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BARSIC [14]
4 years ago
5

Unidirectional valves that prevent the blood from flowing backward are found in the

Biology
1 answer:
Allushta [10]4 years ago
3 0

The answer is veins.  These venous valves prevent the backflow of blood  in these vessels. This is because blood in the veins has lower pressure,  because it is flowing back to the heart, and therefore can be overcome by forces such as gravity and pull. The valves are similar in structure to semilunar valves of the heart.  






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What happens to the centrosome during interphase?
Alex787 [66]

Answer:

During interphase, centrosomes are duplicated.

Explanation:

Interphase is one of the two phases of cell cycle (other being mitotic phase).

Interphase is characterized by cell growth and DNA replication. It is subdivided into:

• G1 phase (the first gap phase) -  the cell grows and becomes larger and copies organelles

• S phase – DNA and microtubule-organizing structure-centrosome are duplicated.  

• G2 phase - proteins and organelles are formed.

G2 phase is followed by the beginning of mitotic phase.

6 0
3 years ago
Why do infants have a greater need for water than older humans?
Firlakuza [10]
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4 0
4 years ago
In this lab, you will go on a virtual fishing trip,
777dan777 [17]

Answer:

How does a dichotomous key help you identify unknown specimens based on their traits?

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3 0
3 years ago
Which scientific area is a major force in shaping modern classification methods
IgorC [24]
The writer could assert Taxonomy. Which is responsible for many scientific classifications and influences in various field of life sciences or biology.  Evidences that Taxonomy uses to group or categorizes species range from <span><span>
1.       </span>"Fossil Records</span> <span><span>
2.       </span>Comparative anatomy</span> <span><span>
3.       </span>Comparative embryology</span>
<span>4.       Biochemical information</span> <span><span>
5.       </span>Cellular structure</span> <span><span>
6.       </span>Behavior</span>"
We also suggest that taxonomy has played various roles mainly in many aspects in Zoology, Botany, Anatomy and Physiology –aspects that include animal and human structures and functions. As the biotic community is so diverse it is classified to Biodiversity and the existence of properly assorting by set standard.




8 0
3 years ago
Heartburn results when the acidic contents of the stomach regurtitate into the esophagus
matrenka [14]
Heartburn is a burning discomfort that is generally felt in the chest just behind the breastbone.  The burning sensation is caused when harsh stomach juices come in contact with and irritate the delicate lining of the esophagus.
5 0
4 years ago
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