What are microvilli? How make these constructions relate to the map of enteric cells? Microvilli are long. ( Area is relative to a additive dimension cubed. its volume grows proportionately more than its surface country. As a cell ( or any other object ) increases in size. Cells are little because a high surface-to-volume ratio facilitates the exchange of stuffs between a cell and its environment. Why are cells so little? Explain the relationship of surface country to volume. cell wall: stiff construction outside the plasma membrane plasma membrane: membrane enveloping the cytol bacterial chromosome: carries cistrons in the signifier of DNA nucleoid: part where the cellвЂ™s DNA is located ( non enclosed by a membrane ) cytol: inside of cell scourge: motive power cell organs of some bacteriums See page 98 in your text for the labelled figure. label each of these characteristics and give its map or description. the Deoxyribonucleic acid is concentrated in a part that is non membrane enclosed. most of the Deoxyribonucleic acid is in an cell organ called the karyon. A major difference between procaryotic and eucaryotic cells is the location of their Deoxyribonucleic acid. Which two spheres consist of procaryotic cells? Bacteria and Archaea 6. 2 Eukaryotic cells have internal membranes that compartmentalize their maps 5. Which cell organs are the smallest 1s isolated in this process? Ribosomes Concept 6. This will insulate different cell organs and let survey of their biochemical activ. smaller and smaller cell parts are isolated. and this slurry is centrifuged several times. whole cells are broken up in a liquidizer. ensuing in assorted positions of the cells prepared. but should advert that this type of microscopy profiles a thin subdivision of a specimen. transmittal negatron microscopy ( TEM ) Answers may change. but should depict the 3-D constituent of the specimen image. Describe the different types of images obtained from: scanning negatron microscopy ( SEM ) : Answers may change. Analyze the negatron micrographs in your text. What is considered a major disadvantage of negatron microscopes? The methods used to fix the specimen kill the cells. The development of negatron microscopes has farther opened our window on the cell and its cell organs. Resolution is a step of the lucidity of the image it is the minimal distance two points can be separated and still be distinguished as two points. Magnification is the ratio of an objectвЂ™s image size to its existent size. Magnification and deciding power bound what can be seen. crafted lenses and with the betterments in optical AIDSs. when Robert Hooke foremost looked at dead cells from an oak tree. and so they were non seen and described until 1665. The survey of cells has been limited by their little size. 1 Biologists use microscopes and the tools of biochemistry to analyze cells 1.

Ap bio study guide answers chapter 6