33 + Mcqs in Bio Molecules in SRMJEEE Page 1 McqOptions

1.	Discriminant of 2x² + 5x - 1 is
A.	25
B.	30
C.	33
D.	35
Answer» D. 35

Discussion

2.	An equation which contains square of unknown variable quantity, but no higher power is called
A.	quadratic equation
B.	linear equation
C.	simple equation complex equation
D.	complex equation
Answer» B. linear equation

Discussion

3.	If b² - 4ac >0, then roots of ax² + bx + c = 0 are
A.	irrational
B.	real
C.	equal
D.	rational
Answer» C. equal

Discussion

4.	Solution set of equation x² - 4 = 0 is
A.	{±4}
B.	{4}
C.	{±2}
D.	{2}
Answer» D. {2}

Discussion

5.	If b² - 4ac >0, and not a perfect square then roots of ax² + bx + c = 0 are
A.	imaginary
B.	rational
C.	equal
D.	irrational
Answer» E.

Discussion

6.	Number of methods to solve a quadratic equation are
A.	2
B.	3
C.	4
D.	5
Answer» C. 4

Discussion

7.	If b² - 4ac = 0, then roots of ax² + bx + c = 0 are
A.	equal
B.	imaginary
C.	irrational
D.	rational
Answer» B. imaginary

Discussion

8.	Number of terms in a standard quadratic equation ax² + bx + c = 0 is
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

9.	If b² - 4ac < 0, then roots of ax² + bx + c = 0 are
A.	equal
B.	irrational
C.	rational
D.	imaginary
Answer» E.

Discussion

10.	Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these
A.	Enhance oxidative metabolism
B.	Help in regulating metabolism
C.	are conjugated proteins
D.	are exclusively synthesised in the body of a living organism as at present
Answer» C. are conjugated proteins

Discussion

11.	Which of the following nucleotide sequences contains four pyrimidine bases?
A.	GATCAATGC
B.	UAGCGGUAA
C.	GCUAGACAA
D.	both b and c
Answer» B. UAGCGGUAA

Discussion

12.	Which purine base is found in RNA?
A.	Thymine
B.	Uracil
C.	Cytosine
D.	Guanine
Answer» E.

Discussion

13.	In RNA, thymine is replaced by
A.	adenine
B.	guanine
C.	cytosine
D.	uracil
Answer» E.

Discussion

14.	Amino acids are produced from
A.	Proteins
B.	Fatty acids
C.	Essential oils
D.	α-keto acids
Answer» B. Fatty acids

Discussion

15.	In which of the following groups are all polysaccharides?
A.	Sucrose, glucose and fructose
B.	Maltose, lactose and fructose
C.	glycogen, sucrose and maltose
D.	Glycogen, cellulose and starch
Answer» E.

Discussion

16.	Which of the following have carbohydrate as prosthetic group
A.	Glycoprotein
B.	Lipoprotein
C.	Nucleoprotein
D.	Chromoprotein
Answer» B. Lipoprotein

Discussion

17.	ATP is
A.	vitamin
B.	Enzyme
C.	Nucleic acid
D.	Nucleotide
Answer» E.

Discussion

18.	Lipids are insoluble in water because lipid molecules are
A.	Hydrophilic
B.	Neutral
C.	Zwitter ions
D.	Hydrophobic
Answer» E.

Discussion

19.	The major role of minor elements inside living organisms is to act as
A.	Co factors of enzymes
B.	Binder of cell structure
C.	Constituent of hormones
D.	Building blocks of important amino acids
Answer» B. Binder of cell structure

Discussion

20.	Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by
A.	base- sugar- phosphate
B.	base- sugar- OH
C.	sugar-phosphate
D.	(base sugar phosphate)n
Answer» B. base- sugar- OH

Discussion

21.	Living cell contains 60-95% water. Water present in human body is
A.	60-65%
B.	70-75%
C.	65-70%
D.	75-80%
Answer» C. 65-70%

Discussion

22.	The “Repeating Unit” of glycogen is
A.	Fructose
B.	Mannose
C.	Glucose
D.	Galactose
Answer» D. Galactose

Discussion

23.	Fluidity of bio-membranes can be shown by
A.	Electron microscope
B.	Tissue culture
C.	Phase-contrast microscope
D.	Fluorescence microscope
Answer» E.

