Yes you can hope this helps you with your question good luck!
Explanation:
The division comprises a tremendous diversity of plants among its four subgroups: psilopsids, leafless and rootless primitive forms commonly known as whisk ferns (though not true ferns); sphenopsids, feathery leaved plants commonly called horsetails; lycopsids, low-lying plants called club mosses; and pteropsids,
B. is the correct answer. It makes sense too because vaccines are usually inserted in a vein, which is where the bloodstream is. With all of this medicine in your body, the virus will come into the body, the body will recognize what the virus is, sending out the antibodies from the vaccine into the bloodstream and all around, then the virus is dead. :)
Answer:
In the given case, the homogeneity of the protein is done. By performing, the technique of gel-filtration chromatography, the mass of the protein obtained is 60 kilodalton. When the chromatography is performed in the existence of urea, a protein of mass 30 kilodalton is obtained. The ratio between the two obtained mass is 60/30 = 2, thus, it shows that the protein comprises two subunits and each of them weighs 30 kilodaltons.
When the same technique of chromatography is performed in the existence of beta-mercaptoethanol and urea, a single protein of mass 15 kilodalton is produced. Now, the ratio is 30/15 = 2. Therefore, each subunit of the protein comprises two units of mass 15 kilodalton.
Hence, it shows that the protein is a tetramer of 15 kilodalton subunits and each subunit produces dimers of mass 30 kilodalton and is attached by disulfide bonds.
True
Explanation:
Inspiration is the process of inhaling air from the nose that reaches the lungs through respiratory tract. Expiration is the release of air from the lungs to the outside environment through the nose.
During inspiration, the ribs move up and out, diaphragm moves up or inferiorly, the external intercoastals contract and the thoracic cavity increases in volume for the air to come in. During expiration, the opposite of inspiration occurs. Both inspiration and expiration are related.