Name the plant hormones responsible for the following (a) elongation of cells (b) growth of stem (c) promotion of cell division (d) falling of senescent leaves. #Science #Control and Coordination #Exemplar Science for Class 10 #NCERT #3.5 #9.4 #Short Answer type #Long answer type #Multiple Choice Questions (MCQs) 1.0 2.0 3.0 4.0 5.0 7.0 8.0 9.0 9.0

VDOMDHTMLtml> For a cell terminal potential difference is 2.2 V when circuit is open and reduces - YouTube For a cell terminal potential difference is 2.2 V when circuit.

Solution: When circuit is open then it would be EMF of cell so E = 2.2V When connected with an external resistance 5Ω we will measure terminal potential difference so I = R+rE V A −V B = E − I ( r) = I ( R) = R+rER. (i) So , V A −V B = 1.8V oltR = 5Ω E = 2.2V from equation (i) 1.8 = 5+r(2.2)(5) 9+1.8r = 11 1.8r = 2 r = 1820 = 910Ω

Potential differences across the terminals of a cell were measured (in volt) against different currents (in ampere) flowing through the cell. A graph was drawn which was a straight line ABC as shown in figure Determine from graph (i) emf of the cell (ii) maximum current obtained from the cell and (iii) internal resistance of the cell.

The nucleus (plural, nuclei) houses the cell’s genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in a gel-like substance called nucleoplasm.

Cell-surface receptors. Cell-surface receptors are membrane-anchored proteins that bind to ligands on the outside surface of the cell. In this type of signaling, the ligand does not need to cross the plasma membrane. So, many different kinds of molecules (including large, hydrophilic or "water-loving" ones) may act as ligands.

Mitochondria produce energy by turning glucose and oxygen into a chemical called ATP. ATP carries energy in its chemical bonds that the cellular machinery can use to function and grow. Once these bonds are broken and the energy is released, ATP is recycled by the mitochondria back to its active form to be used again.

Prokaryotic cell is the primitive cell and its generalized structure consists of the glycocalyx, nucleoid, pilus, mesosomes, flagellum, cell wall, fimbriae, granules, cell membrane and endospore. Glycocalyx is a layer that functions as a receptor and also acts as a cell wall. Nucleoid is the condensed DNA packet material.

Protein synthesis is the process by which cells make proteins. It involves the transcription of DNA and the translation of mRNA.. These modifications allow multiple proteins to be synthesized.

Expert Answer. 1st step. All steps. Final answer. Step 1/1. Comparison between eukaryotic and prokaryotic cell. View the full answer.

cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.

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.