Answer:The North frigid zone, between the Arctic Circle 66.5° N and the North Pole 90° N. Covers 4.12% of Earth's surface. The North temperate zone, between the Tropic of Cancer 23.5° N and the Arctic Circle..
Explanation:
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C) <span>is an alternation of generations life cycle.</span><span> Organisms with this type of life cycle include plants, algae, and some protists.</span>
Of the four globins that make up hemoglobin, two are identical and called alpha globins, and the other two are called beta globins and are also identical.
<h3>Structure of Haemoglobin</h3>
- Each of the four subunits of hemoglobin has a polypeptide chain and a heme group.
- The iron protoporphyrin IX prosthetic heme group, which is connected to a polypeptide chain with residues of 141 (alpha) and 146 (beta) amino acids, is present in all hemoglobins.
- A histidine's N is linked to the ferrous iron of the heme. A polypeptide chain phenylalanine of the porphyrin ring wedges it into its pocket.
- Alpha and beta chains, two varieties of the polypeptide chains that make up adult hemoglobin, are comparable in length but have different amino acid sequences.
- Both adult and embryonic human hemoglobins have the same alpha chain.
To learn more about Haemoglobin refer to:
brainly.com/question/13152679
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There are choices for this question namely:
a) "Exhale forcefully while the chest tube is being removed."
b) "While the chest tube is being removed, raise your arms above your head."
c) "During the removal of the chest tube, do not move because it will make the removal more painful."
<span>d) "When the tube is being removed, take a deep breath, exhale, and bear down."
The correct answer is "when the tube is being removed, take a deep breath, exhale, and bear down". This is called a Valsalva maneuver and this functions to prevent the air from leaking back to the pleural space and eventually prevent pneumothorax. After which, a clean, air tight, dressing shall be applied to the wound.</span>
Answer:
750
Explanation:
30% of 2,500 is 750, therefore 750 calories is the maximum number one should get from fat each day.
