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2 years ago

What is the IMA of the following pulley system?

1 answer:

6 0

The IMA of pulley system can be defined as the ratio of output force to input force.
From the given pulley system,
The input force =
The output force =
Hence, IMA of the given pulley system,

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C.Glucose

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2 years ago

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3 years ago

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Answer:

An ecosystem consists of a community of organisms together with their physical environment. In ecosystems, both matter and energy are conserved. Energy flows through the system usually from light to heat while matter is recycled.

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2 years ago

_____ is the study of how organisms interact with the living and nonliving parts of their environment.

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Answer:

c. Ecosystem science

Explanation:

<em>Sustainability is incorrect because it means the existence of resources for a long term.</em>

<em>Environmental science is incorrect because it is the branch of science that studies the processes and interactions that affect the environment.</em>

<em>Biodiversity science is incorrect because it is the study of various species that occupy a particular area.</em>

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3 years ago

In the alveolus pictured above, a disease or

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<h2><u>Full Question:</u></h2>

In the alveolus pictured above, a disease or injury to which structures would reduce the ability of oxygen to diffuse from the alveolar space to the capillary?

A. A and B

B. B and C

C. B and D

D. A and D

<h2><u>Answer:</u></h2>

The correct answer is option D.

<h3><u>Explanation:</u></h3>

Alveoli is defined as the unicellular thickened sac like structure of lungs which helps in exchange of gases in lungs. The exchange membrane of lungs comprise of three structures -

A. The epithelium cells of Alveoli,

B. The basement membrane of alveolar epithelium,

C. The endothelial layer of blood capillary.

The red blood cells described here won't cause any problems to the diffusion of gases from alveolar cavity to blood. The structures mentioned here as the type 2 cells of Alveoli which secrete lecithin, a surfactant which releases the surface tension of Alveoli. This compound prevents the Alveoli from collapsing and helps in diffusion of gases. The other structure mentioned here as D are the alveolar epithelium which is the unicellular thickened membrane of Alveoli, helping in gaseous exchange.

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3 years ago