Category: Physics

Which enzyme is responsible for adding complementary DNA? DNA polymerase How do phosphodiester bonds form in DNA? In DNA and RNA, the phosphodiester bond is the linkage between the 3′ carbon atom of one sugar molecule and the 5′ carbon atom of another, deoxyribose in DNA and ribose in RNA. When a single phosphate or […]

Why is walking possible? Newton’s third law states that every action has an equal and opposite reaction. This is relevant to walking because when you put your foot on the ground, you are applying a force to it. In doing this, the ground also actually applies an equal force onto your foot, in the opposite […]

Which is an example of density-independent factor? For example, for most organisms that breathe oxygen, oxygen availability is a density-independent factor; if oxygen concentrations decline or breathable oxygen is suddenly made unavailable, such as when oxygen-using plants are covered by rising floodwaters, those organisms perish and populations of the various affected … What do all […]

Are blue eyes from Vikings? Not only did many of the studied Vikings turn out to not be blond or blue-eyed, their genetic admixture shows they weren’t a distinct ethnic group but rather a mix of various other groups, “with ancestry from hunter-gatherers, farmers, and populations from the Eurasian steppe.” How can you tell if […]

Does Matter have color? I hope it’s not too long. atoms (as opposed to molecules) do not have colors – they are clear except under special conditions.. you could not see the color of one atom or molecule – not because it is too small – but because the color of one atom would be […]

What happens when sand is mixed in water? When sand is added to water it either hangs in the water or forms a layer at the bottom of the container. Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture. Salt can be […]

Can momentum be lost to friction? Nope. The momentum lost from an object due to friction is momentum gained by the thing the object is rubbing against. How do you know if linear momentum is conserved? The law of conservation of momentum says that the momentum of a closed system is constant in time (conserved). […]

What are the basic lab safety rules? The 10 Most Important Lab Safety Rules The Most Important Lab Safety Rule. Know the Location of Safety Equipment. Dress for the Lab. Don’t Eat or Drink in the Laboratory. Don’t Taste or Sniff Chemicals. Don’t Play Mad Scientist in the Laboratory. Dispose of Lab Waste Properly. Know […]

Does thermal energy flow from hot to cold? Heat flows from hot to cold objects. When a hot and a cold body are in thermal contact, they exchange heat energy until they reach thermal equilibrium, with the hot body cooling down and the cold body warming up. This is a natural phenomenon we experience all […]

What is the correct food chain? The process of transfer of energy from producers through a series of organisms, i.e., from primary consumers to secondary consumers and from secondary consumers to tertiary consumers by process of eating and being eaten constitute a food chain. The correct food chain is phytoplankton >> zooplankton >> fish. Are […]