virulent phages kill the cell to release their progeny (although filamentous phages are able to export progeny without cell lysis). Temperate phages may exert an effect similar to virulent phages, but they may also integrate in the
Polychlorinated biphenyls (PCBs) have been banned but are still found in the environment and have been shown to break down the blood-brain barrier and gut barrier. Chronic exposure to arsenic in drinking water breaks down the lung barrier. Chronic toxic exposure can deplete the glutathione system...
Neurons are the cells that process and transmit information in the brain. Each cell has two connectors, the axon and dendrite. The axon of one neuron connects with the dendrite of another at a junction or synapse. Special chemicals called neurotransmitters help transfer the electrical impulse acros...
Many traits that have been shown to be involved in bacterial cooperation and virulence are coded by mobile elements, such as traits that are capable of breaking down toxins in the local environment (Knothe et al., 1983; Philppon et al., 2002; Lee et al., 2006; Ellis et al., 2007) ...
Caused when ablood clot(typically from a deep vein in the leg) breaks off and goes into the pulmonary arteries of the lungs. This causes shortness of breath and low oxygen levels because the pulmonary arteries deliver blood into the lungs to distribute oxygen throughout the body, which cannot...
Partners note that parabens are linked to breast cancer cell growthand can even block the effects of chemotherapy drugs. Furthermore, a few types of parabens have been banned by the European Commission due to their harmful effects, although these are still allowed in products in the United ...
The large intestine absorbs water from waste before it exits the body. Digestion starts in the mouth where saliva breaks down macromolecules and the...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
If facilities lack adequate safety protocols, there is a constant risk of exposure to hazardous substances to workers as well as nearby communities. For example, the burning of wiring and cables increases the concentration of dioxins — toxins known to increase the risk of cancer if inhaled by ...
4.3. When does sperm production start in the male? 4.4. How far does a human sperm cell travel to fertilize an egg? 4.5. How fast can a sperm travel? 4.6. Why does the human sperm cell have lots of mitochondria? 4.7. What is the function of the head of the sperm? 4.8. What is...
Free radicals are produced when the body breaks down foods for use or storage. But they are also produced when we expose to tobacco smoke, radiation, and air pollution. These unstable molecules make their way through our bodies, scavenging cells to try to snatch missing pieces—electrons. They...