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.

The potential difference between the terminals of a cells is found to be 3 volts when it is connected to a resistance equal to its internal resistance. The e.m.f. of the cell is:- ADVERTISEMENT लिखित उत्तर A 3V B 6V C 1.5v D 4.5V Answer The correct Answer is 2 उत्तर

Every cell in your body contains organelles (structures that have specific functions). Just like organs in the body, each organelle contributes in its own way to helping the cell function well as a whole. The nucleus, mitochondria and chloroplasts are all organelles. Despite their central importance to cell function (and therefore to all life.

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.

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.

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.

DNA (deoxyribonucleic acid) is the cell’s genetic material, contained in chromosomes within the cell nucleus and mitochondria. Except for certain cells (for example, sperm and egg cells and red blood cells), the cell nucleus contains 23 pairs of chromosomes. A chromosome contains many genes. A gene is a segment of DNA that provides the code.

Cell Size At 0.1–5.0 µm in diameter, prokaryotic cells are significantly smaller than eukaryotic cells, which have diameters ranging from 10–100 µm (Figure 2). The small size of prokaryotes allows ions and organic molecules that enter them to quickly spread to other parts of the cell.