Why do we use safranin as a stain Class 9? Answer. we use safronin as a stain because safronin cleans the dirt and clears what we are going to see. What Counterstain is used why is it necessary? Why is it necessary? Could colors other than red be used?  Safranin is used as a […]

What is the mechanism of action of local anesthetics? Mechanism of action of local anesthetics — LAs reversibly inhibit nerve transmission by binding voltage-gated sodium channels (Nav) in the nerve plasma membrane. Nav channels are integral membrane proteins, anchored in the plasma membrane. How does local anesthetic work? The local anaesthetic works by moving to […]

What role does Cas9 play in the Crispr process? When the target DNA is found, Cas9 – one of the enzymes produced by the CRISPR system – binds to the DNA and cuts it, shutting the targeted gene off. Using modified versions of Cas9, researchers can activate gene expression instead of cutting the DNA. These […]

What part of the flower elevates the anther? filament What is the purpose of the anther? Parts of a flower Structure Function Anthers Produce male sex cells (pollen grains) Stigma The top of the female part of the flower which collects pollen grains Ovary Produces the female sex cells (contained in the ovules) Nectary Produce […]

What causes the igneous rock to have different sizes of crystals? Igneous rocks are made up of several different mineral crystals that grow within the melt as it cools. If magma is trapped underground in an igneous intrusion, it cools slowly because it is insulated by the surrounding rock. Crystals have more time to grow […]

Does glucose use secondary active transport? Fig 3: Glucose Symporter The glucose symporters are secondary active transporters that use the energy stored in a cell’s sodium gradient (which is created by the Na+/K+-ATPase that keeps intracellular sodium concentration low) to “power” the transport of glucose up its concentration gradient, as shown in Figure 3. Why […]

How do desert plants prevent loss of water? Stomata are the holes in plant leaves through which they transpire water. This adaptation helps cacti reduce water loss by keeping the hot, dry wind from blowing directly across the stomata. The leaves and stems of many desert plants have a thick, waxy covering. How do water […]

Which is the cause of physical or mechanical weathering? Mechanical weathering physically breaks down rocks because of environmental factors that include heat, cold, water and wind. One form of mechanical weathering is thawing or constant freezing of water. Water, in liquid form, penetrates the many fissures, joints and holes within a rock. What are causes […]

How do plants and fungi get nutrients? Fungi get their nutrition by absorbing organic compounds from the environment. They decompose dead organic matter. A saprotroph is an organism that obtains its nutrients from non-living organic matter, usually dead and decaying plant or animal matter, by absorbing soluble organic compounds. How do fungi plants and animals […]

What is a warming of the planet due to carbon dioxide and heat retention? Greenhouse Effect. This is a warming of the planet due to carbon dioxide and heat retention. How does carbon dioxide emissions affect the environment? Extra carbon dioxide in the atmosphere increases the greenhouse effect. More thermal energy is trapped by the […]