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pochemuha
3 years ago
15

50 POINTS HURRYYYYYYYY

Biology
1 answer:
andreyandreev [35.5K]3 years ago
3 0

Answer: The answer is C or D I hope I got it write and let me know if the answer is correct Okay

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Due to the coronavirus pandemic, more scientists have taken to testing the effectiveness of different masks. Recently, conflicti
Kay [80]

Answer:

The answer to your question is <u>All of the above</u>

Explanation:

Science is observable, testable, and flexible. This is shown when doing an experiment. First you observe something, test, then record. When new information or evidence comes in, Science is flexible enough to allow changes to the topic's existing evidence or add on to it.

3 0
3 years ago
A polypeptide is a sequence of?<br> a. proteins<br> b. amino acids
Vilka [71]
A polypeptide is a chain of amino acids. The completed polypeptide chains come together to form proteins, so be careful not to get them mixed up!
Hope this helps!
8 0
3 years ago
Compare and contrast aerobic and anaerobic respiration. We need to discuss the following points: stages involved, locations in t
Tomtit [17]

Answer:

Differences between aerobic and anaerobic respiration is whether or not oxygen is present. . During aerobic respiration, carbon dioxide, water, and ATP are produced. During anaerobic respiration, lactic acid, ethanol, and ATP are create, aerobic os used when heart rate and breathing rate rise, anaerobic is used during the first 1-2 mins of exercise, occurs in the cytoplasm of cells, while aerobic occurs in the mitochondria of the cells,  glycolysis occurs in both,  both are respiration, and both create ATP

Explanation:

7 0
3 years ago
Explain the purpose of the placenta and describe how a fetus gets its nutrients.
marusya05 [52]

Answer:

The placenta is the temporary association of fetus and maternal tissue. It is meant for nutrition and transport of different substances.

Explanation:

The placenta is a temporary association of fetal and maternal tissues. The placenta is formed from the trophoblast of the blastula. These trophoblasts   form chorionic villi which later forms the placenta. The chorion and allantois also take part in the formation of the placenta. Hence, the human placenta is known as the chorioallantoic placenta. The process of formation of the placenta is known as placentation.  

The placenta has several functions but the major function is to provide nutrition to the fetus. The developing fetus gets nutrition from the mother's body by the placenta. The placenta provided with blood vessels which help in the transportation of different substances. It also helps in gas exchange between the mother and baby. Thus it plays a vital role in fetal respiration. The metabolic wastes diffuse through the placenta. Placenta also stores fat, glycogen, which participates in protein metabolism.

7 0
3 years ago
1. Why is it important to the entire scientific community uses the metric system, rather than each country having its choice to
scoundrel [369]

It is important the entire scientific community uses the metric system rather than each country having its own system because when scientist are comparing or sharing results they wont have to do extra steps of converting to different measurements it will just be the same and less confusing.

Explanation:

4 0
3 years ago
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