DNA contains the "blueprint" for haemoglobin (the material that makes up genes). An individual typically has four genes that produce the alpha protein, also known as the alpha chain. The beta chain is encoded by two additional genes.
<h3>Describe the mechanism.</h3>
The beta-globin protein is made using instructions from the HBB gene. Red blood cells include a bigger protein called haemoglobin, of which beta-globin is a part (or subunit). Hemoglobin in adults typically has four protein components: two subunits of beta-globin and two subunits of an alpha-globin protein, which is created by the HBA gene. Each of these protein subunits is joined (bound) to a heme, a molecule with iron in its centre that can bind to one or more iron-containing molecules.molecule of oxygen Red blood cells' haemoglobin attaches to oxygen molecules in the lungs. These cells subsequently circulate through the bloodstream, supplying tissues all over the body with oxygen.
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Answer: The relative age of a rock, then, is its age in comparison with other rocks. ... The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. The fault cuts through all three sedimentary rock layers (A, B, and C) and also the intrusion (D)
Explanation: The relative age of a rock, then, is its age in comparison with other rocks. ... The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. The fault cuts through all three sedimentary rock layers (A, B, and C) and also the intrusion (D)
A model is a way of describing natural phenomenon that scientists uses to make various prediction.
Explanation:
A model is said to be good if it is both accurate as well as easy to understand which makes powerful as well as simple. Most of the models have certain approximation those are necessary for describing a model. As the observations are not exact so there may be little difference between what we observe. Models which are simple increase the accuracy and becomes superior in nature as well.
There are certain limitation of model such as , most of the model cannot explain the complex natural phenomena. For example when we want to measure distance it becomes difficult ,in the model we can represent earth as a sphere but it is difficult to show variation in distance as there are valleys mountain ranges and other features.
Answer: I think B.
Explanation: A and D make no sense, and I just learned about photosynthesis and animals or plants need for water cannot decrease.
The answer is <span>b. more harmful uv rays will reach the earth's surface.
An ozone layer is present in stratosphere serving as a filter from harmful UV rays of the Sun. Thus, if the ozone layer is depleted, UV rays will reach the Earth's surface. UV rays are able to affect animal skin causing cancer and eyes causing cataracts, blindness, and other eye diseases. Plants are also affected by UV rays.</span>