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kompoz [17]
3 years ago
8

Research the name of the receptor of the five senses and describe how the receptor works.

Biology
1 answer:
tresset_1 [31]3 years ago
7 0

Answer:

Photoreceptors - Eyes

Phono receptor - Ears

Olfactory receptors - Nose

Gustatory receptors - Tongue

Thermoreceptors - skin

Explanation:

Each receptor has sensory neurons at their tips. On receiving the information from the surrounding the start a nerve impulse. This is carried to the brain through the spinal cord. The information is transferred to different parts within the brain using relay neurons. After that, the response is again sent using nerve impulses, but this time through motor neurons. This information is passed to the effector where the response would be observed.

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Which statement describes how enzymes and substrates are related? The enzyme influences the speed of change from substrate to pr
azamat

Correct answer: A). The enzyme influences the speed of change from substrate to product

The enzymes are the biological catalyst that speed up the rate of chemical reactions by decreasing the activation energy of the reaction pathway.

They increase the speed of change of substrate to the product and it remains unchanged in the reaction. Hence, it can be used again and again.

Enzymes are highly specific in nature, only a specific substrate binds to the enzyme's active site. Hence, a particular enzyme is required to catalyze a reaction.






3 0
3 years ago
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Why does water form hydrogen bonds?
Vinvika [58]

Answer:water

Explanation:because water is made ho2

8 0
3 years ago
Describe how changes in an ecosystem can affect the organisms that live there.
Anni [7]
Most plants and animals live in areas with very specific climate conditions, such as temperature and rainfall patterns, that enable them to thrive. Any change in the climate of an area can affect the plants and animals living there, as well as the makeup of the entire ecosystem
7 0
3 years ago
What substances transported by plants 1) xylem vessels and trachieds? 2) sieve tubes of phloem?
Licemer1 [7]

Answer:

Explanation:

xylem vessels transport water and nutrient from roots to the other parts of the plant

trachieds are elongated in the xylem of vascular plant that play role in the transport of water and mineral salt

seive tube are the elongated living cells of the phloem in the flowering plant  they are the conduits of food (mostly sugar) transport

5 0
2 years ago
Describe one observation that supports the theory that mitochondria and chloroplasts originated as independent prokaryotic organ
olga nikolaevna [1]

Answer:

  • Both organelles present their genetic material.
  • Both organelles divide by binary fission
  • Both organelles present a double membrane, the internal one looks identical to the bacterial membrane, while the external membrane looks like the eukaryotic one.
  • In the internal membrane are placed the energy centers, just as it occurs in bacterias membrane.
  • The sizes of the organelles are similar to the size of some procaryotes

Explanation:

The endosymbiotic theory essentially states that some organules of the eukaryotic cells, such as mitochondria and chloroplasts, were once free-living bacteria. Probably, these organisms must have been phagocytized but not digested by another cell. These bacteria were able to adapt to their host, establishing a bond of dependence among each other.

Both organelles have many similarities with other free-living bacteria. For this reason, the theory states that chloroplasts derivate from cyanobacteria (because they both absorb sunlight, store the energy in ATP, and produce organic molecules) and that mitochondria derivate from rickettsias (because they produce ATP in the same way, by using the Krebs Cycle and Oxidative Phosphorylation).

This theory is supported by a few characteristics of the chloroplasts and mitochondria that suggest that they once were free cells. For example,

  • Both organelles present their genetic material. This DNI is independent of the cells´ DNA, is bi-catenary and circular, identical to the bacterial DNA, and very different from the one of the eukaryotic cells.
  • Both organelles divide by binary fission, not by mitosis, and can synthesize their ribosomes and organelles.
  • Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the bacterial membrane, while the external membrane looks like the eukaryotic one.
  • In fact, in this internal membrane are placed the energy centers, just as it occurs in bacterias membrane.
  • Finally, the sizes of the organelles are similar to the size of some procaryotes

3 0
3 years ago
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