What cell structures do eukaryotes have? In addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus, and lysosomes. What are some examples of prokaryotic and eukaryotic cells? Prokaryotic cells lack internal cellular bodies (organelles), while eukaryotic cells possess them. Examples […]
What are some good mutations?
What are some good mutations? The genetic mutation that drives evolution is random. But here’s a list of some beneficial mutations that are known to exist in human beings Beneficial mutation #2: Increased bone density. Beneficial mutation #3: Malaria resistance. Beneficial mutation #4: Tetrachromatic vision. What are two environmental factors that can cause mutations? Mutations […]
What is the first rain called?
What is the first rain called? Petrichor Is first rain harmful? The first rains of the season can be acidic, due to the presence of pollutants present in the atmosphere. The toxic gases can combine with the water to form harmful acids, which when fall on our skin and hair can harm them immensely. Hair […]
Why is a deficit bad?
Why is a deficit bad? An increase in the fiscal deficit, in theory, can boost a sluggish economy by giving more money to people who can then buy and invest more. Long-term deficits, however, can be detrimental for economic growth and stability. The U.S. has consistently run deficits over the past decade. Is the deficit […]
What are the three main stages of cellular respiration?
What are the three main stages of cellular respiration? Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. Glycolysis is an anaerobic process. The other two stages are aerobic processes. The products of cellular respiration are needed for photosynthesis, and vice versa. What are the four main stages of cellular respiration? […]
Can you see the North Star in Australia?
Can you see the North Star in Australia? During a 25,800-year cycle, the position of Earth’s axis in space traces out a 46.88°-wide circle on the sky. At that time, Polaris will be visible anywhere north of 45.95° south latitude (90°–44.62°+0.57°), and our current “North Star” will grace the skies above all of Africa and […]
Do concave mirrors produce real images?
Do concave mirrors produce real images? Only a concave mirror can be used to produce a real image; and this only occurs if the object is located at a position of more than one focal length from the concave mirror. Plane mirrors never produce real images. A concave mirror will only produce a virtual image […]
Why is the North Star Fixed?
Why is the North Star Fixed? Polaris, the North Star, appears stationary in the sky because it is positioned close to the line of Earth’s axis projected into space. As such, it is the only bright star whose position relative to a rotating Earth does not change. All other stars appear to move opposite to […]
How long can an abscess go untreated?
How long can an abscess go untreated? If left untreated, the abscess may spread to your brain or spinal cord. The abscess is large, hasn’t healed within two weeks, and you also have a fever. The abscess appears to be spreading to other parts of your body. The abscess is becoming more painful or is […]