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Iteru [2.4K]
3 years ago
6

intrusive igneous rock forms when the cooling of magma takes place fast on the top of the Earth's surface. A. True B. False

Chemistry
2 answers:
-BARSIC- [3]3 years ago
5 0

Answer:

A

Explanation:

True igneous rock forms cooling of magma fast on the top

Gnesinka [82]3 years ago
3 0

Answer:

The answer is A. True

Explanation:

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B. Be

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Select all statements that correctly describe hemoglobin and myoglobin structure. a. Molecular oxygen binds irreversibly to the
DIA [1.3K]

Answer:

c. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.

e. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron ( Fe ) (Fe) atom.

f. Hemoglobin is a heterotetramer, whereas myoglobin is a monomer. The heme prosthetic group is entirely buried within myoglobin.

Explanation:

The differences between hemoglobin and myoglobin are most important at the level of quaternary structure. Hemoglobin is a tetramer composed of two each of two types of closely related subunits, alpha and beta. Myoglobin is a monomer (so it doesn't have a quaternary structure at all). Myoglobin binds oxygen more tightly than does hemoglobin. This difference in binding energy reflects the movement of oxygen from the bloodstream to the cells, from hemoglobin to myoglobin.

Myoglobin binds oxygen

The binding of O 2 to myoglobin is a simple equilibrium reaction:

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3 years ago
A functional group introduces heteroatoms into a carbon chain to increase
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reactivaty

Explanation:

here you go for the answer

5 0
3 years ago
draw the structure of two acyclic compounds with 3 or more carbons which exhibits one singlet in the 1H-NMR spectrum
loris [4]

Answer:

attached below

Explanation:

Structure of two acyclic compounds with 3 or more carbons that exhibits one singlet in 1H-NMR spectrum

a) Acetone CH₃COCH₃

Attached below is the structure

b) But-2-yne (CH₃C)₂

Attached below is the structure

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Which is a nonmetal that becomes isoelectronic with argon<br> when it forms its most common ion?
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