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

For a cell terminal potential difference is 2.2 V when circuit is open and reduces to 1.8V when cell is connected to a resistance of R=5Omega then determine internal resistance of cell is:- x(cm) = ((rho2r^(2)) (r )/(2) - (rho(pir^(2))/(2)) ((4r)/(3pi)))/((rho2r^(2)) - (rho(pir^(2))/(2)))= (2r)/(3(4 - pi))

Detailed Solution Download Solution PDF Concept: Kirchhoff’s Voltage Law (KVL): It states that the sum of the voltages or electrical potential differences in a closed network is zero. Mathematically we can express this as: ∑ n = 1 M V n = 0 Where V n represents the n th Voltage M is the total number of voltage element.

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.

epithelial a thin layer of tissue that covers surfaces and lines hollow organs erythrocyte a red blood cell hemoglobin a red pigment that allows the erythrocytes to pick up and drop off oxygen molecules insertion point of skeletal muscle attachment on the body part the muscle moves leukocyte a white blood cell muscle fiber

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 are known as the powerhouse of cells. It is because the mitochondrion is the site of cellular respiration where energy in the form of ATP (Adenosine triphosphate) is generated as a result of oxidation of foodstuffs.

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.

Globular proteins like hemoglobin, on the other hand, are folded and compact. Hemoglobin, found in red blood cells, is an iron-containing protein that binds oxygen molecules. Its compact structure is ideal for traveling through narrow blood vessels. Protein Synthesis . Proteins are synthesized in the body through a process called translation.

The oval purple mass in the center is the nucleus of the epithelial cell. Prokaryotic cells are generally much smaller and more simple than eukaryot ic (Figure 1.2. 1 ). Pro karyotic cells are, in fact, able to be structurally more simple because of their small size. The smaller a cell, the greater is its surface-to-volume ratio (the surface.

During interphase of the cell cycle, the chromosome exists in a loose structure, so proteins can be translated from the DNA and the DNA can be replicated. During mitosis and meiosis, the chromosome becomes condensed, to be organized and separated.

In addition, the DNA is less structured in prokaryotes than in eukaryotes: in prokaryotes, DNA is a single loop while in Eukaryotes DNA is organized into chromosomes. Most prokaryotes are made up of just a single cell (unicellular) but there are a few that are made of collections of cells (multicellular).