Revision of All Topics Covered in SS1 Biology First Term Lesson Notes Week 11

Revision of All Topics Covered in SS1 Biology

Instructions:

• Read each part carefully and answer the questions as directed.
• Aim for clarity and simplicity in your answers.
• Review your responses before submission.

Part A: Review and Revision (20 FAQs with Answers)

1. What is a cell?
   A cell is the smallest unit of life that can perform all life processes.
2. What are the two main types of reproduction?
   Asexual reproduction (one parent) and sexual reproduction (two parents).
3. What is photosynthesis?
   Photosynthesis is the process by which green plants use sunlight to make food.
4. What are gametes?
   Gametes are reproductive cells (sperm and egg) that fuse during fertilization.
5. What is cellular respiration?
   Cellular respiration is the process by which cells convert glucose into energy.
6. What is diffusion?
   Diffusion is the movement of substances from an area of higher concentration to an area of lower concentration.
7. What is osmosis?
   Osmosis is the movement of water across a selectively permeable membrane.
8. What is the role of enzymes in the cell?
   Enzymes speed up chemical reactions in the body.
9. What is the difference between autotrophs and heterotrophs?
   Autotrophs make their own food, while heterotrophs obtain food from other organisms.
10. What is excretion?
    Excretion is the process of removing waste products from the body.
11. What are the two types of cellular respiration?
    Aerobic (with oxygen) and anaerobic (without oxygen) respiration.
12. What is the function of the zygote?
    The zygote develops into a new organism after fertilization.
13. What is mitosis?
    Mitosis is the process by which a cell divides to create two identical cells.
14. What is the significance of genetic diversity?
    Genetic diversity helps populations adapt to changes in the environment.
15. What is the process of conjugation?
    Conjugation is a method of genetic exchange between bacteria.
16. What are micronutrients?
    Micronutrients are nutrients needed in small amounts, like vitamins and minerals.
17. What are macronutrients?
    Macronutrients are nutrients needed in larger amounts, such as carbohydrates, proteins, and fats.
18. What is the significance of the Krebs cycle?
    The Krebs cycle is crucial for producing energy during aerobic respiration.
19. How do plants reproduce asexually?
    Plants can reproduce asexually through methods like budding or vegetative propagation.
20. What are the types of movements in cells?
    Cyclosis (internal movement) and growth movements regulated by hormones (like auxins).

Part B: Objective Questions (20 Fill-in-the-Blank Questions with Options a, b, c, or d)

1. The smallest unit of life is called a __________.
   a) Organ
   b) Tissue
   c) Cell
   d) Organism
2. __________ is the process by which plants make their own food.
   a) Photosynthesis
   b) Respiration
   c) Digestion
   d) Excretion
3. In __________ reproduction, only one parent is needed.
   a) Sexual
   b) Asexual
   c) Binary
   d) Cross
4. The __________ cycle is part of aerobic respiration.
   a) Krebs
   b) Calvin
   c) Glycolysis
   d) Electron
5. Osmosis involves the movement of __________ through a membrane.
   a) Sugar
   b) Water
   c) Oxygen
   d) Salt
6. The main energy currency of cells is __________.
   a) DNA
   b) RNA
   c) ATP
   d) Glucose
7. __________ is a process that helps cells get rid of waste.
   a) Digestion
   b) Excretion
   c) Absorption
   d) Respiration
8. The fusion of male and female gametes results in a __________.
   a) Zygote
   b) Gamete
   c) Cell
   d) Bud
9. Plants that can make their own food are called __________.
   a) Heterotrophs
   b) Autotrophs
   c) Decomposers
   d) Consumers
10. __________ is when bacteria exchange genetic material.
    a) Budding
    b) Mitosis
    c) Conjugation
    d) Fission
11. The __________ produces energy in aerobic respiration.
    a) Chloroplast
    b) Mitochondria
    c) Nucleus
    d) Ribosome
12. __________ respiration occurs without oxygen.
    a) Aerobic
    b) Anaerobic
    c) Photosynthetic
    d) Cellular
13. A __________ is an organism that cannot produce its own food.
    a) Producer
    b) Consumer
    c) Decomposer
    d) Autotroph
14. __________ is a nutrient needed in large amounts.
    a) Vitamin
    b) Protein
    c) Mineral
    d) Fiber
15. The basic unit of inheritance is called a __________.
    a) Chromosome
    b) Gene
    c) Cell
    d) Nucleus
16. __________ is the movement of substances from high to low concentration.
    a) Active transport
    b) Diffusion
    c) Osmosis
    d) Filtration
17. The __________ is a type of excretion in plants.
    a) Stomata
    b) Roots
    c) Leaves
    d) Flowers
18. __________ helps in the breakdown of food in cells.
    a) Water
    b) Enzymes
    c) Minerals
    d) Sugars
19. The basic structure of proteins is made of __________.
    a) Amino acids
    b) Fatty acids
    c) Nucleotides
    d) Simple sugars
20. The term __________ refers to the removal of waste from an organism.
    a) Nutrition
    b) Excretion
    c) Digestion
    d) Respiration

Part C: Theory Questions (20 Simple Short Answer Questions)

1. Define a cell and its function in living organisms.
2. What is the difference between asexual and sexual reproduction?
3. Describe the process of photosynthesis.
4. Explain what enzymes do in the body.
5. What is the function of gametes in reproduction?
6. How does osmosis differ from diffusion?
7. What are the two types of cellular respiration?
8. Why is excretion important for living things?
9. Explain how plants can reproduce without seeds.
10. Describe what happens during mitosis.
11. What is the role of the Krebs cycle in cellular respiration?
12. How do autotrophs obtain energy?
13. What is the difference between macronutrients and micronutrients?
14. Explain the process of conjugation in bacteria.
15. What are the waste products of cellular respiration?
16. How do hormones regulate growth in plants?
17. Describe how environmental factors can affect cell function.
18. What is the significance of genetic diversity in populations?
19. Explain the term “homeostasis” in relation to cells.
20. How do cells respond to changes in their environment?

Part D: True or False Questions (20 Questions)

1. A cell is the basic unit of life. (True/False)
2. All organisms reproduce asexually. (True/False)
3. Photosynthesis requires sunlight. (True/False)
4. Enzymes slow down chemical reactions. (True/False)
5. Heterotrophs make their own food. (True/False)
6. Mitosis results in two identical cells. (True/False)
7. The Krebs cycle occurs in the mitochondria. (True/False)
8. Diffusion is the movement of water only. (True/False)
9. A zygote is formed after fertilization. (True/False)
10. Plants can reproduce through runners and tubers. (True/False)
11. Anaerobic respiration occurs with oxygen. (True/False)
12. The main role of gametes is to store energy. (True/False)
13. Genetic diversity is important for adaptation. (True/False)
14. Waste products are stored indefinitely in cells. (True/False)
15. Cyclosis refers to movement within a cell. (True/False)
16. Micronutrients are needed in large amounts. (True/False)
17. Plants do not perform cellular respiration. (True/False)
18. Excretion is essential for maintaining homeostasis. (True/False)
19. Conjugation is a method of asexual reproduction. (True/False)
20. All living organisms are autotrophs. (True/False)

Part E: Fill in the Gaps Questions (20 Questions without Options)

1. The smallest unit of life is called a __________.
2. __________ is the process of making food in plants.
3. The __________ is where energy is produced in cells.
4. __________ reproduction involves two parents.
5. Water moves across membranes through a process called __________.
6. __________ are cells that carry genetic information for reproduction.
7. The removal of waste from the body is known as __________.
8. __________ respiration uses oxygen to produce energy.
9. __________ are nutrients needed in small amounts.
10. The __________ cycle helps in energy production during respiration.
11. A __________ is formed when a sperm fertilizes an egg.
12. Plants can reproduce asexually through __________ and cuttings.
13. __________ is the process of breaking down food in cells.
14. The basic unit of heredity is called a __________.
15. __________ are organisms that cannot make their own food.
16. The __________ is an example of anaerobic respiration.
17. Genetic __________ allows populations to adapt to their environment.
18. The __________ contains the instructions for cell functions.
19. The __________ helps in transporting nutrients in the body.
20. __________ are the building blocks of proteins.

Conclusion:

Make sure to review all parts of the assessment thoroughly. Answer clearly and concisely. Good luck with your revision!