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A homopolymer has only one type of building block called monom
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A homopolymer has only one type of building block called monomer repeated ' ' number of times. A heteropolymer has more than one type monomer. Proteins are heteropolymers made of aminoacids. While a nucleic acid like DNA and RNA is made of only 4 types of nucleotide monomers, proteins are made of :

A
20 types of monomers

B
40 types of monomers

C
3 types of monomers

D
only one type of monomer

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Book:

Modern ABC Biology Class 11 Part 1 (Modern ABC)

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The function and shape of a protein is affected by sequence of 20 types of amino acids, each having an amino group -NH​, a carboxylic acid group - COOH, a hydrogen atom each attached to carbon located next to −COOH group and a side chain R which varies from one amino to other. (It can be hydrogen or an aliphatic group, an aromatic or heterocyclic group).
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A homopolymer has only one type of building block called monomer repeated ' ' number of times. A heteropolymer has more than one type monomer. Proteins are heteropolymers made of aminoacids. While a nucleic acid like DNA and RNA is made of only 4 types of nucleotide monomers, proteins are made of :
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Practice questions from Modern ABC Biology Class 11 Part 1 (Modern ABC)

Question 1
Medium
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Enzymes are biocatalysts. They catalyse biochemical reactions. In general they reduce activation energy of reactions. Many physico-chemical processes are enzyme mediated. Some examples of enzyme mediated reactions are given below. Tick the wrong entry :
  1. Dissolving in water
  2. Untwining the two strands of DNA
  3. Hydrolysis of sucrose
  4. Formation of peptide bond
Topic

Topic:

Biomolecules

Book

Book:

Modern ABC Biology Class 11 Part 1 (Modern ABC)

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Question 2
Easy
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Why does water behave as a dipolar ion?
Topic

Topic:

Biomolecules

Book

Book:

Modern ABC Biology Class 11 Part 1 (Modern ABC)

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Question 3
Hard
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Find and write down structure of 10 interesting small molecular weight biomolecules. Find if there is any industry which manufactures the compounds by isolation. Find out who are the buyers?
Topic

Topic:

Biomolecules

Book

Book:

Modern ABC Biology Class 11 Part 1 (Modern ABC)

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Question 4
Easy
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Give the reasons for the following statement : In human beings some essential amino acids are required.
Topic

Topic:

Biomolecules

Book

Book:

Modern ABC Biology Class 11 Part 1 (Modern ABC)

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Practice more questions from Biomolecules

Question 1
Easy
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Assertion : Human diet should compulsorily contain glycine, serine and tyrosine.
Reason : Essential amino acids can not be synthesized in the human body. 
  1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. If Assertion is true but Reason is false.
  4. If both Assertion and Reason are false.
Topic

Topic:

Biomolecules

Book

Book:

NEET Question Bank i Biology for AIIMS (Disha)

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Question 2
Hard
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Views: 5,292

5 -bromouracil base is analogous to
  1. Adenine
  2. Gaunine
  3. Thymine
  4. Cytosine
Topic

Topic:

Biomolecules

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Question 3
Easy
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Views: 5,327

Allosteric modulation is due to the inhibitory action of enzyme by :
  1. (a) Competitive inhibition
  2. (b) Substrate concentration
  3. (c) Products of reaction
  4. (d) Enzyme concentration
Topic

Topic:

Biomolecules

Book

Book:

Modern ABC Biology Class 11 Part 1 (Modern ABC)

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Question 4
Easy
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Views: 5,461

Antiparallel strands in DNA is due to
  1. Disulphide linkage
  2. Hydrogen bond
  3. Phosphodiester bond
  4. Glycosidic bond
Topic

Topic:

Biomolecules

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Practice questions on similar concepts asked by Filo students

Question 1
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CHAPTER SUMMARY: Hypertension was in better control. Triglyceride levels are also high. Changed recently, more than 2 years. Until the death of his wife, his diabetes and hypertensive medication. These medications have not been changed in He takes oral hypoglycemic medication, a diuretic, and an antihypertensive. His blood glucose level is high at 210 mg/dl. Cholesterol and hypertensive changes in the eye. His lungs are clear, and his bowel and 92 beats/min, respectively. He demonstrates atherosclerotic and weighs 210 pounds. Today his blood pressure and pulse are 170/90. On physical examination, Mr. Draecus is 5 feet 10 inches tall, and he time but when he eats it upsets his stomach. His weight has not Short of breath, his strength has decreased, and he is hungry all the time. He tells the nurse practitioner that he is always tired and clinic since the death of his wife, where he sees a family nurse practitioner. His own home. Anthony's daughter has brought him to the rural health away. The daughter insisted that he move in with her in spite of the Until her death, he lived with her in their own home to 18 years old. Mr. Draecus's wife of 50 years died a few months ago. Anthony Draecus is a 72-year-old male with type diabetes mellitus CASE STUDY and her family. His daughter has six children ranging in age from 7 3. e about 100 miles beats/min the fight-or-flight reaction? eases. Control his hypertension. C. B.. consider first? D. Stress triad Stage of exhaustion Stage of resistance B. A. Alarm reaction D. Lack of control of his hypertension C. Stress D. Hunger, normal bowel sounds, and dependent edema Decreased strength, dependent edema, and clear lungs Chronic fatigue, blood pressure at 170/92, and pulse at 92 A. Diabetes mellitus, hypertension, and atherosclerosis Which information from Mr. Draecus's history is characteristic of D. Teach Mr. Draecus's daughter how to manage her father's dis Help Mr. Draecus identify his stressors. Draecus's symptoms would characterize responses of the: B. Age-related body changes A. Lack of control of his diabetes mellitus
Topic

