Galaxies moving away from us will emit light that is redder than we would otherwise expect

The rapid leaf movements resulting from a response to touch (thigmotropism) primarily involve _____.

Svetach [21]

The rapid leaf movements resulting from a response to touch (thigmotropism) primarily involve potassium channels.

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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8 0

2 years ago

Which two animals are able to generate internal heat to maintain their body temperature in a coid environment

Dominik [7]

Parrots and Dogs are able to generate internal heat to maintain their body temperature in a coid environment. Parrots and Dogs are Endotherms. They generate most of the heat they need internally, when it's cold outside.

6 0

3 years ago

You expect interstitial endocrinocytes (interstitial cells of Leydig) to be rich in which of the following? Interstitial endocri

inna [77]

Answer:B) Rough endoplasmic reticulum

Explanation:

5 0

3 years ago

Activity: Create your own cell membrane. In your model, be sure to include the following: parts/structures function/use layers t

Gwar [14]

Explanation:

Lipids are composed of fatty acids which form the hydrobic tail and glycerol which forms the hydrophilic head; glycerol is a 3-Carbon alcohol which id water soluble, while the fatty acid tail is a long chain hydrocarbon (hydrogens attached to a carbon backbone) with up to 36 carbons.

Their polarity or arrangement can give these non-polar macromolecules hydrophilic and hydrophobic properties. Via diffusion, small water molecules can move across the phospholipid bilayer acts as a semi-permeable membrane into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds. The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing molecules of water to diffuse across the membrane along the concentration gradient.

Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers or at as doorways for other molecules to pass through. Cholesterol, which is comparatively rigid, anchors other molecules attached to the membrane, maintain membrane stability or structural integrity and aid in separating some lipids, helping with membrane fluidity at low environmental temperatures.

Remember, essential features:

lipid bilayer
cholesterols
proteins (cell markers and doorways)

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4 0

4 years ago

Explain how Rutherford's students knew that Thomson's model of the atom needed to change.

musickatia [10]

Answer:

Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup." Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

7 0

3 years ago