When the hormone insulin is released into the bloodstream, what form of cell-to-cell signaling is being used?a.endocrine

b.paracrine

c.neuronal

d.contact-dependent?

Answer:

The correct answer would be bones.

X-rays are high energy electromagnetic waves which have an ability to penetrate most of the biological tissues.

In the X-ray machine, a beam of high energy X-rays is passed through the filters and subject and then fall on the detector or photographic film to produce X-ray.

Dense tissues like bone, teeth, tumors et cetera blocks or stops most of the X-ray particles from reaching the detector or photographic film.

It forms glowing pictures on the X-ray film or photographic film.

The denser the material the brighter the image will be formed on the photographic film.

Receptors that provide animals with information from the external environment are located in the:

1. ears
2. skin
3. tongue
4. eyes
5. nose

These receptors are known as sensory receptors as they perceive the changes that occur in the external environment and transmit the information to the nervous system.

The name of these receptors located in the respective organ is as follows :

1. Ear - auditory receptor

2. Skin - mechano (cutaneous) receptors

3. tongue - taste receptors

4. eyes -  Photoreceptors

5. nose - olfactory receptors

An example of how it detects the changes in the external environment can be understood as follows :

The substances that have odor produce chemicals known as odorants which bind to the olfactory receptors located in the nose which then produces electric signals which are transmitted via the nerves to the olfactorybulb in the brain and the smell is detected.

Answer:

ears

skin

tongue

eyes

nose

Explanation:

I just did this

When Charles Darwin stepped ashore on the Galapagos Islands in September 1835, it was the start of five weeks that would change the world of science, although he did not know it at the time. Among other finds, he observed and collected the variety of small birds that inhabited the islands, but he did not realize their significance, and failed to keep good records of his specimens and where they were collected.