1. Which element is more abundant in the human body compared to the earth's crust?
- A) Silicon
- B) Oxygen
- C) Carbon
- D) Calcium
Answer: C) Carbon
2. What are biomolecules?
- A) Organic compounds only found in plants
- B) Carbon compounds derived from living tissues
- C) Inorganic compounds like salts and metals
- D) Molecules formed from abiotic components
Answer: B) Carbon compounds derived from living tissues
3. What is the function of phospholipids in living organisms?
- A) Act as a primary energy source
- B) Form structural components of cell membranes
- C) Serve as genetic material
- D) Aid in the storage of calcium ions
Answer: B) Form structural components of cell membranes
4. Which of the following is a polymeric polysaccharide found in plants?
- A) Glucose
- B) Glycogen
- C) Cellulose
- D) Ribose
Answer: C) Cellulose
5. Which protein is the most abundant in the animal world?
- A) Trypsin
- B) Collagen
- C) RuBisCO
- D) Insulin
Answer: B) Collagen
6. What is the primary structural level of a protein?
- A) The helical folding of the polypeptide chain
- B) The sequence of amino acids in the protein
- C) The three-dimensional arrangement of protein
- D) The arrangement of multiple polypeptide chains
Answer: B) The sequence of amino acids in the protein
7. What is the role of enzymes in biochemical reactions?
- A) Increase the activation energy required
- B) Reduce the activation energy and speed up reactions
- C) Serve as reactants in metabolic pathways
- D) Replace substrate molecules in reactions
Answer: B) Reduce the activation energy and speed up reactions
8. Which of the following is an example of a secondary metabolite?
- A) Glucose
- B) Rubber
- C) Glycine
- D) Starch
Answer: B) Rubber
9. What happens to an enzyme at very high temperatures?
- A) Its activity increases indefinitely
- B) It gets denatured
- C) It remains unchanged
- D) It doubles its reaction rate
Answer: B) It gets denatured
10. What is the zwitterionic form of an amino acid?
- A) A non-ionic state
- B) A state with both positive and negative charges on the molecule
- C) The charged state only at acidic pH
- D) The neutral state at alkaline pH
Answer: B) A state with both positive and negative charges on the molecule
11. Which of the following is NOT a primary metabolite?
- A) Amino acids
- B) Glucose
- C) Antibiotics
- D) Nucleotides
Answer: C) Antibiotics
12. What is the main characteristic of macromolecules found in the acid-insoluble fraction of a living tissue?
- A) Low molecular weight
- B) High molecular weight
- C) Composed solely of lipids
- D) Found only in non-living matter
Answer: B) High molecular weight
13. What is the primary composition of the acid-insoluble fraction in living organisms?
- A) Water
- B) Nucleic acids, proteins, polysaccharides, and lipids
- C) Vitamins and minerals
- D) Inorganic salts
Answer: B) Nucleic acids, proteins, polysaccharides, and lipids
14. What type of fatty acid has no double bonds in its structure?
- A) Saturated fatty acid
- B) Unsaturated fatty acid
- C) Polyunsaturated fatty acid
- D) Monounsaturated fatty acid
Answer: A) Saturated fatty acid
15. Which of the following are nitrogen bases found in nucleotides?
- A) Cytosine, Ribose, Adenine
- B) Guanine, Uracil, Thymine
- C) Glucose, Guanine, Cytosine
- D) Adenine, Phosphate, Thymine
Answer: B) Guanine, Uracil, Thymine
16. What is the role of RuBisCO in the biosphere?
- A) Acts as a structural protein
- B) Functions as a storage protein
- C) Catalyzes the fixation of carbon dioxide in photosynthesis
- D) Transports nutrients in cells
Answer: C) Catalyzes the fixation of carbon dioxide in photosynthesis
17. What are proteins composed of?
- A) Fatty acids and glycerol
- B) Polymers of nucleotides
- C) Polymers of amino acids linked by peptide bonds
- D) Chains of monosaccharides
Answer: C) Polymers of amino acids linked by peptide bonds
18. Which of the following best describes competitive inhibition in enzyme activity?
- A) An inhibitor binds to the enzyme's active site, blocking the substrate
- B) The substrate changes the shape of the enzyme permanently
- C) The enzyme loses its active site
- D) A cofactor enhances enzyme activity
Answer: A) An inhibitor binds to the enzyme's active site, blocking the substrate
19. What is the role of glycogen in animals?
- A) It forms the cell wall structure
- B) It stores energy
- C) It acts as a transport protein
- D) It catalyzes metabolic reactions
Answer: B) It stores energy
20. What is the role of lecithin in cell membranes?
- A) It provides energy storage
- B) It functions as a hormone
- C) It acts as a phospholipid for membrane structure
- D) It serves as a catalyst for metabolic reactions
Answer: C) It acts as a phospholipid for membrane structure
"Prepare for NEET and JEE with comprehensive MCQs in Biology tailored for HS 1st Year students. Boost your concepts with topic-wise practice and expert solutions."
Content Outline
1. Introduction
- Overview of MCQs in Biology for HS 1st Year.
- Importance for NEET and JEE aspirants.
- Benefits of practicing biology MCQs.
2. Key Features
- Syllabus Coverage: Designed for NEET & JEE (Class 11 topics).
- Question Bank: Topic-wise biology MCQs with difficulty levels.
- Detailed Solutions: Step-by-step explanations.
3. Why MCQs are Crucial for NEET/JEE?
- Enhances problem-solving skills.
- Builds speed and accuracy.
- Familiarizes with exam patterns.
4. Biology Topics Covered
- Diversity of Living Organisms
- Cell Structure and Function
- Plant Physiology
- Human Physiology
- Biomolecules, and more.
5. Tips to Master MCQs in Biology
- Understand concepts deeply.
- Practice regularly with time limits.
- Analyze mistakes and revisit weak areas.
6. Download Free Resources/Practice MCQs
- Link to a downloadable PDF or online practice quiz for better engagement.
SEO Best Practices
Keywords:
Include terms like "Biology MCQs for Class 11," "NEET biology questions," "JEE preparation MCQs," and "High school biology question bank."
Place them naturally in headings, subheadings, and the body text.Internal and External Links:
- Internal links to related study materials or other preparation guides.
- External links to credible sources like NCERT or official NEET/JEE portals.
Alt Text for Images:
Use descriptive text, e.g., "Diagram of human physiology for NEET biology MCQs."Mobile-Friendly Design:
Ensure the content is easy to read on mobile devices.Call to Action (CTA):
Encourage actions like "Start Practicing Now," "Download Free MCQs," or "Sign Up for NEET/JEE Tips."
No comments:
Post a Comment