Which disease is the result of somatic mutation? Somatic mutations can give rise to cancer (9), as well as noncancerous diseases. Noncancerous somatic mutations that occur during development may affect cell proliferation, as would be the case in cancer, or they may simply alter cellular function without causing a proliferative effect. What causes somatic mutation? […]
Why do plant cells have cell walls and animal cells do not?
Why do plant cells have cell walls and animal cells do not? Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . All cells have cell membranes, and the membranes are flexible. So animal cells can have various shapes, but […]
What happens when entropy decreases?
What happens when entropy decreases? The total entropy of a system either increases or remains constant in any process; it never decreases. For example, heat transfer cannot occur spontaneously from cold to hot, because entropy would decrease. Entropy is very different from energy. Entropy is not conserved but increases in all real processes. What causes […]
Is the relationship between frequency and wavelength direct?
Is the relationship between frequency and wavelength direct? Wavelength (typically measured in nanometers) is the distance between two points in a wave. Frequency and wavelength have both direct and inverse relationships. The wave with shorter wavelength will have a higher frequency while a longer wavelength will have a lower frequency. Is frequency and energy directly […]
Is thermal energy the total kinetic energy of an object?
Is thermal energy the total kinetic energy of an object? Thermal energy is the total internal kinetic energy of an object due to the random motion of its atoms and molecules. It is sometimes confused with internal energy or thermodynamic energy. They consist of the sum of the internal kinetic energy (thermal energy) and the […]
What is the most important element of history?
What is the most important element of history? Plot: The most important element. The sequence of events in a story. What are the 7 elements of history? Tips on Setting in Historical Fiction The most popular post on A Writer of History is about the 7 Elements of Historical Fiction: characters, dialogue, plot, conflict, theme, […]
At what age are people most physically active?
At what age are people most physically active? Age The age group 18 to 44 was the most likely to exercise. Of those individuals age 18 to 44, 59.7 percent reported exercising at least three times a week for half an hour or more. This compares with 53.5 percent and 46.7 percent, respectively, for the […]
Does hair color come from Mom or Dad?
What are the features of a sedimentary rock?
What are the features of a sedimentary rock? Sedimentary rocks contain rounded grains in layers. The oldest layers are at the bottom and the youngest layers are at the top. Sedimentary rocks may contain fossils of animals and plants trapped in the sediments as the rock was formed. What type of minerals are found in […]