QUESTION ONE
1.1 Answer the following multiple-choice questions by choosing the most
appropriate answer. Write down only the letter of your choice. Example 1.1.11
A
1.1.1 Element found in all organic compounds:
A Sodium.
B Nitrogen.
C Carbon.
D Calcium.
1.1.2 Which statement best describes phloem tissue?
A It carries water from the roots to the leaves.
B It transports manufactured food from leaves to other parts.
C It provides mechanical support.
D It absorbs water from the soil.
1.1.3 If a plant is deprived of water, which would most likely occur first?
A Root hairs die.
B Transpiration rate increases.
C Stomata close to prevent further water loss.
D More xylem vessels form.
1.1.4 Organelle that controls all cellular activities:
A Nucleus
B Cytoplasm
C Cell membrane
D Vacuole
1.1.5 A cell undergoing mitosis has a mutation that results in cytokinesis not
taking place. This will result in…
A one cell with half the number of chromosomes.
B one cell that cannot undergo mitosis again.
C two normal daughter cells.
D one cell with two nuclei.
1
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,1.1.6 A learner accidentally adds an enzyme to a test tube at 100°C. What
will most likely happen?
A Reaction rate increases
B Reaction rate stays the same
C Enzyme denatures and stops working
D Enzyme works faster
1.1.7 Meristematic tissue found in plants:
A Cambium
B Xylem
C Phloem
D Parenchyma
1.1.8 When a plant is placed in a solution with a higher water potential than
its cells, the cells will…
A lose water and become flaccid.
B gain water and become turgid.
C shrink.
D collapse completely.
1.1.9 Organelle responsible for packaging and secreting cellular products.
A Ribosome
B Golgi apparatus
C Lysosome
D Vacuole
1.1.10 A biology student is using a compound microscope to observe a
microscopic organism. The eyepiece of the microscope has a
magnification of 20x, and the objective lens being used has a
magnification of 40x. The student draws a detailed diagram of a cell they
observed. Later, they measure the cell's size in their drawing and find it
to be 20 millimeters (mm) in length. What is the actual size of the cell in
micrometers (μm)?
A 0,025
B 0,25
C 2,5
D 25
(10 x 2) (20)
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, 1.2 Give the correct biological term for each of the following descriptions. Write
only the term next to the question number (1.2.1 to 1.2.9) in your ANSWER
BOOK.
1.2.1 Organic compound that stores hereditary characteristics in the cell.
1.2.2 Tissue that connects muscles to bones.
1.2.3 Longest phase in the cell cycle during which growth occurs.
1.2.4 Force that moves water up from roots to leaves in tall trees.
1.2.5 Indicator used to test the presence of starch.
1.2.6 Tissue that found on the surface of the skin and lining the mouth,
oesophagus, vagina, alveoli of lungs, and blood vessels.
1.2.7 Part of the skeleton that protects the brain.
1.2.8 Movement of water from a high water potential, across a selectively
permeable membrane to a low water potential until dynamic equilibrium
is reached.
1.2.9 Mineral salt which plays a role in the transmission of nerve impulses in
animals.
(9 x 1) (9)
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