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CaHeK987 [17]
3 years ago
15

A structure that seems to serve no purpose in an organism is called: A.homologous B.vestigial C.dichotomous D.fossilized

Biology
2 answers:
nadya68 [22]3 years ago
7 0

Answer:

vestigial (Basically the answer is B)

Tom [10]3 years ago
4 0
B
Explain: because it's right
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Mendelian inheritance states that traits are determined when offspring receive for each trait from
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alleles

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What gloves work best for insulating against heat
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Multiple Select Question
Diano4ka-milaya [45]

The TRUE statements are 'proteins often have more than one transmembrane domain'; 'they are regions of a transmembrane protein that actually pass through the lipid bilayer' and 'they are usually shaped like alpha-helices'.

A transmembrane domain is a membrane-spanning region within a protein. The transmembrane domains are hydrophobic regions that can be inserted into the cell membrane.

The transmembrane domains are usually shaped like alpha-helices.

This secondary structure (alpha-helices) causes the amino acid R-groups to project radially, thereby these side chains can interact with each other.

Proteins need only a single transmembrane domain to be anchored to the membrane, but they often have more than one.

For example, Acyl-coenzyme A cholesterol acyltransferases 1 and 2 (ACAT1 and ACAT2)  have multiple transmembrane domains.

The transmembrane domains are regions of a transmembrane protein that actually pass through the lipid bilayer.

These domains contain amino acids with hydrophobic R-groups that pass through the membrane and interact with the hydrophobic tails of the fatty acid chains present in the lipid bilayer.

The transmembrane domains anchor transmembrane proteins to the lipid bilayer.

The interactions between amino acids of the transmembrane domains and fatty acids in the lipid bilayer help to anchor transmembrane proteins and stabilize the cell membrane.

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6 0
1 year ago
Salt marshes along the coast serve as a nursery site for juvenile fish including those that are important to the fishing industr
alex41 [277]

Given what we know, we can confirm that Salt marshes are an example of an ecosystem service.

<h3>What is an ecosystem service?</h3>

This describes situations in ecosystems that are beneficial to human life. This example describes the way in which salt marshes provide humans with a steady and stable source of fish that are important to the fishing industry.

Therefore, we can confirm that the Salt marshes are an example of an ecosystem service.

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6 0
2 years ago
Name and describe 3 major characteristics of vascular plants?
inessss [21]

Answer:

Roots. Roots are simple tissues that are derived from the stem of the plant.

Xylem. The xylem is tissue that transports water throughout the plant.

Phloem. The phloem is the plant's food transportation system.

:)

8 0
3 years ago
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