<span>TRUE
The four bases in DNA are adenine, cytosine, guanine, and thymine.
These four are divided into two groups. The pyrimidines, the single-ring nitrogenous bases, is where thymine and cytosine is included. The purines, the double-ring nitrogenous bases, includes adenine and guanine.
Cytosine will only bond with guanine; they form three hydrogen bonds. Adenine will only bond with thymine forming two hydrogen bonds.
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The answer is. Isogamous fertilization
Most
often, antigens are composed of glycoproteins.
<span>An
antigen is a molecule with the possibility to induce an immune response. An
antigen is recognized inside the body by antibodies produced to match an
antigen and to come into contact with it. Antigens can be peptides (amino acid
chains), polysaccharides or lipids.</span>
Answer: Choose a disease and describe what steps the immune system has to fail for this particular disease to take hold. Choose a disease and describe what steps the immune system has to fail for this particular disease to take hold and cause an infection. Categories English.
Explanation:
Answer:
a
Explanation:
science is a systematical way to get a knowledge