AIPMT 2005 | Cell - The Unit of Life Question 82 | Biology

According to widely accepted "fluid mosaic model" cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements are incorrect ?

Proteins in cell membranes can travel within the lipid bilayer

Proteins can also undergo flip-flop movements in the lipid bilayer

Proteins can remain confined within certain domains of the membranes

Many proteins remain completely embedded within the lipid bilayer

AIPMT 2005

MCQ (Single Correct Answer)

-1

The main organelle involved in modification and routing of newly synthesized proteins to their destinations is -

Mitochondria

Endoplasmic Reticulum

Chloroplast

Lysosome

AIPMT 2004

MCQ (Single Correct Answer)

-1

The telomeres of eukaryotic chromosomes consist of short sequences of

Adenine rich repeats

Cytosine rich repeats

Thymine rich repeats

Guanine rich repeats

AIPMT 2004

MCQ (Single Correct Answer)

-1

In chloroplasts, chlorophyll is present in the :-

Outer membrane

Inner membrane

Thylakoids

Stroma

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