Discussion

24.	Enzymes that catalyse inter-conversion of optical, geometrical or positional isomers are
A.	Ligases
B.	Lyases
C.	Hydrolases
D.	Isomerases
Answer» E.

Discussion

25.	Which is an organic compound found in most cells?
A.	Glucose
B.	Water
C.	Sodium chloride
D.	Oxygen
Answer» B. Water

Discussion

26.	The effectiveness of an enzyme is affected least by
A.	Temperature
B.	Concentration of the substrate
C.	Original activation energy of the system
D.	Concentration of the enzyme
Answer» D. Concentration of the enzyme

Discussion

27.	Which one is diaminodicarboxylic amino acid?
A.	Cystine
B.	Lysine
C.	Cysteine
D.	Aspartic Acid
Answer» B. Lysine

Discussion

28.	Chitin is a
A.	Polysaccharide
B.	Nitrogenous polysaccharide
C.	Lipoprotein
D.	Protein
Answer» C. Lipoprotein

Discussion

29.	Which of the following is not a conjugated protein?
A.	Peptone
B.	Phosphoprotein
C.	Lipoprotein
D.	Chromoprotein
Answer» B. Phosphoprotein

Discussion

30.	Feedback inhibition of enzymes is affected by which of the following
A.	enzyme
B.	substrate
C.	end products
D.	intermediate end products
Answer» D. intermediate end products

Discussion

31.	With reference to enzymes, which one of the following statements is true?
A.	Apoenzyme = Holoenzyme + Coenzyme
B.	Holoenzyme = Apoenzyme + Coenzyme
C.	Coenzyme = Apoenzyme + Holoenzyme
D.	Holoenzyme = Coenzyme – Apoenzyme
Answer» C. Coenzyme = Apoenzyme + Holoenzyme

Discussion

32.	One strand of DNA has the following sequence of nucleotide 3’ ATTCGCTAT 5’ so the other strand of DNA has
A.	5’ TAAGCGATA 3’
B.	3’ TAAGCGATA 5’
C.	5’ GACGCGATA 3’
D.	3’ GACGCGATA 5’.
Answer» B. 3’ TAAGCGATA 5’

Discussion

33.	The ‘‘lock and key’’ model of enzyme action illustrates that a particular enzyme molecule
A.	May be destroyed and resynthesised several times
B.	Interacts with a specific type of substrate molecule
C.	Reacts at identical rates under all conditions
D.	Forms a permanent enzyme-substrate complex
Answer» C. Reacts at identical rates under all conditions

Discussion

Explore topic-wise MCQs in SRMJEEE .

Discriminant&nbsp;of&nbsp;2x&sup2;&nbsp;+&nbsp;5x&nbsp;-&nbsp;1&nbsp;is

An&nbsp;equation&nbsp;which&nbsp;contains&nbsp;square&nbsp;of&nbsp;unknown&nbsp;variable&nbsp;quantity,&nbsp;but&nbsp;no&nbsp;higher&nbsp;power&nbsp;is&nbsp;called

&nbsp;If&nbsp;b&sup2;&nbsp;-&nbsp;4ac&nbsp;&gt;0,&nbsp;then&nbsp;roots&nbsp;of&nbsp;ax&sup2;&nbsp;+&nbsp;bx&nbsp;+&nbsp;c&nbsp;=&nbsp;0&nbsp;are

Solution&nbsp;set&nbsp;of&nbsp;equation&nbsp;x&sup2;&nbsp;-&nbsp;4&nbsp;=&nbsp;0&nbsp;is

