12 Questions
What is the primary function of the channel protein in the fluid mosaic model of the cell membrane?
To transport water-soluble molecules via diffusion
What is the advantage of having a higher surface area to volume ratio in cells?
It makes the cell more efficient in terms of material transport
What is the term for the process by which water moves from an area of high concentration to an area of low concentration across a semi-permeable membrane?
Osmosis
What is a characteristic of all cells, according to cell theory?
They come from pre-existing cells
What is the primary function of the transmission electron microscope (TEM) in cell biology?
To pass electrons through a sample to make an image
What is the main difference between Archaebacteria and Eubacteria?
Archaebacteria live in extreme environments
What is the role of phospholipids in the fluid mosaic model of the cell membrane?
To make up the bilayer of the cell membrane
What is a characteristic of prokaryotic cells?
They have a singular, circular chromosome of DNA
What is the term for the ability of the cell membrane to control what enters and leaves the cell?
Selective permeability
What is the function of the large central vacuole in plant cells?
Waste disposal and storage
What is a characteristic of animal cells?
They have lysosomes
What is the main difference between Gram positive and Gram negative bacteria?
Gram positive bacteria have a thicker peptidoglycan layer
Test your knowledge of cell theory, including the principles developed by scientists in 1839, and the characteristics of prokaryotic and eukaryotic cells. This quiz covers cell structure, function, and classification, including gram positive and gram negative bacteria.
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