Biology is a crucial subject for students preparing for school exams and competitive tests in India. Understanding biological concepts not only helps in grasping the fundamentals of life sciences but also enhances your ability to tackle objective questions effectively. Practicing MCQs and objective questions in Biology is essential for scoring better, as it allows you to apply your knowledge and identify important questions that frequently appear in exams.
What You Will Practise Here
Cell Structure and Function
Genetics and Heredity
Human Anatomy and Physiology
Plant Biology and Ecology
Microbiology and Biotechnology
Evolution and Biodiversity
Important definitions and key formulas
Exam Relevance
Biology is a significant part of the curriculum for CBSE, State Boards, NEET, and JEE. In these exams, you can expect a variety of question patterns, including multiple-choice questions that test your understanding of key concepts, definitions, and applications of biological theories. Familiarity with important Biology MCQ questions will give you an edge in both school assessments and competitive exams.
Common Mistakes Students Make
Confusing similar terms, such as mitosis and meiosis.
Overlooking the importance of diagrams in understanding processes.
Misinterpreting questions that require application of concepts rather than rote memorization.
Neglecting to review key definitions and their implications.
FAQs
Question: What are the best ways to prepare for Biology MCQs? Answer: Regular practice with objective questions, reviewing key concepts, and understanding diagrams are effective strategies.
Question: How can I improve my accuracy in answering Biology objective questions? Answer: Focus on understanding concepts rather than memorizing facts, and practice with past exam papers to familiarize yourself with question patterns.
Start solving practice MCQs today to test your understanding and boost your confidence in Biology. Remember, consistent practice is the key to mastering this subject and achieving your exam goals!
Q. A balanced diet consists of 50% carbohydrates, 30% proteins, and 20% fats. If a person consumes 2400 calories, how many calories are from carbohydrates?
Q. A certain disease has a 10% chance of being transmitted from an infected person to a healthy person. If there are 50 infected individuals, what is the expected number of transmissions if each interacts with one healthy person? (2023)
Q. A certain disease has a basic reproduction number (R0) of 2. If one infected person enters a population, how many people could potentially be infected after 3 generations? (2020)
Q. A certain disease has a basic reproduction number (R0) of 3. If one infected person enters a population of 1000, how many people could potentially be infected after one generation? (2021)
A.
300
B.
600
C.
900
D.
1200
Solution
If R0 = 3, then 1 infected person can infect 3 others. Therefore, potential infections = 3 * 1 = 3 people.
Q. A diet consists of 60% carbohydrates, 25% proteins, and 15% fats. If the total caloric intake is 2000 calories, how many calories come from fats? (2020)
A.
300
B.
400
C.
500
D.
600
Solution
Calories from fats = 15% of 2000 = 0.15 * 2000 = 300 calories.
Q. A food item contains 10 grams of carbohydrates, 5 grams of protein, and 2 grams of fat. How many total calories does this food item provide? (Carbohydrates = 4 cal/g, Protein = 4 cal/g, Fat = 9 cal/g) (2022)
Q. A meal contains 15 grams of fat, 30 grams of carbohydrates, and 10 grams of protein. How many total calories does this meal provide? (Fat = 9 cal/g, Carbohydrates = 4 cal/g, Protein = 4 cal/g) (2021)
Q. A nutrition label states that a serving contains 15% of the daily value of fiber based on a 2000 calorie diet. How many grams of fiber does this represent if the daily value is 25 grams? (2021)
A.
2 grams
B.
3 grams
C.
4 grams
D.
5 grams
Solution
15% of 25 grams = 0.15 * 25 = 3.75 grams, rounded to 4 grams.
Q. A nutrition label states that a serving contains 200 mg of sodium. If a person consumes 3 servings, how much sodium do they consume in total? (2022)
Q. A person is on a diet that consists of 50% carbohydrates, 30% fats, and 20% proteins. If they consume 1800 calories, how many calories are from carbohydrates?
A.
600 calories
B.
700 calories
C.
800 calories
D.
900 calories
Solution
50% of 1800 calories = 0.50 * 1800 = 900 calories from carbohydrates.
Q. A person needs 2000 calories a day and wants to get 15% of their calories from fats. How many grams of fat should they consume (1 gram of fat = 9 calories)? (2000)
A.
33 grams
B.
40 grams
C.
50 grams
D.
60 grams
Solution
15% of 2000 calories = 0.15 * 2000 = 300 calories from fats. 300 calories / 9 calories per gram = 33.33 grams, rounded to 33 grams.
