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alexandr402 [8]
3 years ago
8

Which feature distinguishes protostomes from deuterostomes?

Biology
2 answers:
Schach [20]3 years ago
5 0

Answer:

The key difference between protostomes and deuterostomes is the fate of the blastopore during their embryonic development

goldenfox [79]3 years ago
3 0

Answer:In Protostomes (“mouth first”), the mouth develops at the blastopore (Figure 3). In Deuterostomes (“mouth second”), the mouth develops at the other end of the gut (Figure 3) and the anus develops at the site of the blastopore. Protostomes include arthropods, mollusks, and annelids.

Explanation:

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pochemuha

Answer:

Deoxyribose

Explanation:

DNA stands for "deoxyribonucleic acid" because it has the sugar deoxyribose. It's named because it has one fewer oxygen than ribose. Be careful not to confuse the two sugars--ribose is in RNA, which stands for "ribonucleic acid."

Attached is a picture of the differences between the two sugars.

3 0
4 years ago
How does cell division impact us and all other organism on earth? Witch type of cell
yawa3891 [41]

Answer:

1st question:

Cell division is fundamental to all living organisms and required for growth and development. As an essential means of reproduction for all living things, cell division allows organisms to transfer their genetic material to their offspring.

2nd question:

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5 0
3 years ago
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Describe how blood pressure is measured using a sphygmomanometer
Goryan [66]

Answer:

A sphygmomanometer is a devices which is use to measure blood pressure. Sphygmomanometer is consist of rubber cuff (inflated) which is use to wrap around the arm and the dveice measures the pressure generated in the cuff.

Heart beats allows the blood to flow in the arteries and causes rise in the pressure, called systolic pressure and after thhis when pressure decreases, pressure is called the diastolic pressure.

The sphygmomanometer cuff get inflated with the systolic pressure and when valves are open the cuff releases the pressure. When cuff pressure become equal to systolic pressure, it creates blood flow turbulence and the sound can b emeasures by stethoscope. these sounds are notived and cuff pressure is meausred. The blood flow turbulence will be created till the pressure of cuff reaches below the diastolic pressure. When the blood flow sound stops, it indicates the begining of diastolic pressure.

So, this is how a sphygmomanometer measures blood pressure.

6 0
4 years ago
The sarcomere shortens when the myosin heads of the thick filaments. True or false
ahrayia [7]

Answer:

True

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A muscle tissue get shortened only when the sarcomere changes structurally. Myosin form cross bridges with the actin as they head towards the thick filament. Myosin then pulls the thin filaments and shortens the sarcomeres thereby shortening the skeletal muscles. This process continues till the active sites on actin remain exposed and there is ample availability of calcium ion and ATP.

Hence, the given statement is true

7 0
3 years ago
Dutch elm disease is a disease that affects elm trees and is caused by a fungal species that infects the vascular systems of the
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2 years ago
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