&nbsp;If&nbsp;b&sup2;&nbsp;-&nbsp;4ac&nbsp;&gt;0,&nbsp;and&nbsp;not&nbsp;a&nbsp;perfect&nbsp;square&nbsp;then&nbsp;roots&nbsp;of&nbsp;ax&sup2;&nbsp;+&nbsp;bx&nbsp;+&nbsp;c&nbsp;=&nbsp;0&nbsp;are

&nbsp;Number&nbsp;of&nbsp;methods&nbsp;to&nbsp;solve&nbsp;a&nbsp;quadratic&nbsp;equation&nbsp;are

If&nbsp;b&sup2;&nbsp;-&nbsp;4ac&nbsp;=&nbsp;0,&nbsp;then&nbsp;roots&nbsp;of&nbsp;ax&sup2;&nbsp;+&nbsp;bx&nbsp;+&nbsp;c&nbsp;=&nbsp;0&nbsp;are

Number&nbsp;of&nbsp;terms&nbsp;in&nbsp;a&nbsp;standard&nbsp;quadratic&nbsp;equation&nbsp;ax&sup2;&nbsp;+&nbsp;bx&nbsp;+&nbsp;c&nbsp;=&nbsp;0&nbsp;is

&nbsp;If&nbsp;b&sup2;&nbsp;-&nbsp;4ac&nbsp;&lt;&nbsp;0,&nbsp;then&nbsp;roots&nbsp;of&nbsp;ax&sup2;&nbsp;+&nbsp;bx&nbsp;+&nbsp;c&nbsp;=&nbsp;0&nbsp;are

&nbsp;Enzymes,&nbsp;vitamins&nbsp;and&nbsp;hormones&nbsp;can&nbsp;be&nbsp;classified&nbsp;into&nbsp;a&nbsp;single&nbsp;category&nbsp;of&nbsp;biological&nbsp;chemicals,&nbsp;because&nbsp;all&nbsp;of&nbsp;these&nbsp;

Which&nbsp;of&nbsp;the&nbsp;following&nbsp;nucleotide&nbsp;sequences&nbsp;contains&nbsp;four&nbsp;pyrimidine&nbsp;bases?&nbsp;

Which&nbsp;purine&nbsp;base&nbsp;is&nbsp;found&nbsp;in&nbsp;RNA?&nbsp;

&nbsp;In&nbsp;RNA,&nbsp;thymine&nbsp;is&nbsp;replaced&nbsp;by&nbsp;

Amino&nbsp;acids&nbsp;are&nbsp;produced&nbsp;from

&nbsp;In&nbsp;which&nbsp;of&nbsp;the&nbsp;following&nbsp;groups&nbsp;are&nbsp;all&nbsp;polysaccharides?&nbsp;

Which&nbsp;of&nbsp;the&nbsp;following&nbsp;have&nbsp;carbohydrate&nbsp;as&nbsp;prosthetic&nbsp;group&nbsp;

&nbsp;ATP&nbsp;is&nbsp;

Lipids&nbsp;are&nbsp;insoluble&nbsp;in&nbsp;water&nbsp;because&nbsp;lipid&nbsp;molecules&nbsp;are&nbsp;

&nbsp;The&nbsp;major&nbsp;role&nbsp;of&nbsp;minor&nbsp;elements&nbsp;inside&nbsp;living&nbsp;organisms&nbsp;is&nbsp;to&nbsp;act&nbsp;as

Nucleotides&nbsp;are&nbsp;building&nbsp;blocks&nbsp;of&nbsp;nucleic&nbsp;acids.&nbsp;Each&nbsp;nucleotide&nbsp;is&nbsp;a&nbsp;composite&nbsp;molecule&nbsp;formed&nbsp;by

&nbsp;Living&nbsp;cell&nbsp;contains&nbsp;60-95%&nbsp;water.&nbsp;Water&nbsp;present&nbsp;in&nbsp;human&nbsp;body&nbsp;is&nbsp;

The&nbsp;&ldquo;Repeating&nbsp;Unit&rdquo;&nbsp;of&nbsp;glycogen&nbsp;is

Fluidity&nbsp;of&nbsp;bio-membranes&nbsp;can&nbsp;be&nbsp;shown&nbsp;by

Enzymes&nbsp;that&nbsp;catalyse&nbsp;inter-conversion&nbsp;of&nbsp;optical,&nbsp;geometrical&nbsp;or&nbsp;positional&nbsp;isomers&nbsp;are

&nbsp; Which&nbsp;is&nbsp;an&nbsp;organic&nbsp;compound&nbsp;found&nbsp;in&nbsp;most&nbsp;cells?

