

MCQOPTIONS
This section includes 33 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.
1. |
Discriminant of 2x² + 5x - 1 is |
A. | 25 |
B. | 30 |
C. | 33 |
D. | 35 |
Answer» D. 35 | |
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 | |
3. |
If b² - 4ac >0, then roots of ax² + bx + c = 0 are |
A. | irrational |
B. | real |
C. | equal |
D. | rational |
Answer» C. equal | |
4. |
Solution set of equation x² - 4 = 0 is |
A. | {±4} |
B. | {4} |
C. | {±2} |
D. | {2} |
Answer» D. {2} | |
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. | |
6. |
Number of methods to solve a quadratic equation are |
A. | 2 |
B. | 3 |
C. | 4 |
D. | 5 |
Answer» C. 4 | |
7. |
If b² - 4ac = 0, then roots of ax² + bx + c = 0 are |
A. | equal |
B. | imaginary |
C. | irrational |
D. | rational |
Answer» B. imaginary | |
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 | |
9. |
If b² - 4ac < 0, then roots of ax² + bx + c = 0 are |
A. | equal |
B. | irrational |
C. | rational |
D. | imaginary |
Answer» E. | |
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 | |
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 | |
12. |
Which purine base is found in RNA? |
A. | Thymine |
B. | Uracil |
C. | Cytosine |
D. | Guanine |
Answer» E. | |
13. |
In RNA, thymine is replaced by |
A. | adenine |
B. | guanine |
C. | cytosine |
D. | uracil |
Answer» E. | |
14. |
Amino acids are produced from |
A. | Proteins |
B. | Fatty acids |
C. | Essential oils |
D. | α-keto acids |
Answer» B. Fatty acids | |
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. | |
16. |
Which of the following have carbohydrate as prosthetic group |
A. | Glycoprotein |
B. | Lipoprotein |
C. | Nucleoprotein |
D. | Chromoprotein |
Answer» B. Lipoprotein | |
17. |
ATP is |
A. | vitamin |
B. | Enzyme |
C. | Nucleic acid |
D. | Nucleotide |
Answer» E. | |
18. |
Lipids are insoluble in water because lipid molecules are |
A. | Hydrophilic |
B. | Neutral |
C. | Zwitter ions |
D. | Hydrophobic |
Answer» E. | |
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 | |
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 | |
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% | |
22. |
The “Repeating Unit” of glycogen is |
A. | Fructose |
B. | Mannose |
C. | Glucose |
D. | Galactose |
Answer» D. Galactose | |
23. |
Fluidity of bio-membranes can be shown by |
A. | Electron microscope |
B. | Tissue culture |
C. | Phase-contrast microscope |
D. | Fluorescence microscope |
Answer» E. | |
24. |
Enzymes that catalyse inter-conversion of optical, geometrical or positional isomers are |
A. | Ligases |
B. | Lyases |
C. | Hydrolases |
D. | Isomerases |
Answer» E. | |
25. |
Which is an organic compound found in most cells? |
A. | Glucose |
B. | Water |
C. | Sodium chloride |
D. | Oxygen |
Answer» B. Water | |
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 | |
27. |
Which one is diaminodicarboxylic amino acid? |
A. | Cystine |
B. | Lysine |
C. | Cysteine |
D. | Aspartic Acid |
Answer» B. Lysine | |
28. |
Chitin is a |
A. | Polysaccharide |
B. | Nitrogenous polysaccharide |
C. | Lipoprotein |
D. | Protein |
Answer» C. Lipoprotein | |
29. |
Which of the following is not a conjugated protein? |
A. | Peptone |
B. | Phosphoprotein |
C. | Lipoprotein |
D. | Chromoprotein |
Answer» B. Phosphoprotein | |
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 | |
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 | |
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’ | |
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 | |