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nikklg [1K]
3 years ago
15

Why is there a limit to the number of levels that a food chain can reach

Biology
1 answer:
Svetllana [295]3 years ago
7 0
Energy is lost at each trophic level.
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List the five classes of antibody heavy chains and provide one function for each.
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IgM, IgA, IgE, IgD and IgG

Explanation:

IgM functions in the initial response to offence.

IgA is important for protection of mucus membranes such as in saliva, sweat, tears and gastric fluid.

IgE is active during allergic reactions and defense against infections.

IgD is found on the surface of lymphocytes and is activated upon contact with antigens.

IgG forms part of the secondary response to antigen and is also responsible for newborn protection.

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What prevents a white dwarf from completely collapsing upon itself?
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Missense mutation is a type of point mutation where a single nucleotide is changed to cause substitution of a different amino acid. This in turns render the resulting protein non-functional.

In the case of sickle-cell disease, the sixth amino acid in the gene sequence, glutamate (GAG) is substituted with valine (GUA), due to Adenine nucleotide changed to Uracil nucleotide. Thus, missense mutation has occurred

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Which of these is the correct amino acid chain produced from the DNA template strand? F Arginine -Leucine -Proline -Asparagine -
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Letting go of regrets and past decision.

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