Antigens are proteins that are found on the surface of the pathogen and are viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles. Antigens are usually carried by proteins and polysaccharides, and less frequently, lipids but it also needs to be attached to a large carrier molecule which is usually a protein. When an antigen enters the body, the immune system produces antibodies against it. The Antigen stimulates the immune system to produce antibodies. YOUR WELCOME ;)
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I believe the answer would be:
Excess Vitamin A is most harmful to an embryo during the first and second months of pregnancy.
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Answer:
Explanation:
Types of Inorganic Compounds
The following section examines the three groups of inorganic compounds essential to life: water, salts, acids, and bases. Organic compounds are covered later in the chapter.
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Answer:
Signal the end of protein-coding sequences
Explanation:
The codons UGA, UAA, and UAG are known as stop codons. When the RNA is being translated to protein, and the RNAm reads those codons, it knows it has to end the protein sequence
<span>They are both important. Latitude, the lines that parallel the equator are very important in determining plant growth rates and which plants can even exist because latitude is strongly related to average temperature. Altitude acts like latitude only over a shorter scale, so an increase in altitude of 1,000 ft may act like a latitude change of 3-4 degrees pole-ward. Longitude, that series of lines, perpendicular to the equator is also important, and is more related to water supply in the form of precipitation, so it would surely influence the kind of plants present - like desert plants versus rain forest types. Environments that are warm and with more rainfall generally will support more plant growth than those that are cold with little rainfall.</span>