Topic:

Biology

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Question 2
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156 Figure Concept of activation energy the stable substrate and the product. Implicit intermediate structural states are unstable. Stability is something related to energy status of the molecule or the structure. Hence, when we look at this pictorially through a graph it looks like something as in Figure . The -axis represents the potential energy content. The -axis represents the progression of the structural transformation or states through the 'transition state '. You would notice two things. The energy level difference between and . If ' ' is at a lower level than ' ', the reaction is an exothermic reaction. One need not supply energy (by heating) in order to form the product. However, whether it is an exothermic or spontaneous reaction or an endothermic or energy requiring reaction. the 'S' has to go through a much higher energy state or transition state. The difference in average energy content of ' ' from that of this transition state is called 'activation energy'. Enzymes eventually bring down this energy barrier making the transition of 'S' to 'P' more easy.
Topic

Topic:

Cell: Structure and Functions

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Question 3
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relative growth rates. by in a given time to the growth of living system can ment and the comparison of totai lute growth rate. (ii) The growth of sed on a common basis, e.g., per ative growth rate. In Figure are of different sizes but shows e to give leaves, and . However, growth rate. Which one and why? ou think are necessary conditio gen and nutrients as very essent in size by cell enlargement whit
Topic

Topic:

Plant Physiology

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Question 4
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The amount of the filtrate formed by the kidneys per minute is called glomerular filtration rate (GFR). GFR in a healthy individual is approximately , i.e., 180 litres per day ! The kidneys have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by juxta glomerular apparatus (JGA). JGA is a special sensitive region formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at the location of their contact. A fall in GFR can activate the JC cells to release renin which can stimulate the glomerular blood flow and thereby the GFR back to normal. A comparison of the volume of the filtrate formed per day (180 litre per day) with that of the urine released ( 1.5 litres), suggest that nearly 9 per cent of the filtrate has to be reabsorbed by the renal tubules. Thi process is called reabsorption. The tubular epithelial cells in differer segments of nephron perform this either by active or passive mechanism For example, substances like glucose, amino acids, , etc., in the filtra are reabsorbed actively whereas the nitrogenous wastes are absorbed passive transport. Reabsorption of water also occurs passively in the initi segments of the nephron (Figure 19.5). During urine formation, the tubular cells secrete substances like ) and ammonia into the filtrate. Tubular secretion is also an importa step in urine formation as it helps in the maintenance of ionic and a base balance of body fluids. 19.3 Function of the Tubules Proximal Convoluted Tubule (PCT): PCT is lined by simple cubo brush border epithelium which increases the surface area for reabsorpt Nearly all of the essential nutrients, and 70-80 per cent of electrol and water are reabsorbed by this segment. PCT also helps to main the and ionic balance of the body fluids by selective secretic hydrogen ions, ammonia and potassium ions into the filtrate an absorption of from it. Henle's Loop: Reabsorption is minimum in its ascending However, this region plays a significant role in the maintenance of osmolarity of medullary interstitial fluid. The descending limb of les Henle is permeable to water but almost impermeable to electrolytes concentrates the filtrate as it moves down. The ascending li impermeable to water but allows transport of electrolytes activ passively. Therefore, as the concentrated filtrate pass upward, diluted due to the passage of electrolytes to the medullary fluid. Distal Convoluted Tubule (DCT): Conditional reabsorption and water takes place in this segment. DCT is also capable of reabs of and selective secretion of hydrogen and potassium io to maintain the and sodium-potassium balance in blood
Topic

Topic:

Human Physiology

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Question Text
A homopolymer has only one type of building block called monomer repeated ' ' number of times. A heteropolymer has more than one type monomer. Proteins are heteropolymers made of aminoacids. While a nucleic acid like DNA and RNA is made of only 4 types of nucleotide monomers, proteins are made of :
TopicBiomolecules
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes98