Advance Biology Grade 9 - Enzymes Quiz

Advance Biology Grade 9 - End of Term 1 (2024-2025)

• Enzymes: Enzymes are biological catalysts that speed up biochemical reactions in living organisms.

• Enzymes function by interacting with substrates at specific active sites.

• Only substrates with a specific shape can bind to the active site.

• Once substrates bind, the active site changes shape, forming an enzyme-substrate complex.

• Substrates react to form products within the complex.

• Products are released, and the enzyme is unchanged.

• Enzymes are crucial for all biological processes.

• Quiz Questions and Answers:

  • Question 1: Identify 'A' in the diagram. (Image included)

  • Answer: Enzyme-substrate complex

  • Question 2: Identify 'B' in the diagram. (Image included)

  • Answer: Enzyme-substrate complex

  • Question 3: Identify 'E' in the diagram. (Image included)

  • Answer: Enzyme

  • Question 4: Identify 'C' in the diagram. (Image included)

  • Answer: Product

  • Question 5: What phenomenon is seen in the diagram of capillary action and cups? (Image included)

  • Answer: Adhesion

  • Question 6: What phenomenon is seen in the image of a water strider and dew on grass? (Image included)

  • Answer: Cohesion

  • Question 7: What phenomenon causes capillary action? (Image included)

  • Answer: Adhesion

  • Question 8: Define cohesion. (Image included)

  • Answer: Water attracts water.

  • Question 9: What are substances that release more H+ ions called?

  • Answer: Strong acids

  • Question 10: What are substances that release more OH- ions called?

  • Answer: Strong bases

  • Question 11: What are substances that release H+ ions called?

  • Answer: Acids

  • Question 12: What type of juices are released in the stomach?

  • Answer: Strong acid

  • Question 13: Which of the following matches the function of carbohydrates and lipids?

  • Answer: Store energy

  • Question 14: What function is related to controlling cell growth?

  • Answer: Proteins

  • Question 15: Which of the following is NOT a function of proteins?

  • Answer: Store energy

  • Question 16: What property relates to storing genetic information?

  • Answer: Nucleic acid

  • Question 17: Which macromolecule matches its correct role in the cell?

  • Answer: Nucleic acid - Transport substances/ Lipids - Store genetic information/ Proteins - Speed reactions / Carbohydrates - Make hormones

  • Question 18: Which of the following is NOT related to cell theory?

  • Answer: All cells have a nucleus in their cytoplasm

  • Question 19: Which of the following is one of the principles of cell theory?

  • Answer: All living things are made from one or more cells

  • Question 20: Which of the following isn't a component of a phospholipid?

  • Answer: Nucleotide

  • Question 21: Function of cholesterol?

  • Answer: Maintain fluidity and homeostasis.

  • Question 22: Which structure in the plasma membrane helps in identifying chemical signals?

  • Answer: Carbohydrates

  • Question 23: Which structure helps in transporting substances inside or outside the cell?

  • Answer: Transport proteins

  • Question 24: Which orientation best represents the phospholipid bilayer of the plasma membrane? (Image included)

  • Answer: Option B showing the phospholipid tails as the internal layer between the polar heads.

  • Question 25: Identify the function of A in the diagram. (Image included)

  • Answer: Identify chemical signals

  • Question 26: Identify D in the diagram (Image included)

  • Answer: Phospholipid bilayer

  • Question 27: Identify F in the diagram (Image included)

  • Answer: Nonpolar tail

  • Question 28: Identify E in the diagram (Image included)

  • Answer: Transport protein

  • Question 29: The process by which a cell releases content outside is called:

  • Answer: Exocytosis

  • Question 30: The process by which a substance enters the cell is called:

  • Answer: Endocytosis

  • Question 31: Identify the type of movement in the diagram (Image included)

  • Answer: Endocytosis

  • Question 32: Identify the type of movement in the diagram (Image included)

  • Answer: Endocytosis

  • Question 33: Which solution allows cells to retain their shape?

  • Answer: Isotonic solution

  • Question 34: What is the type of solution in diagram? (Image Included)

  • Answer: Hypotonic solution

  • Question 35: How could you prevent cells from bursting in an extremely hypotonic solution?

  • Answer: Increase solute concentration outside the cell

  • Question 36: What happens to animal cells in a hypertonic solution?

  • Answer: They shrivel

  • Question 37: Identify organelle in the diagram (Image included)

  • Answer: Lysosome

  • Question 38: What does a lysosome contain?

  • Answer: Enzymes for cell protection

  • Question 39: Which organism does not have a nucleus?

  • Answer: Bacteria

  • Question 40: Which organism doesn't have a cell wall?

  • Answer: Animals

  • Question 41: Where is DNA found in prokaryotes?

  • Answer: Cytoplasm

  • Question 42: Which structure shows wipe-like motion in organisms?

  • Answer: Flagella

  • Question 43: Identify the organism in the diagram (Image included)

  • Answer: Bacteria

  • Question 44: Identify 'D' in the diagram (Image included)

  • Answer: Flagella

  • Question 45: Identify the organism in the diagram (Image included).

  • Answer: Plant cell

  • Question 46: Identify 'A' in the diagram (Image included)

  • Answer: Large vacuole

  • Question 47: Identify 'E' in the diagram (Image included)

  • Answer: Palisade mesophyll cell

  • Question 48: Identify 'F' in the diagram (Image included)

  • Answer: Cuticle

  • Question 49: Which region of the leaf has more stomata?

  • Answer: Lower epidermal cells

  • Question 50: Which structure aids in gas exchange in leaves?

  • Answer: Stomata

  • Question 51: Which leaf structure is the site of most photosynthesis? (Image included)

  • Answer: Region 1

  • Question 52: Identify the type of plant root (Image included)

  • Answer: Tap root

  • Question 53: Which characteristic(s) describe a taproot system?

  • Answer: Thick main root, few lateral branches, store food

  • Question 54: Identify the type of movement in plant (Image included).

  • Answer: Gravitropism

  • Question 55: Identify the type of movement in plant (Image included)

  • Answer: Thigmotropism

  • Question 56: The process by which a plant moves mechanically is called

  • Answer: Thigmotropism

  • Question 57: The process by which a plant moves in response to light is called?

  • Answer: Phototropism

  • Question 58: Identify the picture for this root (Image included)

  • Answer: Tap root

  • Question 59: What is the function of this modified root (Image included)

  • Answer: Supply oxygen

  • Question 60: Identify Characteristics of this root type (Image included)

  • Answer: All the above (absorbs water and minerals, anchorage, fibrous root system)

  • Question 61: Identify the common feature of tuber, corm, and bulb stems

  • Answer: Store food

  • Question 62: Identify the stem type in the picture (Image included)

  • Answer: Bulb

  • Question 63: Identify the stem type (Image included).

  • Answer: Corm

  • Question 64: What is white potato an example of

  • Answer: Tuber

  • Question 65: Identify 'A' in the diagram (Image included).

  • Answer: Epidermis

  • Question 66: Identify 'C' in the diagram (Image included)

  • Answer: Subcutaneous layer

  • Question 67: Identify 'B' in the diagram (Image included)

  • Answer: Muscle

  • Question 68: Identify 'D' in the diagram (Image included)

  • Answer: Dermis

  • Question 69: Identify 'B' in the diagram (Image included).

  • Answer: Femur

  • Question 70: Identify 'G' in the diagram (Image included).

  • Answer: Ribs

  • Question 71: Identify 'F' in the diagram (Image included).

  • Answer: Appendicular skeleton

  • Question 72: Identify 'D' in the diagram (Image included).

  • Answer: Vertebral column

  • Question 73: Identify the structure and location of this muscle (Image included).

  • Answer: Cardiac muscle in the heart

  • Question 74: Identify the structure of this muscle (Image Included).

  • Answer: Smooth muscle

  • Question 75: Identify the structure and location of this muscle (Image Included).

  • Answer: Skeletal muscle in the skeletal system

  • Question 76: What is the functional unit that contracts a skeletal muscle?

  • Answer: Sarcomere

  • Question 77: What part of the muscle contracts?

  • Answer: Sarcomere

  • Question 78: What protein filaments make up myofibrils?

  • Answer: Actin and myosin

  • Question 79: Where is the location of the Z line shown in the diagram? (Image included)

  • Answer: B

Test your knowledge on enzymes with this end-of-term quiz for Grade 9 Advanced Biology. Dive into topics such as the enzyme-substrate complex and the role of enzymes as biological catalysts in biochemical reactions. Perfect for reviewing key concepts before exams.