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Fofino [41]
3 years ago
14

List the five classes of antibody heavy chains and provide one function for each.

Biology
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

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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PCR is a useful technique because
Tpy6a [65]
Hello,

PCR is a useful technique because it is used to amplify small segments of DNA.

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6 0
3 years ago
Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. The mutatio
yulyashka [42]

Answer:

B. The mutation results in a new, dominant allele

C. The mutation occurs in a gene that controls development and alters differentiation of a cell type during development.

D. The mutation occurs in a codon and alters the function of the final protein

Explanation:

All the above things will change the <u>ultimate expression</u> or phenotype by altering the proteins. Choices B, C, and D will all change the outer functioning.

Choice A only affects the rate of transcription, so it may go faster or slower, but the end product will be the same.

This part that doesn't look like it's one of the choices ("The mutation occurs in a portion of an intron not responsible for exon splicing.") would not affect phenotype, because introns are removed before the RNA is sent out.

Choice E says that the amino acid sequence is unchanged, meaning the protein final product will be the same and the expression will not change.

7 0
3 years ago
Why did Barro Colorado Island (formed from a large hill during the flooding of the Panama Canal in 1914) have dozens of species
ahrayia [7]

Answer:

The correct answer is option c.

Explanation:

In the Barro Colorado Island, the mentioned local population of the butterfly species went on to become extinct mainly due to the fragmentation of habitats and the loss of habitats. The host plant on which the butterflies fed could not grow and they started to decline in number and slowly became extinct. Due to this the species of the butterfly also would have got extinct because of the lack of food.

4 0
3 years ago
Which gas is the most abundant in Earth's atmosphere?
spayn [35]

Answer:

Nitrogen

Explanation:

nitrogen, which accounts for about 78% of the mass of dry

thoughtco.com

4 0
2 years ago
Read 2 more answers
4. Analyze what would happen to this ecosystem if one of the primary consumers was removed from the ecosystem?
Natalka [10]

Answer:

Due to a primary consumer being taken out there will be more producers and less secondary consumers because of the new tertiary consumer eating them and the lack of food for the secondary.

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3 years ago
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