Cell organelle essay questions

InRobert Hooke, an English scientist, published his book Micrographia, in which he described that pieces of cork viewed under a microscope presented small cavities, similar to pores and filled with air.

What is its biological function? What are the two main groups into which cells are classified? What is cell theory? Lysosomes contain digestive enzymes hydrolases that are produced in the rough endoplasmic reticulum and stored in the Golgi apparatus.

In young plant cells, many small vacuoles can be seen; within adult cells, the majority of the internal area of the cell is occupied by a central vacuole.

The aqueous fluid that fills the nuclear region is called karyolymph, or the nucleoplasm. The organelles that participate in cell division and in the formation of the cilia and flagella of some eukaryotic cells are centrioles.

For example, the interaction between actin-containing filaments and the protein myosin creates pseudopods. These molecules are found in the internal membranes of chloroplasts. What is the fluid that fills the nucleus called? Microtubules are formed by molecules of a protein called tubulin.

Chlorophyll A has an absorption peak at a wavelength of approximately nm indigo and chlorophyll B has its major absorption at a wavelength of nm blue. The energy source of photosynthesis is the sun, the unique and central star of our solar system.

To which other cellular organelles can the hypothesis also be applied? What substances is chromatin made up of? What is the plasma membrane of the cell? A netlike membrane complex of superposed flat saccules with vesicles detaching from its extremities seen is observed during electron microscopy.

Most bacteria also have an outer cell wall made of peptidoglycans and other organic substances. What substances make up the nucleolus?

In bacteria, the cell wall is made of peptidoglycans; among protists, algae have cell walls made of cellulose; in fungi, the cell wall is made of chitin the same substance that makes the exoskeleton of arthropods ; and in plants, the cell wall is also made of cellulose.

Microfilaments are made of actin, the same protein that is involved in the contraction of muscle cells.

Cell Organelle Test

It is presumed that mitochondria were primitive aerobic prokaryotes that were engaged in mutualism with primitive anaerobic eukaryotes, receiving protection from these organisms and providing them with energy in return.

Lysosomes enfold the substances to be broken down, forming digestive vacuoles or residual vacuoles, which later migrate toward the plasma membrane, fusing with it and releasing exocytosis the digested material to the exterior. What is the endosymbiotic hypothesis regarding the origin of mitochondria?

In the cells of the phagocytic defense system, such as macrophages, the cytoskeleton is responsible for the plasma membrane projections that engulf the external material to be interiorized and attacked by the cell. This cytoplasmic organelle is associated with chemical processing and the modification of proteins made by the cell as well as with the storage and marking of these proteins for later use or secretion.Quiz: Cell Organelles and Their Functions.

1. This organelle functions in cellular respiration: lysosome endoplasmic reticulum mitochondrion golgi apparatus. Essay Questions On Cell Biology 1. Describe each cell organelle and its function. What is the difference between the nuclear envelop and the cell membrane in terms of.

Essay Questions Possible essay topics for student assessment are given below. They are given under are most relevant, but many require reading in other chapters as well as indicated in the brackets after each title. CHAPTER 1: CELLS AND TISSUES Why are viruses not regarded as being alive?

Quiz: Cell Organelles and Their Functions

{Chapter 1} CELL CYCLE AND THE. Learn with flashcards, games, and more — for free. Cell Biology Class Test Questions for Exam #3. 1. Name two similarities and two differences between the cellular processes of importing Which organelle(s) from the above list communicate(s) with other organelle(s) Cell A’s membrane is more fluid, while B’s is less fluid.

Discuss which mitochondria will be better able to import. Previous IB Exam Essay Questions: Unit 1 Award 2 max if any plant cell structure (e.g.

cell wall) is present. Distinguish between the structure of plant and animal cells. 6 marks. Award 1 mark per difference plant cells. have cell walls, animals do not.

Cell organelle essay questions
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