What is the main function of nucleolus? The nucleolus is a region found within the cell nucleus that is concerned with producing and assembling the cell’s ribosomes. Following assembly, ribosomes are transported to the cell cytoplasm where they serve as the sites for protein synthesis. What is the function and structure of the nucleolus? The […]
Which of the following can astronomers determine from the spectrum of an object choose one or more?
Which of the following can astronomers determine from the spectrum of an object choose one or more? From spectral lines astronomers can determine not only the element, but the temperature and density of that element in the star. The spectral line also can tell us about any magnetic field of the star. The width of […]
What is the main difference between work and power?
What happens if you jump in a geyser?
What happens if you jump in a geyser? Feet can easily punch through the brittle ground, exposing groundwater that can reach 250 degrees, melting soles and scalding feet with third degree burns. How often does Old Faithful geyser? around 20 times a day What does geyser mean? Geyser, hot spring that intermittently spouts jets of […]
Is Moon getting brighter?
Is Moon getting brighter? When the Earth (and therefore the Moon) is at its perihelion, the closest point in its orbit to the Sun, the sunlight that reflects off the Moon is slightly more intense, causing the full moon’s brightness to increase by about 4%, which is imperceptible by the human eye. Do gamma rays […]
Why do conifer seeds have wings?
Why do conifer seeds have wings? Early trees had wind-borne spores rather than seeds. About 365 million years ago some plants evolved seeds with a food store, to give the developing embryo a head start. These were heavier, so the early conifers began to evolve seed coats with enlarged ribs or vanes to help catch […]
Which energy source is the cheapest?
Which energy source is the cheapest? The IRENA report found that solar and onshore wind are the cheapest energy sources. It states that in 2017 wind turbine prices had an average cost of $0.06 per kWh, and at times dropped to $0.04 per kWh. Are windmills dangerous to birds? Audubon strongly supports wind power and […]
Do ovens use a lot of electricity?
Do algae release oxygen?
Do algae release oxygen? Like most plants, many algae produce oxygen during the daylight as a by-product of photosynthesis. At night these algae consume oxygen, but usually much less than was produced during the daylight. How can algae decrease oxygen levels? The overgrowth of algae consumes oxygen and blocks sunlight from underwater plants. When the […]
Is rate of reaction slower or faster?
Is rate of reaction slower or faster? The rate of a reaction is the speed at which a chemical reaction happens. If a reaction has a low rate, that means the molecules combine at a slower speed than a reaction with a high rate. Some reactions take hundreds, maybe even thousands, of years while others […]