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Dvinal [7]
3 years ago
11

In humans, having wet earwax is a dominant trait. having dry earwax is recessive.

Biology
1 answer:
Mice21 [21]3 years ago
7 0
His phenotype would be dry earwax since he carries 2 dry earwax alleles
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What are the lipids that contribute to the structure and function of the cell membrane?
siniylev [52]

Solution:

Phospholipid lipids is that contribute to the structure and function of the cell membrane.

Lipids all have one thing in common - they do not mix well with water. You can see this quite well if you try to combine oil and water. No matter how much or how hard you shake them together, they remain separated. This can be useful for organisms. For example, ducks produce lipids in their feathers, allowing the water to roll right off their backs and helping the ducks stay afloat.

Phospholipids are made up of two fatty acids (long chains of hydrogen and carbon molecules), which are attached to a glycerol 'head.' The glycerol molecule is also attached to a phosphate group, and this is the hydrophilic part of the molecule. The 'tail' ends of the fatty acid chains opposite the glycerol is the hydrophobic part of the molecule

The most important function for a phospholipid is to form the phospholipid bilayer. In this bilayer, the phospholipids are arranged so that all the hydrophillic heads are pointing outward and the hydrophobic tails are pointing inward. This arrangement comes about because the areas both outside and inside your cell are mostly water, so the hydrophobic tails are forced in.

THis is the required answer.

7 0
3 years ago
g 20. Name two bones connected by an interosseous membrane found in the crus and/or sural region. Which one is the medial bone
slamgirl [31]

Answer:

Tibia and fibula. Tibia (medial bone)

Explanation:

The tibia is the medial bone of the lower leg (it is the second-largest bone next to the femur), whereas the fibula is the lateral bone of the lower leg. The tibia functions to transmit the majority of the force in the lower leg. The tibia articulates at the proximal end with the femur and fibula; where this bone (tibia) articulates at the distal end with the fibula and the talus bone of the ankle. The tibia and fibula are connected via an interosseous membrane, which is a thin sheet of connective tissue that spans the space between two bones.

8 0
2 years ago
Think of what you have learned about the cell theory and stem cell research. How did the development of the cell theory lay the
Sergeu [11.5K]

Answer:

Why is it important to learn about stem cells and stem cell research?

Researchers hope stem cell studies can help to: Increase understanding of how diseases occur. By watching stem cells mature into cells in bones, heart muscle, nerves, and other organs and tissue, researchers may better understand how diseases and conditions develop.

How does stem cell research affect society?

Research with embryonic stem cells may lead to new, more effective treatments for serious human ailments and alleviate the suffering of thousands of people. Diseases such as juvenile diabetes, Parkinson's disease, heart failure and spinal cord injuries are examples.

3 0
2 years ago
Which statement best describes the relegation ship between proteins and nucleus acids
Novosadov [1.4K]

Answer:

The central dogma of molecular biology best describes the relationship between proteins and nucleic acid.

Explanation:

Nucleic acid such as DNA is the repository of genetic information in most organism.

          The genetic information stored in DNA is Transferred to RNA by transcription which deals with the the production of mRNA from DNA.

        The mRNA then undergo translation to transfer its own own genetic information in form of codons to specify amino acids of a protein molecule.

        Thus the Central dogma of molecular biology relates proteins and nucleic acids.

   

4 0
3 years ago
Which of the letters above best models a molecule of water moving into the membrane via an aquaporin?​
nika2105 [10]

Answer:

Letter B.

Explanation:

Aquaporins, also known as "water channels," are the main transport of water through the membranes of plant, animal, and bacterial cells. These channels allow the water to travel into and within cells and, at the same time, exclude the passage of ions and solutes.

What makes letter B the correct answer, is the form of transport and shape of the channel that allow water according to the osmotic gradient. In this model, letter A shows simple diffusion, while C and D seem to illustrate gated channels.

3 0
3 years ago
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