What is the difference between epithelial cells and elodea cells

These organelles are the chloroplasts, cell wall, and vacuoles. Plant cells have several organelles not found in animal cells. It may be the result of a contaminated sample. Epithelial cells may also reveal underlying conditions, such as a UTI or kidney disorder. Only your doctor can interpret your test results and decide your best course of action. Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands.

They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

From the data, it was calculated that the average life span of stromal cells is probably longer than 30 years and of epithelial cells longer than 2 years. Hence in human prostatic tissue the average cell death rate might be rather low. How do the size of a human epithelial cell compare to the bacteria and elodea cells that you examined earlier?

Compared to the bacteria and elodea cells, the cheek cells are a tad bit larger but much less numerous than the two. In the Elodea leaves and onion epidermis, you saw tightly packed cells. Typically, leucoplasts are numerous and appear as small ovoid structures within the cell. Those that specifically function in starch storage are amyloplasts. This Elodea leaf cell exemplifies a typical plant cell.

It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food by photosynthesis. The central vacuole takes up most of the volume of the cell. Carcinoma in situ is a diagnosis pathologists use to describe epithelial cells that look the same as cancer cells but are still seen only in the epithelium.

Carcinoma in situ is called a non-invasive type of cancer because the abnormal epithelial cells have not spread to the tissue below the epithelium. Place it on a microscope slide. Add a drop of iodine on top of the slice of potato. Place a coverslip on top. Observe the potato slice under the microscope. Iodine stains starch a purple or blue-black color. Scrape the cloudy cell-containing fluid onto a slide, add a drop of dilute methylene blue, and observe under the microscope Figure 6.

Note that bacteria and possibly fungi on top and around your cheek cells. Can you distinguish multiple types of white blood cells? Return the slide to the white slide box. Note red and two types of white blood cells. What distinguishes animal cells from plant cells? What are mitochondria? Plastids are organelles found in plants and algae. Some organic compounds are produced and stored in plastids. The green pigment, chlorophyll, is located in special photosynthetic plastids called chloroplasts.

Other kinds of plastids include chromoplasts, which contain pigments other than chlorophyll, and amyloplasts which store starch. The central sap vacuole often occupies a large space within the cytoplasm of plant cells, but may be small or absent in other types of cells. Often, other organelles found in plant cells are located adjacent to the plasma membrane because the central vacuole takes up so much space within the cell.

Under healthy conditions for plant cells, the central vacuole is large and produces turgor pressure against the cell wall, which is located outside the cell membrane. The cell wall keeps plant cells from bursting. Some other cells also have cell walls, but they are generally made of different materials.

Plant cell walls are made of cellulose, while bacteria have cell walls made of peptidoglycan and fungi have cell walls made of chitin. Archaea and algae also have cell walls made of various compounds.

A mature cork cell is non - living and has cell walls that are composed of a waxy substance that is highly impermeable to gases and water called suberin. Answer and Explanation: Some human epithelial cells are thin and platelike , but not all of them.

Thin , platelike epithelial cells are called squamous epithelial cells , taken. Movement of Chloroplasts Chloroplasts do move in a cell. They jostle and slide and scoot around the cell , often sticking near the edges of the cell but sometimes seeming to fill the cell entirely with constant motion. The motion is common to the interior of cells and is called cyclonic or cytoplasmic streaming.

Some epithelial cells also contain cilia that are long, thin extensions of the plasma membrane. Cilia are motile and move in wave-like fashion to generate flow in a lumen. This allows epithelial cells to move directionally large particles: ovum in fallopian tubes, mucus in trachea. Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth. Cellulose fibers are long, linear polymers of hundreds of glucose molecules. These fibers aggregate into bundles of about 40, which are called microfibrils.

What structures do human epithelial cells have in common with elodea cells? They both have a cell membrane,nucleus and cytoplasm. Elodea cells have a cell wall and chloroplast, human epithelial cells have a small vacuole. Do onion cells have chloroplasts? Onion cells do not have chloroplasts becausethe onion is underground where there is nolight. Without light, chloroplasts have no purpose. The green leaves and stem of an onion plantare normally exposed to daylight and so havechloroplasts, but the onion does not.

An onion cell is approximately 0.