MCQs of Biology – Structure of the cell

The:” term ‘plasmalemma’ was introduced by:

Cell membrane in animals is composed mainly of the molecules of:

Lipid bilayer is present in:

The most abundant lipid in cell membrane is:

Lipid molecules in plasma membrane are arranged in which manner?

The basic structure of cell membranes:

Which of the following is not true of membrane phosphoglycerides?

What is true about fluid mosaic model?

Carbohydrates present in the plasmalemma are in the form of:

Cell recognition and adhesion occur due to biochemicals of cell membrane named:

Cell recognition is due to:

Which of the following is true of the carbohydrate portion of the cell membrane?

The relative proportion (by weight) of lipid and protein in a cell membrane:

Out of proteins, lipids and carbohdrates present in a cell membrane what is true?

Phospholipid molecules in a membrane are arranged with their ______ on the exterior and their _______ on the interior:

The fluidity of membranes in a plant in cold weather may be maintained by increasing:

Which of the following organisms has the highest proportion of unsaturated fatty acids in their membranes?

Which of the following lacks the protein tubulin?

Of the four classes of cellular macromolecules, which one is not a component of cell membrnes?

Which one does not possess RNA?

Which of the following is not a component of plasma membrane?

Two animal cells arc interconnected by:

Desmosomes are:

Desmosomes are the modification of:

Tonofibrils of desmosomes are made up of:

Which is not a connection between plasma membrane of adjacent cells?

Which one of the following components of plasma membrane is involved in the enlargement of cell surface area:

Gorter and Grendel’s earliest evidence that membrane were formed from a lipid bilayer included:

According to the ‘unit membrane model’ of Robertson , the thickness of cell membrane is about:

Which of the following best describes the appearance of a unit membrane under transmission electron microscpae?

The latest model for plasma membrane is:

‘Fluid mosaic model’ was proposed by:

Which one of the following features is predicted by singer- Nicolson fluid mosaic model of biologic membranes ?

According to fluid mosaic model, plasma membrane composed of phospholipids and:

In the fluid mosaic model of the cell membrane:

Features of the fluid mosaic model of membrane is include:

According to widely accepted fluid mosaic model cell membranes are semifluid, where lipids and integral protein can diffuse randomly. In recent years, this model has modified in several respects. In this regard, which following statements are incorrect?

Which of the following is characteristic of phospholipids of plasma membrane ?

Which of the following statements correctly characterizes membrane protein?

The integral protein, when removed from plasma membrane, will show which one of the following properties ?

How do membranes function as a locus of biochemical reactions?

Larger globular proteins which project beyond the lipid layers on both sides, help to pass water soluble materials through membrane are:

The plasma membrane of mycoplasma (PPLO) is rich in:

Which is near to plasma membrane?

The Folds of plasma membrane in bacterial cells are known as:

Mesosome in a bacterial cell is:

In prokaryotic cells, the enzymes involved in the oxidation of metabolites are associated with: