Q: The term 'Protein' is derived from the Greek word 'Proteios' which means

The term protein is derived from the Greek word "proteious' which means of prime importance, as proteins are major structural and functional components of the bodySo, the correct answer is 'of prime importance'

Question 1

The most important element associated with protoplasm and proteinaceous materials of plants is

Accepted Answer

Proteins are macromolecules synthesized from Nitrogen containing monomers; the amino acids. The amino acids have Nitrogen in the amino group attached to the $\alpha$-carbon atom. Basic amino acids have more than one amino groups present in their structure. Thus, nitrogen is the most important element required for synthesis of proteinaceous materials.So, the correct answer is 'Nitrogen'

Question 2

Which of the following statements is not correct?

Accepted Answer

(A) Enzymes are proteins that catalyze biological reactions. Thus, the option A is correct.(B) Enzymes act efficiently at a optimum value of temperature and pH. Thus, option B is incorrect.(C) Co-enzymes do not increase the activities of enzymes. They help enzymes in the catalytic activity. Co-enzymes bind to the active site of the catalyst and participate in the enzyme activity. Thus, option C is incorrect. (D) Enzymes are highly specific in their action on substrates.Thus, option D is correct.

Question 3

Mark the wrong statement about enzymes

Accepted Answer

Option (B) is incorrect. Enzymes are efficient and biological catalysts which are needed only in very small amounts for their action but each enzyme can catalyse only a specific selective reactions. This is often referred to as "the lock and key" model.

Question 4

A cell cannot live without

Accepted Answer

Proteins are body building molecules and provide the structural framework for cells. No cell can exist without proteins. Thus, even the cells which are physiologically dead at maturity like xylem tracheids and vessels have proteins. These cells do not have any enzymes. Chloroplasts are absent in animal cells. Similarly, phytochromes are not expected in non-photosynthetic cells.

Question 5

Find out the wrongly matched pair.

Accepted Answer

Cellulose is a macromolecule of glucose. It is homopolymer of glucose and no other subunit is used in its structure.

Question 6

The difference among species is due to the difference in its ________ components.

Accepted Answer

In organisms the genes code for proteins. The proteins are not the same because of the variation in genes that exist within organisms of the same species due to mutation and recombination.So, the correct answer is protein'

Question 7

Which of the following are the components only of a plant cell?

Accepted Answer

Cellulose and starch both are polysaccharide carbohydrates found in plants. A plant cell is characterized by a cellulosic cell wall, which is dead at maturity. Cellulose is made up of glucose molecules. Starch is the storage polysaccharide, i.e. plants store their food in the form of starch. Starch is also made up of glucose.So, the correct answer is 'Cellulose and starch'

Question 8

The term 'Protein' is derived from the Greek word 'Proteios' which means

Accepted Answer

The term protein is derived from the Greek word &#34;proteious' which means of prime importance, as proteins are major structural and functional components of the bodySo, the correct answer is 'of prime importance'

Question 9

Enzymes are mainly composed of:

Accepted Answer

Enzymes are mainly composed of globular proteins. When an enzyme is formed, it is made by stringing together between 100 and 1,000 amino acids in a very specific and unique order. The chain of amino acids then folds into a unique shape. That shape allows the enzyme to carry out specific chemical reactions -- an enzyme acts as a very efficient catalyst for a specific chemical reaction. Enzymes are, in general, globular proteins.

Question 10

Glycogen is found in

Accepted Answer

Glycogen is a storage form of glucose in animals. Animals usually store glucose as glycogen in liver and muscles. Glycogen is found in the form of granules in the cytosol/ cytoplasm of the liver and muscle cells.

Biomolecules

Biology
9000 Views

The most important element associated with protoplasm and proteinaceous materials of plants is

Which of the following statements is not correct?

Mark the wrong statement about enzymes

A cell cannot live without

Find out the wrongly matched pair.

The difference among species is due to the difference in its ________ components.

Which of the following are the components only of a plant cell?

The term 'Protein' is derived from the Greek word 'Proteios' which means

Enzymes are mainly composed of:

Glycogen is found in

Biomolecules

Biology 9000 Views

The most important element associated with protoplasm and proteinaceous materials of plants is

Which of the following statements is not correct?

Mark the wrong statement about enzymes

A cell cannot live without

Find out the wrongly matched pair.

The difference among species is due to the difference in its ________ components.

Which of the following are the components only of a plant cell?

The term 'Protein' is derived from the Greek word 'Proteios' which means

Enzymes are mainly composed of:

Glycogen is found in

Biology
9000 Views