteins can be found embedded in the lipid bilayer and there are also some carbohydrates bound to proteins and to phospholipids in the outer face of the membrane.
Post Your Answer

3 :: Do bacteria cells have nucleus?

In bacteria the genetic material is dispersed in the cytosol and there is no internal membrane that delimits a nucleus.
Post Your Answer

4 :: Is there any bacteria made of more than one cell?

There are no pluricellular bacteria. All bacteria are unicellular prokaryotic.
Post Your Answer

5 :: What is the plasma membrane of the cell? What are its main functions?

The plasma membrane is the outer membrane of the cell it delimits the cell itself and a cell interior with specific conditions for the cellular function. Since it is selectively permeable the plasma membrane has an important role for the passage of substances inwards or outwards.

Cell Structure Review - Image Diversity: cell membrane
Post Your Answer
Add New Question