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valkas [14]
3 years ago
13

Why is oxygen necessary for muscle contraction?

Biology
1 answer:
FrozenT [24]3 years ago
5 0
During period of time of heavy lifting or extreme muscleman air , sinew do not get oxygen quickly enough to provide vitality . In these face , the body must convert a substance called pyruvate into a substance called lactate, reports Scientific American language . Too much reliance on lactate can confidential information to high levels of acidulousness in muscles and disruption of metabolites. When muscles have adequate oxygen, a person performs aerobic physical exercise for extended periods without trouble. Production of lactate only generates enough energy for one to three moment of anaerobic activity.
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In African areas that are prone to malaria having normal blood leaves you prone to contracting malaria and death. Having sickle
aev [14]

Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.

7 0
3 years ago
PLS HELP ASAP 50 POINTS AND BRAINLIEST USER
Kryger [21]

Plasma membrane - protect cell from it's surroundings. In both kinds of cells.


Cytoplasm - supports rounded cell structure, within it are all the organelles. Contains chemicals needed by the cell. In both kinds of cells.


Nucleus - contains DNA and is the control center of the cell. In both kinds of cells.


Nuclear envelope - surrounds nucleus, makes sure important molecules (DNA) stay within the nucleus. In both cells.


Nucleolus - makes ribosomes. In both cells.


DNA - genetic information for development and function. In both cells.


Rough ER - produces proteins. In both cells.


Smooth ER - makes and stores lipids (fats). In both cells.


Golgi body - sort and process macromolecules (proteins, lipids, etc). In both cells.


Ribosomes - makes proteins. In both cells.


Vacuoles - very large in plants, a storage center. In both cells.


Lysosome - digests and removes wastes. In both cells.


Mitochondria - energy powerhouse, produce ATP energy. In both cells.


Cytoskeleton - shapes, supports, and facilitates movement. In both cells.


Centrioles - cell division (form spindle fibers). Only in animal cells.


Cilia - movement for microorganisms. Only in animal cells.


Chloroplasts - photosynthesis, helps absorb sunlight and make food for the plant. Only in plant cells.


Cell wall - strength, structure, filters molecules going in and out of the cell. Only in plant cells.


Central Vacuole - holds materials and wastes, helps maintain proper pressure within the cell. Only in plant cells.


Hope this helps!

3 0
3 years ago
The photograph below shows a portion of the Genesee River in western New York. Letters A,B,C and D are locations in the river.
fenix001 [56]

Answer:c

Explanation:

The curve slows it down

4 0
3 years ago
The name of the glial cell that covers the capillaries in the brain with its perivascular feet, helping to form the blood-brain
blsea [12.9K]

Answer:

Astrocytes

Explanation:

Astrocytes are the most numerous cell type within the central nervous system (CNS) and they perform a myriad of tasks ranging from axon guidance and synaptic support, to the control of the blood brain barrier and blood flow.

4 0
3 years ago
Hawking states that much of human behavior has not been calculated to “aid in
ss7ja [257]

The complete statement made by Stephen Hawking is: "though much of its behaviour through out history, has been pretty stupid, and not calculated to aid the survival of the species."

If one looks at our history, there are some events that defy our capacity for logical thinking. One would think that, as we possess this capacity, we would be able to direct our decisions towards the survival of the human species.

However, in many cases greed and the desire for personal gain have taken precedence. One good example was the burning of the great library of Alexandria, one of the most significant libraries in the ancient world. This magnificent collection was lost during the siege of Alexandria, when Julius Caesar set on fire the ships in the harbor.

Another example is the atomic bomb, when science has been used to invent one of the most destructive weapons known to us. Atomic warfare is still a threat that may end all life on Earth.

Furthermore, the greed of some corporations has led to multiple ecological catastrophes that endanger not only other species but our own future as well. One example is the Bhopal gas leak in India, where in 1984, due to poor maintenance, the chemical plant released 30 metric tons of methyl isocyanite into the atmosphere.

8 0
4 years ago
Read 2 more answers
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