Answer:
option D. continuous muscle spasms and convulsions
Explanation:
Sarin is an organophosphorus synthetic compound and is highly toxic. Sarin toxic is colorless and odorless. It act as a potent nerve agent and used as a chemical weapon. This toxic substance binds irreversibly with the enzyme acetylcholinesterase. This enzyme is responsible for degrading acetylcholine. The toxin interferes with the normal functioning mechanism of nervous system.
The organism poisoned by sarin could suffer paralysis, vomiting, continuous muscle spasms and convulsions. Thus, option D is correct.
Answer: Gas exchange that occurs at the level of the tissues is called internal respiration. The correct option is C.
Explanation:
Respiration a process in living organisms involves the production of energy, with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances. There are about four types of respiration and these includes:
- Ventilation
- External respiration
- Internal respiration
- cellular respiration
In respiration, passive movement of gases by diffusion occurs between cell surfaces in a process called gas exchange. Without this process, oxygen cannot be taken into the cells and carbondioxide released. I hope this helps. Thanks.
Answer:
C
Explanation:
Albedo is a measure of ‘whiteness’ or reflectivity which is also the rate at which a surface is able to reflect a percentage of solar radiation it receives. White surfaces have a higher albedo which is why Arctic and Antarctic regions with lots of ice sheets have a high albedo. They play a big role in regulating global temperatures. The larger the ice sheet cover in the antarctic and arctic regions, the more they reflect solar radiation back to space hence keeping the temperatures on earth from rising considerably.
Answer:
The Articular cartilage.
Explanation:
Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints. Healthy cartilage in our joints makes it easier to move. It allows the bones to glide over each other with very little friction. Articular cartilage can be damaged by injury or normal wear and tear.
All cells have selectively permeable membranes, which means that only they let certain important molecules inside the cell, while the others stay outside the cell.
This occurs by the process of diffusion or osmosis.
