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Ipatiy [6.2K]
2 years ago
11

Cephlochordates have a backbone that extends from their tail to where? their gills their anus their heart their head

Biology
1 answer:
Lostsunrise [7]2 years ago
5 0
Pretty sure it’s to their neck.
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Devices used to observe a solar eclipse _____ the light that reaches your eyes.
tatuchka [14]

Answer:

The eclipse can only be viewed safely through a telescope using specialist solar filters. Solar viewer (also known as solar viewing glasses or solar eclipse glasses) are special eyewear designed for direct viewing of the Sun.

8 0
2 years ago
If you wanted to stay 20 feet below the surface of the water, what kind of buoyancy would you need to have? Positive, Negative o
Allushta [10]

Answer:

It depends what kind of water.

Explanation:

Salt water:

You would need a negative buoyancy.

Fresh water:

You would need a neutral buoyancy.

Please let me know if I am wrong!

3 0
1 year ago
When a neuron fires and its electric charge travels down the axon, causing neurotransmitters to be released by the neuron's term
marta [7]

Answer:

When a neuron fires and its electric charge travels down the axon, causing neurotransmitters to be released by the neuron's terminal buttons, an <u>action potential</u> occurs.

Explanation:

An action potential, commonly termed as impulse, can be described as messages which are transferred in electrical form. Action potential are caused due to different electric charges. An action potential is generated by  a stimulus which causes transfer of sodium ions into the axons resulting in depolarization of the neuron. To overcome this, potassium ion will enter the cell and an action potential will be generated.

The action potential causes release of the neurotransmitters so that signal messages could be transferred.

6 0
2 years ago
Do you think true water-conducting tissue is a derived character of either embryophytes or green algae? Why or why not?
ludmilkaskok [199]

Answer:

i think true water-conducting tissue is a derived character of green algae?

Explanation:

WHY?

Many characteristics of land plants also appear in algae like both are multi cellular, euks, photosynthetic autotrophs so are brown, red, and certain green algae, plants have cell walls made of cellulose and so do green algae

However, charophytes are the only present day algae that share these traits with land plants

1.Rings of cellulose-synthesizing proteins (circular rings of proteins in plasma membrane that make cellulose of cell wall)

2.Structure of flagellated sperm

3.Formation of a phragmoplast ( group of microtubules known as phragmoplast formes b/t daughter nuclei of a dividing cell, giving rise to a cell plate making cross wall that separates the daughter cells)

Comparisons of both nuclear and chloroplast genes point to charophytes as the closest living relatives of land plants

Land plants are not descended from modern charophytes, but share a common ancestor with modern charophytes

WHY NOT?

The origin of embryophytes, as these multicellular plants arose and conquered the land, was a pivotal event in the history of life on earth. Without embryophytes, there would be no animals or humans surviving on the land portion of our planet. The provide food, habitat, energy, oxygen, protection, and numerous vital other functions for the world's creatures. Human beings also benefit from the aesthetic beauty, medicines, and innumerable products derived from these diverse plants.

8 0
1 year ago
In a resting state, sodium (na+) is at a higher concentration outside the cell and potassium (k+) is more concentrated inside th
Anika [276]
The sodium levels increase inside the cell during action potential. Opposite to resting state, depolarization is the shift of electrical charge resulting in positive charge inside the cell. Depolarization is the start of cell-to-cell communication and other necessary physiological functions of an organism.
5 0
1 year ago
Read 2 more answers
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