Answer:
Sonic Hedgehog.
Explanation:
Sonic hedgehog is a secreted protein that in humans is encoded by the SHH gene. It is the best studied ligand of the hedgehog signaling pathway, others being desert hedgehog (DHH) and Indian hedgehog (IHH). It plays a key role in the development of animals, from insects to mammals. In vertebrates, it is involved in organogenesis, including the growth of digits on limbs and the organization of the brain.
Sonic hedgehog has also been shown to act as an axonal guidance cue. It has been demonstrated that SHH attracts commissural axons at the ventral midline of the developing spinal cord. Specifically, SHH attracts retinal ganglion cell (RGC) axons at low concentrations and repels them at higher concentrations
Prokaryotic cells don't have a nucleus
The answer is Nuclear envelope.
Basically, the Nuclear envelope is an outer shell that protects the cell (which includes the dna) from any harmful things.
The stomach normally secretes acid that is essential in the digestive process and this helps in the breaking down of food during digestion. Acidity is responsible for ulcer, dyspepsia, heartburn and the formulation of the ulcer. One way to experiment on how the acid is neutralized is by using vinegar and starch.
The hues, tints, or tones that make up a monochromatic colour scheme are all variations of the same hue.
<h3>A monochromatic colour scheme is what?</h3>
- Colors that are monochromatic are all variations of a single hue, including tints, hues, and tones.
- Lighter and darker shades of the primary colour or hue will make up a monochromatic colour scheme.
<h3>What hues fall within the monochromatic category?</h3>
- Films shot in black and white are all considered monochromatic.
- Since black and white can be found at both ends of every colour, they can be used in a monochromatic design that is based on any colour.
<h3>Why do people use a monochromatic colour scheme?</h3>
Because they permit a wider range of contrasting tones that can be used to draw attention, establish focus, and assist readability, monochromatic colour schemes present potential in art and visual communications design.
learn more about monochromatic colour here
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