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Components of a typical plant cell: a. Plasmodesmata b. Plasma membrane c. Cell wall 1. Chloroplast d. Thylakoid membrane e. Starch grain 2. Vacuole f. Vacuole g. Tonoplast h. Mitochondrion i. Peroxisome j. Cytoplasm k. Small membranous vesicles l. Rough endoplasmic reticulum 3. Nucleus m. Nuclear pore n. Nuclear envelope o. Nucleolus p ...
Chloroplasts have many similarities with photosynthetic bacteria, including a circular chromosome, prokaryotic-type ribosomes, and similar proteins in the photosynthetic reaction center. [21] [22] The endosymbiotic theory suggests that photosynthetic bacteria were acquired (by endocytosis) by early eukaryotic cells to form the first plant cells ...
Structure of a plant cell. Plant cells are the cells present in green plants, photosynthetic eukaryotes of the kingdom Plantae.Their distinctive features include primary cell walls containing cellulose, hemicelluloses and pectin, the presence of plastids with the capability to perform photosynthesis and store starch, a large vacuole that regulates turgor pressure, the absence of flagella or ...
Components of a typical plant cell: a. Plasmodesmata b. Plasma membrane c. Cell wall 1. Chloroplast d. Thylakoid membrane e. Starch grain 2. Vacuole f. Vacuole g. Tonoplast h. Mitochondrion i. Peroxisome j. Cytoplasm k. Small membranous vesicles l. Rough endoplasmic reticulum 3. Nucleus m. Nuclear pore n. Nuclear envelope o. Nucleolus p ...
Plant physiology – subdiscipline of botany concerned with the functioning, or physiology, of plants. [1] Cell biology – study of the cell as a complete unit, and the molecular and chemical interactions that occur within a living cell. Histology – study of the anatomy of cells and tissues of plants and animals using microscopy.
Bacteria (prokaryotes, together with Archaea) share many common features. These commonalities include the lack of a nuclear membrane, unicellularity, division by binary-fission and generally small size. The various species can be differentiated through the comparison of several characteristics, allowing their identification and classification.
When the virus replicates faster than the immune system can control, it can destroy cells and harm the body, and it can even incite an over-zealous immune reaction that can cause other damage.
In comparison to eukaryotes, the intracellular features of the bacterial cell are extremely simple. Bacteria do not contain organelles in the same sense as eukaryotes . Instead, the chromosome and perhaps ribosomes are the only easily observable intracellular structures found in all bacteria .