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AVprozaik [17]
1 year ago
6

QUESTION 1:

Biology
1 answer:
Vikentia [17]1 year ago
3 0
I think it’s true i think and D
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Earth's mantle plays an important role in the evolution of the crust and provides the thermal and mechanical driving forces for plate tectonics. Heat liberated by the core is transferred into the mantle where most of it (> 90%) is convected through the mantle to the base of the lithosphere.
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Both myoglobin and hemoglobin exhibit cooperative binding to oxygen. True or False
lys-0071 [83]

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False.

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An Haemoglobin molecule  is made up of 4-polypeptides, with each of the polypeptide chain containing an haem group. These haem group can bind with one oxygen atom each.

T<u>he binding of the first oxygen atom  by the first haem group weakens the tertiary protein   structure  of  Quaternary structure  Hb, thus it makes it easier for the second Oxygen atom to bind faster, and the 3rd oxygen very fast and the 4th oxygen atom the fastest.These accelerated binding of the oxygen atoms, facilitated by the first binding O2, is called cooperative binding.It aids oxygen binding capacity and tranport functions  of Hb,</u>

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<u>Myoglobin is an oxygen storage protein in  muscles, and not oxygen carrying molecule, It releases  stored O2 only in condition of low oxygen supply</u>.It has   one haem group in its molecule.Therefore its structural features can  not  carry out  cooperative binding.

6 0
2 years ago
Invasive species always have a negative impact on an ecosystem. <br><br> A) True <br> B) False
Ganezh [65]
i think false because they can help with another animal and there population decrease
8 0
3 years ago
The phase in the life cycle of a plant that produces spores​
DanielleElmas [232]

Answer:

Plants have two distinct stages in their lifecycle: the gametophyte stage and the sporophyte stage. After reaching maturity, the diploid sporophyte produces spores by meiosis, which in turn divide by mitosis to produce the haploid gametophyte. The new gametophyte produces gametes, and the cycle continues.

Explanation:

6 0
3 years ago
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