The&nbsp;effectiveness&nbsp;of&nbsp;an&nbsp;enzyme&nbsp;is&nbsp;affected&nbsp;least&nbsp;by

Which&nbsp;one&nbsp;is&nbsp;diaminodicarboxylic&nbsp;amino&nbsp;acid?

Chitin&nbsp;is&nbsp;a

Which&nbsp;of&nbsp;the&nbsp;following&nbsp;is&nbsp;not&nbsp;a&nbsp;conjugated&nbsp;protein?

Feedback&nbsp;inhibition&nbsp;of&nbsp;enzymes&nbsp;is&nbsp;affected&nbsp;by&nbsp;which&nbsp;of&nbsp;the&nbsp;following

With&nbsp;reference&nbsp;to&nbsp;enzymes,&nbsp;which&nbsp;one&nbsp;of&nbsp;the&nbsp;following&nbsp;statements&nbsp;is&nbsp;true?

One&nbsp;strand&nbsp;of&nbsp;DNA&nbsp;has&nbsp;the&nbsp;following&nbsp;sequence&nbsp;of&nbsp;nucleotide&nbsp;3&rsquo;&nbsp;ATTCGCTAT&nbsp;5&rsquo;&nbsp;so&nbsp;the&nbsp;other&nbsp;strand&nbsp;of&nbsp;DNA&nbsp;has

The&nbsp;&lsquo;&lsquo;lock&nbsp;and&nbsp;key&rsquo;&rsquo;&nbsp;model&nbsp;of&nbsp;enzyme&nbsp;action&nbsp;illustrates&nbsp;that&nbsp;a&nbsp;particular&nbsp;enzyme&nbsp;molecule

Discriminant of 2x² + 5x - 1 is

An equation which contains square of unknown variable quantity, but no higher power is called

If b² - 4ac >0, then roots of ax² + bx + c = 0 are

Solution set of equation x² - 4 = 0 is

If b² - 4ac >0, and not a perfect square then roots of ax² + bx + c = 0 are

Number of methods to solve a quadratic equation are

If b² - 4ac = 0, then roots of ax² + bx + c = 0 are

Number of terms in a standard quadratic equation ax² + bx + c = 0 is

If b² - 4ac < 0, then roots of ax² + bx + c = 0 are

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these

Which of the following nucleotide sequences contains four pyrimidine bases?

Which purine base is found in RNA?

In RNA, thymine is replaced by

Amino acids are produced from

In which of the following groups are all polysaccharides?

Which of the following have carbohydrate as prosthetic group

ATP is

Lipids are insoluble in water because lipid molecules are

The major role of minor elements inside living organisms is to act as

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by

Living cell contains 60-95% water. Water present in human body is

The “Repeating Unit” of glycogen is

Fluidity of bio-membranes can be shown by

Enzymes that catalyse inter-conversion of optical, geometrical or positional isomers are

Which is an organic compound found in most cells?

The effectiveness of an enzyme is affected least by

Which one is diaminodicarboxylic amino acid?

Chitin is a

Which of the following is not a conjugated protein?

Feedback inhibition of enzymes is affected by which of the following

With reference to enzymes, which one of the following statements is true?

One strand of DNA has the following sequence of nucleotide 3’ ATTCGCTAT 5’ so the other strand of DNA has

The ‘‘lock and key’’ model of enzyme action illustrates that a particular enzyme molecule