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saw5 [17]
4 years ago
5

The two major cell types in a sponge's tissues are

Biology
1 answer:
Delvig [45]4 years ago
3 0

Answer: B. collar cells and amoebocytes

The collar cells have a funnel like collar and a flagellum. Collar cells whip their flagella to make water go through the sponge. Then the water brings nutrients and oxygen, while while also taking out waste and carbon dioxide.

Amoebocytes first deliver nutrients from choanocytes to the other cells, giving rise to eggs. Then they bring phagocytized sperm from choanocytes to eggs.

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Decussation of pyramids refers to crossover of major motor tracts in the ________ region of the brain
Goshia [24]

The decussation of pyramids refers to crossover of major motor tracts in the medulla oblongata region of the brain.

<h3>What is medulla oblongata?</h3>

The medulla oblongata is the bottom most part of the brain.

It serves as the point where the brain and spinal cord connect, making it a key conduit for nerve signals to and from the body.

It also helps control vital processes like your heartbeat, breathing and blood pressure.

Thus, the decussation of pyramids refers to crossover of major motor tracts in the medulla oblongata region of the brain.

Learn more about medulla oblongata here: brainly.com/question/26723889

#SPJ12

8 0
2 years ago
Compare passive and active transport through the cell membrane, including energy use and concentration gradients.
sweet [91]
Passive transport vs active transport sounds like what it is. In passive transport, there is no energy needed to get the molecules across the cell membrane, whereas in active transport, energy is expended getting the molecules across the membrane. Basically in active transport the ATP in your cells gives one of it’s phosphates to the transport proteins in your cell membrane and it lets select molecules in. These molecules are moving through a concentration gradient during active transport(with the help of ATP), from an area of low concentration to an area of high concentration.
3 0
3 years ago
Researchers can use molecular homologies to __________
Sonja [21]

Answer:

Explanation:

Researchers can use molecular homologies to reveal the number of mutations in a particular sequence that has occurred in each species since they diverged from a common ancestor

8 0
3 years ago
If a person wanted their child to have 6 fingers on each hand, explain how you think a doctor would be able to accomplish this
ki77a [65]
I’d say plastic surgery, they can add an additional finger to the child that way. (This is an extremely odd question btw)
6 0
4 years ago
Read 2 more answers
7. Are the contour lines closer together on Able Hill or Baker Hill?​
rusak2 [61]
Baker Hill.


hope this helps

happy thanksgiving
4 0
3 years ago
Read 2 more answers
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