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Mars2501 [29]
2 years ago
7

I need help with this one question

Biology
2 answers:
Umnica [9.8K]2 years ago
6 0

Answer:

b

Explanation:

Lisa [10]2 years ago
5 0

Answer:

Yes B

Explanation:

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HURRY PLZ!!!
PolarNik [594]

Answer:

The correct answer is "greater cost and lower usage" - in fact, the cost is becoming more and more lower and the  usage is increasing (those two are actually not unconnected).

Explanation

its c

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3 years ago
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WILL GIVE BRAINLIEST!!!
allsm [11]

Answer:

D.

Explanation:

A 'common ancestor' on a cladogram is all of those points where your lines come down and meet the primary line at the bottom.

In this case, your most recent common ancestor is at the point connected to the crocodile. All species at or past that point have that common ancestor, which include only the crocodile and the bird.

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3 years ago
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What ions, ATP, and neurotransmitters are used in muscle contraction and where are they used??
vivado [14]

Answer:

Hiya there!

Explanation:

ATP then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site. ATP can then attach to myosin, which allows the cross-bridge cycle to start again; further muscle contraction can occur.

acetylcholine : Skeletal muscle contraction and changes with exercise. (A) Neurotransmitter (acetylcholine, ACh) released from nerve endings binds to receptors (AChRs) on the muscle surface.

The muscle contraction cycle is triggered by calcium ions binding to the protein complex troponin, exposing the active-binding sites on the actin. As soon as the actin-binding sites are uncovered, the high-energy myosin head bridges the gap, forming a cross-bridge.

Credit sourced from "bio.libretexts.org"

Hope this <em><u>Helped!</u></em> :D

4 0
2 years ago
The process of accretion can enlarge the size of a continent along its edge. Where does the new land come from?
photoshop1234 [79]

Answer: A. cooled and hardened lava from volcanoes

C. sediments deposited by rivers and ocean currents

An accretion is a process in which new materials are added to a tectonic plate or landmass. This process causes the enlargement of the landmass. The materials being added includes sediments, lava from volcanic eruptions and other materials from other sources.  

The process of accretion can enlarge the size of a continent along its edge. The new land comes from the cooled and hardened lava from volcanoes and other reason is sediments deposited by rivers and ocean currents.  


4 0
3 years ago
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If you have a compound that directly injects a pair of electrons into complex III of the electron transport chain during aerobic
hammer [34]

Answer:

A) 6

Explanation:

Complex III of the electron transport chain transfers four protons across the membrane during aerobic respiration, per pair of electrons. In the other hand, complex IV is responsible for transporting two protons (per pair of electrons) across the membrane.

If the given compound injects a pair of electron into complex III,  four protons will accumulated due to complex III activity and then two more protons as these electrons move forward to complex IV. This means a total of 6 protons being transported to intermembrane space.

5 0
3 years ago
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