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meriva
3 years ago
9

Which of the following is NOT a method that maintains lymph flow? Which of the following is NOT a method that maintains lymph fl

ow? valves in lymph vessel walls skeletal muscle contraction capillary smooth muscle contraction breathing
Biology
1 answer:
exis [7]3 years ago
7 0
<h2>Capillary Smooth Muscle Contraction</h2>

Explanation:

  • Blood flows through blood vessels, which form the closed system called the circulatory system. Like a system of roads, the circulatory system has its highways, back roads, and alleyways, which we call arteries, veins, and capillaries
  • Capillaries are the alleyways that extend and branch into every tissue of your body, ensuring that every cell has a blood supply. It is here, in the capillary beds, that your cells pick up oxygen and nutrients and drop off carbon dioxide and wastes
  • Muscles are composed of two major protein filaments: a thick filament composed of the protein myosin and a thin filament composed of the protein actin. Muscle contraction occurs when these filaments slide over one another in a series of repetitive events
  • All muscles contract as a result of interaction between special proteins within the myocytes. Skeletal, cardiac, and smooth muscle cells synthesize the contractile proteins actin and myosin, which are needed for muscular contraction

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The fossil presence of anatomically modern humans in ________ demonstrates that our ancestors were capable of substantial water
Vsevolod [243]

Answer:

The correct answer is - Africa.

Explanation:

Scientists found the fossils of modern humans called Mota an ancient man who lived around 40000 to 45000 years ago in Ethiopia. It was the first DNA isolated from Africa.

This DNA sample says that the Europeans have 6% of the DNA of this modern human, which suggests that there was substantial migration of people into Africa from Europe and the middle east by water crossings.

3 0
2 years ago
John and Jane are planning a family, but since each has a brother who has sickle-cell disease, they are concerned that their chi
kykrilka [37]

Answer: D

Explanation: They can be sure if they both take a blood test. There is a possibility both jane and john are carriers of sickle cell(AS), which makes it possible to have children with sickle cell disease. Also, both jane and john may not be carriers at all (AA), in that case none of their child will have sickle cell, likewise if either of them is AA, and the other is a carrier, none of their child will have sickle cell.

7 0
3 years ago
Through which of the following processes are plant communities taking over the ecosystem
amid [387]

Answer:

Climate disturbance

Explanation:

4 0
2 years ago
What does it mean that earlobe attachment is a continuous trait?​
mylen [45]

Answer:

If you decided that the continuous spectrum of earlobe shape was a more accurate way to describe the variation, you aren’t alone. Family and genetic studies show that earlobe attachment is actually not a simple trait, but rather a complex trait, affected by multiple genes and environmental factors.

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. What is a negative impact that bioengineered plants may have on the environment?
4vir4ik [10]
Enable plants to produce a wide range of recombinant proteins on a rapid timescale.
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