Answer:
Longitudinal waves have particle movement parallel to the direction of the energy.
Explanation:
A type of wave in which the particles in the medium move parallel to the direction of the propagation of the wave is known as a longitudinal wave. A sound wave traveling through air is an example of a longitudinal wave. Here, the particles vibrate back and forth in a direction parallel to the energy transport.
A type of wave in which the medium's particle movement is perpendicular to the direction of the propagation of the wave (or the direction of the energy transport) is known as a transverse wave. Transverse waves and longitudinal waves can travel through a solid medium. Longitudinal waves can travel through fluid mediums (liquid or gas) like air or water while transverse waves require a relatively rigid medium to transmit their energy.
Earthquakes generate both transverse and longitudinal waves that travel through the earth's solid structures. Only longitudinal waves can travel through the earth's core. An electromagnetic wave is produced by the vibration of charged particles and can transmit its energy through a vacuum. An example is light waves.
C I know this is hard but it’s easy
A cell membrane is selectively permeable because it only allows particles to move across them due to different concentrations. Molecules move from areas of low concentration to high concentration.The cell needs to control what enters and leaves. It needs to keep somethings in and other things out. However, only the Selectively cells can enter and go out of the cell! This is why the selectively permeable membrane is permeable!
A cell membrane (the outer casing or inner casing in a plant cell) is selectively permeable because some materials can pass freely through the cell membrane while others cannot.
Answer: The Lipid bi-layer of the cellular membrane allows simple molecules to pass through. However, for certain proteins, a special transportation mode is needed.
Answer:
Explanation:
The action of drugs on the human body is called pharmacodynamics, and what the body does with the drug is called pharmacokinetics. The drugs that enter the human tend to stimulate certain receptors, ion channels, act on enzymes or transporter proteins. As a result, they cause the human body to react in a specific way.
Answer:
Antibiotic Resistance
Explanation:
Antibiotic Resistance is when bacteria mutates or adapts to become resistant to antibiotics, wether by protecting the bacteria itself or limiting how the antibiotics can effect the body. This antibiotic Resistance can happen from using too many antibiotics, or using antibiotics but not having a high enough dose (so all the bacteria isn't killed). This can cause much more serious infections, like pneumonia and meningitis, to happen, and they can last longer, as they may not immediately respond to treatment. These can also spread to people who don't have a problem with antibiotic Resistance, but will get the antibiotic resistance bacteria which can mess with the other bacteria in their body, making them antibiotic resistant, which turns into a cycle of spreading bacteria and becoming resistant.