What stage of mitosis takes the shortest? anaphase What stage is observed most frequently in mitosis? metaphase What is the relationship between DNA Chromatin and Chromosomes? ​Chromatin Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell’s genetic instructions. The major proteins in chromatin are histones, which help […]
What can a shadow tell you about the size of the source of light?
What can a shadow tell you about the size of the source of light? The location of a light source relative to the object casting shadows determines the size of the shadows. Alternatively, moving the light closer to the subject will enlarge the shadow, making the shadow much bigger than the subject itself, as shown […]
Which experiment is known as the most beautiful experiment?
Which experiment is known as the most beautiful experiment? The Meselson-Stahl experiment Which model of DNA replication is correct? The semi-conservative model is the intuitively appealing model, because separation of the two strands provides two templates, each of which carries all the information of the original molecule. It also turns out to be the correct […]
When would the center of mass change?
When would the center of mass change? If a system experiences no external force, the center-of-mass of the system will remain at rest, or will move at constant velocity if it is already moving. If there is an external force, the center of mass accelerates according to F = ma. How does the Centre of […]
What is the biggest sunken treasure ever found?
What is the biggest sunken treasure ever found? Nuestra Senora de Atocha Can you claim sunken treasure? A country may claim ownership of a wreck if it owned the ship in the first place. Even if a vessel was sunk and abandoned for hundreds of years the original owner can still claim ownership rights. However, […]
What is the role of science and technology in the society?
What is the role of science and technology in the society? The essence of how science and technology contributes to society is the creation of new knowledge, and then utilization of that knowledge to boost the prosperity of human lives, and to solve the various issues facing society. How does science and technology help society? […]
Where does the energy of redshifted photons go?
Where does the energy of redshifted photons go? Where does the energy go when light is redshifted? It doesn’t go anywhere. Let’s say we’re motionless with respect to some source which is emitting a stream of photons. We agree that the photons have some energy E=hf. How much energy is lost when light hits a […]
What are the main principles of realism?
What are the main principles of realism? The four propositions of realism are as follows. States are the most important actors. The international system is anarchic. All states within the system are unitary, rational actors. The primary concern of all states is survival. What are the six principles of realism? Morgenthau’s Realist Theory (6 Principles) […]