List of top Biology Questions on Proteins

Identify the incorrect statements.
(A) Bacillus thuringiensis is a transgenic organism.
(B) Bt toxin enters the testes or the ovaries of the insect pest, sterilizes it, and thus prevents its multiplication.
(C) Proteins encoded by cryIAc and cryIIAb control cotton bollworms.
(D) Bt protein exists as an active toxin in Bacillus.
(E) Alkaline pH of the insect gut solubilizes the toxin protein crystals.
Choose the correct answer from the options given below:

Explain the processing of heterogeneous nuclear RNA (hnRNA) into a fully functional mRNA in eukaryotes. Where does this processing occur in the cell?

Observe the schematic representation of assisted reproductive technology given below:
Identify the most appropriate technique depicted in the above diagram.

Match List-I and List-II with respect to proteins and their functions and select the correct option.

List-I		List-II
1.	Collagen	p.	Fights infectious agents
2.	Trypsin	q.	Hormone
3.	Insulin	r.	Enzyme
4.	Antibody	s.	Intercellular ground substance

Match List I with List II

Choose the correct answer from the options given below:

Given below are two statements:
Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal).
Statement II: Adult human haemoglobin, consists of 4 subunits (two subunits of α type and two subunits of β type).
In the light of the above statements, choose the correct answer from the options given below:

This defines the 'Operon'.

Single cell protein refers to edible unicellular microorganism which one of the following belongs to this category?

P-proteins are associated with differentiation of _____.

Which one of the following is the most abundant protein in the animals ?

Which of the folowing structures are present in core particle of nucleosome?

Protein are needed in diet because?

Protein uptake in nucleus occurs by

Oxysome is composed of

Milk protein casein is broken down into paracasein by

The process of separation and purification of expressed protein before marketing is called

In tRNA the region that binds with mRNA is

To increase wool production and to improve the quality of wool, the bacterial genes concerned with biosynthesis of cysteine amino acids involved in formation of keratin protein found in wool are cloned and introduced in sheep.

Which of the following codons codes for the amino acid phenylalanine ?

Which of the following is incorrectly matched?

Which of the following statements is correct regarding the number of codons and their degeneracy?