Answer: d. These filaments help the cell to withstand mechanical stress.
Explanation:
Intermediate filaments are the rope like fibers. These filaments form an extensive network ranging from the nucleus to the plasma membrane thus these filaments entirely cover the cytoplasma of the cell. These are developed from the cytoskeletal proteins. They have a diameter that is intermediate between thick and thin myofibrils. The diameter of the myofibril is in between 10 to 12 nm. They stabilize the nucleus. The main function of the intermediate filaments is to provide mechanical strength to the cells that will help them to withstand stress during stretching, elongation and changing shape.
The main responsible for the delay among the atrial and
ventricular contractions is the action potential conduction velocity of the AV
node cells. If the atria and ventricles contract simultaneously, atria cannot
give any help in filling the ventricles, which is needed, especially in those
with stiff ventricles as in the elderly. Hence atria have to contract first and
then the ventricles.
Answer:
I'm pretty sure the answer is b because since multicellualr organisms have more cells, they carry out more functions rather than a singlecellular organism.
Explanation:
Answer:
The answer to your question is the last one.
Explanation:
Anaerobic respiration uses fermentation whereas aerobic respiration uses glycolysis, the Krebs cycle, and the electron transport chain.
Both kinds of respiration uses glycolisis after this process, anaerobic respiration goes to fermentation and aerobic respiration goes to the Krebs cycle, so this answer is incorrect.
Aerobic respiration gives off carbon dioxide whereas anaerobic respiration gives off oxygen.
This answer is incorrect because aerobic respiration gives off oxygen but anaerobic respiration gives off different molecules like ethanol, lactic acid or acetic acid.
Anaerobic respiration takes place without the use of oxygen whereas aerobic respiration uses oxygen at the end of the electron transport chain.
I think this option is correct but is not the primary distinguishing factor between anaerobic and aerobic respiration, so this option is incorrect.
Anaerobic respiartion only takes place in yeast and bacteria whereas aerobic respiration always takes place in higher organisms such as plants and animals.
In my opinion, this option is correct it describes one of the primary factors that distinguish between aerobic and anaerobic respiration.
They will become extinct and the level of oxygen in the atmosphere decreases and. carbon emissions increases