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WorksheetsCELL MODIFICATIONS
Total questions: 10
Worksheet time: 5mins
What is the primary function of villi in the small intestine?
Absorption of nutrients
Secretion of digestive enzymes
Protection against pathogens
Production of bile
What is the primary function of xylem in plants?
Support and structure for the plant
Transport of sugars from leaves to roots
Photosynthesis
Transport of water and minerals from roots to leaves
What is the primary function of root hairs in plants?
Protecting the root from pathogens
Transporting nutrients to the leaves
Absorption of water and minerals from the soil
Anchoring the plant to the soil
Root hairs increase the surface area of the root primarily to:
Enhance water retention
Absorb more sunlight
Improve nutrient absorption
Strengthen the root structure
What is the primary function of cilia in cells?
Absorption of nutrients
Photosynthesis
Storage of genetic material
Movement of fluids or the cell itself
Which of the following is a common location where ciliated cells are found in the human body?
Small intestine
Blood vessels
Trachea
Bone marrow
Which of the following is NOT a function of the proteins in the fluid mosaic model?
Transporting molecules across the
membrane
Serving as rigid support structures
Acting as receptors for signal molecules
Acting as enzymes
What role do cholesterol molecules play in the fluid mosaic model of the cell membrane?
They allow the cell to recognize other
cells
They make the membrane less fluid and
more stable
They act as enzymes to speed up
chemical reactions
They provide energy for the cell
What is the magnification of the objective lens used in this photomicrograph?
(a)
What is the TOTAL MAGNIFICATION of this photomicrograph?
(a)
