cell


Name the plant hormones concerned with following activities: (a) Promotion of cell division (b) Promotion of flowering (c) Inhibition of seed germination Watch complete video answer for “Name the plant hormones concerned with following activities: ” of Biology Class 11th.



For a cell terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V when cell is connected to a resistance of R=5Ω then determine internal resistance of cell is :- A 910Ω B 109 Ω C 911Ω D 95Ω Hard Solution Verified by Toppr Correct option is A) When the circuit is open , the terminal voltage is equal to the emf i.e E=2.2V.



1 Volt is a name for the unit Joule-per-Coulomb (energy-per-charge). 2.5 volt means 2.5 Joules per Coulomb. A 2.5 volt battery means that there is a difference of 2.5 Joules per Coulomb from one terminal to the other.



For example, over here, if we said the potential difference between these two points is 1.5 volts. Than it means there is a difference in energy, potential energy, of 1.5 joules per coulomb. The per coulomb part says, that every coulomb as it moves from here to here, it gains 1.5 joules of potential energy.



Although most organelles are functional units within cells, some function units that extend outside of cells are often termed organelles, such as cilia, the flagellum and archaellum, and the trichocyst. Organelles are identified by microscopy, and can also be purified by cell fractionation.



Each polypeptide protein translated by ribosomes from a sequence of bases in an mRNA has a specific functional location, either in the cytoplasm, on cellular membranes, inside organelles or in extracellular fluids.



mitochondria Found in both plant and animal cells. Organelle that releases energy stored in food. Cellular respiration occurs in this organelle. Known as the "powerhouse" of the cell. ribosomes Produces proteins for the cell. Found in both prokaryotic and eukaryotic cells some are found attached to the endoplasmic reticulum and some are unattached.



In this article, we will discuss the difference between prokaryotic and eukaryotic cells. Contents hide 1 Prokaryotic cell 2 Eukaryotic cell 3 Difference between prokaryotic and eukaryotic cell 3.1 1. Size 3.2 2. Genetic material 3.3 3. Nucleus 3.4 4. Chromosome number 3.5 5. Membrane-bound organelles 3.6 6. Mesosomes 3.7 7. Ribosomes 3.8 8.



In eukaryotic cells, chromosomes always remain in the nucleus, but proteins are made at ribosomes in the cytoplasm or on the rough endoplasmic reticulum (RER). How do the instructions in DNA get to the site of protein synthesis outside the nucleus?



Eukaryotic cells are cells that contain a nucleus. Eukaryotic cells are usually larger than prokaryotic cells, and they are found mainly in multicellular organisms. Organisms with eukaryotic cells are called eukaryotes, and include fungi, animals, protists, and plants. Eukaryotic cells also contain other organelles besides the nucleus.



Most of what researchers know about chromosomes was learned by observing chromosomes during cell division. Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.” The short arm of the chromosome is labeled the “p arm.” The long arm of the chromosome is labeled the “q.



The most fundamental difference is that eukaryotes do have "true" nuclei containing their DNA, whereas the genetic material in prokaryotes is not membrane-bound. Structure and contents of a typical Gram-positive bacterium cell (a prokaryotic cell)