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solmaris [256]
4 years ago
11

Certain amino acids are called essential because they ______.

Biology
1 answer:
kumpel [21]4 years ago
3 0
Essential amino acids are amino acids that must be supplied to one's body by their diet because they cannot be synthesized from scratch. 
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The forensic anthropologists learn that "Grave 15" contained the remains of numerous women and children from the Guatemalan massacre during the height of Guatemala’s civil war. Due to their clothing and jewelry, their ancestry was traced and that they came from Río Negro. The forensic team uses DNA to identify each skeleton and return them to their families.

 

 

6 0
3 years ago
Precipitation of water on the land surface in the hydrologic cycle leads directly to
user100 [1]
Precipitation of water on the land surface in the hydrologic cycle leads directly to evaporation, filtration and run off
When water is release from clouds in the form of rain, sleet, hail, freezing rain, or snow precipitation happens. It is the main connection in the water cycle that gives for the transfer of atmospheric water to the Earth. 
7 0
3 years ago
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Which cell organelles are the sites of aerobic cellular respiration in both plant and animal cells?
natali 33 [55]
The answer is mitochondria
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3 years ago
Describe the process of the respiratory system. No google answer. ASAP
lilavasa [31]

the respiration in human start from breathing.the oxygen is inhale and passes through larynx and reaches upto trachea and it goes in the bronchus.it is also divided into bronchoioles. it leads into lung

the bronchoioles that enter in the lung lead to small air sac called alveoli and it exchange gases and here exchange of gas occur and carbon dioxide is transported back to nostril through same passage and the canbondioxie is exhaled.in this way the process of respiration is completed

hope this helped..

4 0
3 years ago
How do the structures in an organism relate to their functions?
finlep [7]

The study of the relationship between structures and functions is at the very heart of biology. This relationship is expressed in living beings by the adaptation of the first to the second and poses a series of absolutely fundamental problems, such as the relationship between causality and finality, analogy and homology, structural improvement and evolutionary level, etc.

For example, the structure of the hand is related to its function, thanks to the fingers and the thumb it is easy to wear and store objects.

The zigzag structure of the intestine is related to its absorption function, as this makes it possible to increase the contact surface between the alimentary bolus and the intestinal wall, and thus to increase the absorption.

7 0
3 years ago
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