Transport of a compound across a cell membrane (down a concentration gradient) was measured at several concentrations. The presence or absence of ATP had no effect on the transport of this compound. ... Why are the lipid bilayers in cells called "selectively permeable"? They are permeable to some substances but not others.
The rapid leaf movements resulting from a response to touch (thigmotropism) primarily involve<u> potassium channels.</u>
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- Thigmotropism is a directional growth movement that develops in response to a touch stimulation through the mechanosensory system.
- Plant biologists have also discovered thigmotropic reactions in blooming plants and fungus, while thigmotropism is often found in twining plants and tendrils.
- A directed growth movement known as thigmotropism happens in response to touch. Typically, twining plants and tendrils that coil around supports exhibit thigmotropism.
- The trigger for the geotropism process is gravity. A plant organ's directional response to physical contact or touch with a solid object is known as thigmotropism.
- The induction of some pattern of differential growth typically results in this directional reaction.
- The climbing tendrils of some plants, such the clinging fern, provide a clear illustration of this phenomena.
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One way the muscle cell is different from a plant cell is the plant cell has a pigment called chloroplast which gives it its green color.
The most likely source of thermal pollution in a river ecosystem would be <span>the use of water as a </span>coolant<span> by </span>power plants<span> and industrial manufacturers</span>. One harmful effect that this type of pollution has is a sudden change in water temperature (either a rapid increase or decrease) known as "thermal shock."<span>, killing fish and other native animals.
></span>Thermal pollution<span> is defined as the degradation of </span>water quality<span> by any means that changes ambient water </span>temperature<span>.</span>
