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Oksana_A [137]
3 years ago
10

(30pts.)

Biology
2 answers:
disa [49]3 years ago
8 0

Answer:

About 30 million American adults have some degree of lactose intolerance by age 20. so i would say 50 million

Explanation:

makkiz [27]3 years ago
6 0
I believe its 10 million
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Using complete sentences, compare and contrast the terms living and biotic. In your response, illustrate using examples and appr
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Biotic factors are all of the “alive” factors in the environment which includes all living organisms. Abiotic factors are opposite, are “non alive” factors which may include water,soil,air,rocks,and etc.
6 0
2 years ago
Occasionally earthquakes occur as a result of collisions along oceanic-continental convergent boundaries. Where do these earthqu
kirza4 [7]

On land but close to oceans. Thus, option "A" is correct.

<h3>What is an earthquake?</h3>

Earthquakes occur as a result of collisions along oceanic-continental convergent boundaries.

The majority of the earthquakes occur alongside the Ring of Fire of the Pacific Ocean. The Ring of Fire is found in the basin which is a land area found close to the coastlines of the ocean. This validates its occurrence on land but close to the oceans.

Thus, option "A" is correct.

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2 years ago
List the five classes of antibody heavy chains and provide one function for each.
Lesechka [4]

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.

8 0
3 years ago
Nêu đặc điểm cấu tạo hóa học của ADN
Assoli18 [71]

Answer:

Thailand

Explanation:

3 0
2 years ago
Many receptor tyrosine kinase pathways have mapk as a downstream signaling component. mapk can phosphorylate target proteins. wh
Lapatulllka [165]

A protein kinase that is specific to the amino acids serine and threonine is known as a mitogen-activated protein kinase (MAPK or MAP kinase; also known as a serine/threonine-specific protein kinase).

<h3>Mitogen-activated protein kinase :</h3>

A small number of cell surface receptors can ultimately generate a large intracellular response due to activation of kinase cascades.

In order to trigger an appropriate physiological response, such as cellular proliferation, differentiation, development, inflammatory reactions, and death in mammalian cells, MAPK pathways relay, amplify, and integrate information from a variety of stimuli.

Tyrosine phosphorylation, specifically numerous tyrosines on each RTK in the dimer, is how cross-linking triggers the tyrosine kinase activity in these RTKs. The term "cross-phosphorylation" refers to this action.

The activation of a MAPKKKK or MAPKKK by stimulation of plasma membrane receptors is the initial stage of signal transduction. The MAPKKK then phosphorylates two serine or threonine residues in the S/T-X5-S/T (X is any amino acid) motif of its activation loop, activating a downstream MAPKK.

Learn more about MAPK here:

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SPJ4

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2 years ago
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