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AlladinOne [14]
4 years ago
10

True or false: during muscle contraction, the fibers increase in length and circumference, but decrease in hardness.

Biology
1 answer:
Vika [28.1K]4 years ago
7 0

Answer: B, false

Explanation: Contraction is the process of becoming smaller. The fibers would not increase in length or circumference, they'd become shorter and tighter, and therefore, harder.

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Would a skeletal muscle fiber still have striations if it lacked thin filaments? Explain.
Anestetic [448]

Answer:

The answer is NO.

Explanation:

The striations that are caused in the skeletal muscle fibers exist due to the overlapping of the thick filaments with the thin filaments. Hence, if thins filaments would not be present in the myofibrils of a skeletal muscle fiber, then striations would not be caused.

The same goes for thick filaments. If there would be no thick filaments in the myofibrils of the skeletal muscle fiber, then no striations will be caused.

5 0
3 years ago
5. what is bio printing ?
steposvetlana [31]

Bioprinting involves the use of biomaterials in the printing process. The

biomaterials are used with standard 3-D materials in order to produce prints

which form a replica of the body and are able to imitate the body cells and

tissues.

Organs which are commonly bioprinted include the kidney, heart , liver and spleen.

Bioprinting is important as it helps in the area of researches to measure

organs functions and metabolism.It is therefore unethical due to the risk of

cancer and safety complications which is mostly irreversible as a result of

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Read more on brainly.com/question/25468891

3 0
3 years ago
An excretory system that is partly based on the filtration of fluid under high hydrostatic pressure is the _____.
Neporo4naja [7]

An excretory system that is partly based on the filtration of fluid under high hydrostatic pressure is the kidneys.

The paired kidneys are frequently regarded as the primary excretory organs. The generation of urine, a liquid waste product, by the kidneys serves as the body's main method of excreting extra water and waste from circulation.

What are kidneys?

  • Excretory systems maintain the right concentrations of water, salts, and nutrients while eliminating metabolic wastes to regulate the chemical composition of bodily fluids. In vertebrates, this system is made up of the kidneys, liver, lungs, and skin.
  • Kidneys are the vital organ of the human body.
  • Kidneys helps in removing wastes and extra fluids from the human body.
  • Kidneys helps in removing acid from the body, which maintain the balance in the cell.
  • Kidneys also helps in regulating and filtering the blood.
  • Kidneys helps in synthesizing the cells, which makes blood cells.
  • Kidneys helps in regulating the blood pressure.

To learn more about kidneys visit: brainly.com/question/2478967?

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3 0
2 years ago
Why does the bread easily get molds than the rice​
Marina CMI [18]

Answer:

The sugar content

Explanation:

Bacteria are attracted to sugar, so maybe, they try to get the sugars and mold the bread.

3 0
3 years ago
Where does most gas exchange between the atmosphere and the pulmonary blood occurs in mammals? question 10 options:
Alexandra [31]
In mammals, alveoli is the region inside lungs where gaseous exchange occur between pulmonary blood and atmosphere.
3 0
3 years ago
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