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chubhunter [2.5K]
3 years ago
6

during the race the body temperature of a runner increases. The runner body responds by perspiring (sweating), which lowers the

body tempature. This process is an example of
Biology
2 answers:
torisob [31]3 years ago
3 0
The answer is perspiration maintaining homeostasis
9966 [12]3 years ago
3 0

Answer:

Maintain homeostasis through feedback inhibition

Explanation:

The human body tends to maintain constant internal conditions, which is the homeostasis. Irrespective of the level of physical activity or temperature of surroundings, the body temperature stays around 37 degrees Celsius. Any deviation from the narrow range of body temperature activity the feedback system to restore the homeostasis.

For example, during excess physical activity such as race, the body temperature is raised due to increased production of heat. The body's thermostat senses the deviation and signals the effector organs to restore the normal range of body temperature.

One of the mechanisms is secretion of sweat from sweat glands present in the skin. Evaporation of sweat from the body surface leaves the body's surface cool behind.

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Cilia are composed of microtubules. How are microtubules different from the other cytoskeletal filaments?
Maru [420]

Answer:

They are thick, strong and made up of thousands of tubulin which are spiral in shape.

Explanation:

In eukaryotic cells, they have microtubules which are fibres serving as tracks for cell to cell transport and regulate the shape of a cell.

Microtubules are different from other cytoskeletal filaments because they possesses a cylindrical shape with the tube having a larger diameter of 20-25 nm as compared to microfilament that have a diameter of 3-6 nm.

Microtubules are made of subunits of proteins called tubulin named alpha and beta that is not present in other cytoskeletal filaments.

4 0
3 years ago
Electron microscopes use
Pavel [41]

Electron microscopes use _beam of electrons___ in order to allow for higher magnification and more detail when viewing specimens.

Explanation:

A beam of electrons has a shorter wavelength than normal light used in light microscopes, by approximately a factor of X 100000. Therefore, electrons microscope have the inherent attribute of having a very high resolution. They have been used to discover very small organelles in cells such as the ribosomes and mitochondria that cannot be clearly viewed even with the highest resolution in light microscopes.

Learn More:

For more on electron microscopes check out;

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#LearnWithBrainly

6 0
2 years ago
In 2019, the United Nations assembled a team of scientists to conduct the biggest ever study of
sashaice [31]

Answer: Climate change

Explanation:

UN Climate Action Summit 2019 was organized in 2019 to discuss the domain of global climate change research. According to this dangerous impact of climate will influence the growth of new generations to come. This included various participating organizations like World Meteorological Organization, Panel on Climate Change, Earth league and global framework, UN Environment, Global carbon project and others.

8 0
3 years ago
Why are red blood cells unable to replace damaged proteins
Rainbow [258]

The sole reason why red blood cells are unable to replace damaged proteins is that red blood cells lack DNA and cell organelles such as the nucleus, ribosomes, and mitochondria which are crucial for protein synthesis, assembly, and repair. In other words, they lack both the information and the machinery for making or repair of proteins.

Due to lack of DNA and cell organelles, red blood cells cannot be able to satisfy the central dogma which summarizes synthesis of proteins as DNA → RNA → proteins.

DNA has the genetic information on how proteins should be made, RNA is responsible for transferring the information from DNA in the cell nucleus to the ribosomes in the cytoplasm,  then translating or decoding this information, which results in the making of protein.

7 0
2 years ago
List one internal and one external signal that can induce cells to prepare and enter into mitosis
earnstyle [38]
Let me go look this up ill be right back okay....
3 0
3 years ago
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