Answer:
A protein molecule present in the RBCs, which helps in the transportation of oxygen from the lungs to the different parts of the body and brings back carbon dioxide, that is, collected from different parts of the body back to the lungs is known as hemoglobin.
The general features of hemoglobin are that it comprises four molecules of protein in the form of globulin chains. In adults, the molecules of hemoglobin comprise two beta-globulin chains and two alpha globulin chains, while in infants and fetuses, the beta chains are least found, and is substituted by two gamma chains.
Each globulin chain comprises an essential iron-containing compound porphyrin, which is termed as heme. Together both iron and heme play an essential role in circulating oxygen and carbon dioxide in the blood. This iron gives the red appearance to the blood.
Answer:
Earth’s crust is pushed up in big folds or forced up or down in blocks. So your answer is "By earth's crust being uplifted." Please mark as brainliest, hope this helps!
The biological species concept is the most widely accepted species concept. It defines species in terms of interbreeding.
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A dog fulfilled the three points of the cell theory through the healing of the cuts it encountered when playing.
<h3>What is a Cell?</h3>
This is defined as the simplest or basic unit of life and the three points of cell theory include:
- All organisms are made of one or more cells
- The cell is the basic unit of all organisms.
- All cells come from existing cells.
The cut the dog had healed as a result of the formation of the cells from existing cells through mitosis thereby resulting in the healing.
Read more about Cell theory here brainly.com/question/1594446
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Solution:
Plant and animal cells both undergo in mitotic cell divisions. The main difference is that how they can form the daughter cells during cytokinesis. During that stage, animal cells form furrow or cleavage that gives way to formation of daughter cells. While, during telophase, plant cells phragmoplast forms in the center of the cell.
Animal cells have centriols that helps the organization of mitotic spindle and completion of centrioles. But plant cell don’t have centrioles.
Animal cells divide at anywhere and all the time while the plant cell is divide only in specialized region known as the meristems.
