It might be a little tricky to remember all the parts and organelles of a plant cell. But if you take the help of a diagram, everything becomes simpler. Suitable for: Grade 8, Grade 9 Label the Plant Cell Worksheet Download PDF Parts of a Plant Cell in Cross Section Diagram Worksheet Colored Version Download PDF Suitable for: Grade 8, Grade 9 Plant Cell Coloring Worksheet Download PDF Fill your E-mail Address...
What is the Sodium-Potassium Pump Sodium-Potassium Pump, also known as the Na + /K + pump or Na + /K + -ATPase, is a transmembrane protein pump found in animals’ cell (plasma) membrane. Its fundamental purpose is to transport sodium and potassium ions across the cell in the ratio of 3: 2. It means, during one cycle, 3 sodium ions move out for every 2 potassium ions brought in. Since this entire process requires the cell’s metabolic energy in the form of ATP, it is considered an example of active transport....
Stabilizing selection, a form of natural selection, favors the intermediate or average traits within a population. In other words, stabilizing selection tends to maintain the status quo, preserving the existing characteristics of a population rather than pushing them toward extremes. It is the opposite of disruptive selection, where the two extreme phenotypes are selected. Over time, it results in the loss of phenotype as the populations tend to lose extreme phenotypes or attain more moderate phenotypes....
It is a very nicely presented information about the different aspects of friction. Actually I am interested to reproduce some of the figures given here to explain the different types of friction. But I can not contact science.facts.net. Kindly give the E-mail address so that I can send the required permission request form. I am preparing a chapter on the tribology of polymers and their micro- and nanocomposites. I would like to use some of the nice figures presented here....
Terminal velocity is the constant speed an object acquires after falling through fluid, like air. It occurs when the sum of the buoyant force and the drag force equals the force due to gravity. The terminal velocity is the highest velocity during the object’s fall. Since its speed is constant, the net force acting on the object is zero, and it will have no acceleration. Hence, terminal velocity is an example of balanced force....
An ecosystem constitutes all the living and non-living things and the environment around that community. There is a specific area for different ecosystems where the living things interact with each other and the environment. Broadly, there are two types of ecosystems on Earth – terrestrial and aquatic. However, there are different types of terrestrial and aquatic ecosystems. Terrestrial Ecosystems Terrestrial ecosystems are land ecosystems. Based on their geographic location, the different types of terrestrial ecosystems are:...
A circular motion refers to an object’s motion in a circular path. Uniform circular motion occurs when the object moves at a constant linear speed. An object prescribing a circular path has a well-defined velocity with magnitude and direction. Uniform circular motion is a specific case in which the velocity remains constant in magnitude (speed) but not direction. The direction is tangential to the circle and changes as the object changes its position, resulting in acceleration....
The law of conservation of energy states that energy can neither be created nor destroyed – it transforms from one form to another. For example, solar panels do not create energy. They harness energy from the Sun and convert light energy into electrical energy. All types of energy obey this law. As a result of energy conservation, the total energy in an isolated system is constant. If there is a loss of energy in one part of an isolated system, there must be a gain in another part....
Contact angle is a fundamental concept in surface science and engineering. It measures how a liquid spreads on a solid surface, providing insights into wettability. Contact angle is the angle between a liquid droplet and a solid surface formed at the interface between solid, liquid, and gas. More importantly, contact angle allows researchers to study the interactions between these three phases. The cohesive and adhesive forces describe these interactions. Cotact Angle Water Drop...
Convection is the heat transfer process from one region to another due to the movement of fluids like air or water. The initial heat transfer occurs through conduction, but the primary transfer occurs through convection. It is the dominant form of heat transfer in liquids and gases. Types of Convection Convection is of two types – natural and forced. Natural convection is due to buoyancy and the buoyant force acting on the fluid....
I have a problem with Formulas Of Electrostatics ????please can Somebody help me to Understand
Nice description of the different parts of the food chain!
Uses of inclined plane
Here are a couple of worksheets to help you learn and practice the layers of our Earth’s atmosphere , their altitudes, as well as the other important landmarks in the atmosphere. Suitable for: Grade 7, Grade 8 Layers of the Atmosphere Worksheet Download PDF Earth’s Atmosphere Worksheet Download PDF Suitable for: Grade 7 Layers of the Atmosphere Worksheet Answers Download PDF Fill your E-mail Address Popular Articles
Layers of the Sun Worksheet Download PDF Fill your E-mail Address Popular Articles
What is Meiosis Meiosis is a cell division process where a single (parent) cell divides twice to produce four independent (daughter) cells, each having half the chromosomes as the original cell. The term ‘meiosis’ came from the Greek word ‘meiosis’, meaning ‘lessening’. Where does Meiosis Occur Meiosis takes place only in the reproductive cell types (sperm and egg cells) of sexually reproducing organisms, including humans. For a cell to undergo meiosis, it must have a diploid (2n) chromosome number....
What is Phragmoplast Phragmoplast is a specialized cylindrical structure that only forms during the late cytokinesis of plant cells. It helps to separate two daughter cells by forming a new cell wall. The land plants belonging to the streptophyte lineage and some species of the green algae, such as Coleochaetales, Charales, and Zygnematales, undergo phragmoplast-mediated cell division. This type of cell division is generally not found in the other green plant lineage, like the chlorophyte algae....
Definition: What is Polarization of Light? Natural sunlight, light emitted by a lamp, and any other source of artificial light consist of an oscillating electric field in a plane perpendicular to the direction of propagation. The electric field is vibrating in all directions in this plane. Such type of light is known as unpolarized light. However, when unpolarized light passes through a filter, the oscillations are confined along one line only....
Popular The Main Parts of a Plant With Their Functions Parts of a Tree and Their Functions Plant Cell: Parts and Structure With Functions Featured The root is commonly the underground part of the plant body that helps to anchor it down to the ground and absorbs water A desert is a dry, barren landscape which receives an annual rainfall of less than 25 centimeters. Deserts cover about o...
Shockley equation is a fundamental expression in semiconductor physics that describes the relationship between the current flowing through a diode and the voltage across it. The equation provides a mathematical model that predicts the behavior of p-n junction diodes under various conditions. The equation is named after American inventor and physicist William Shockley, who was one of the inventors of the transistor in 1947. Representation Shockley equation considers the intrinsic material properties like the reverse saturation current and the thermal voltage....
