64 triples of nucleotides
Answer:
C. tetanic contractions might occur, which would stop the heart's pumping action.
Explanation:
The absolute refractory period of the cardiac muscle action potential refers to the time interval when the voltage gated sodium channels are inactivated. The absolute refractory period lasts ~180 msec. The action potential lasts 200-220 msec.
The refractory period of cardiac muscle is dramatically longer than that of skeletal muscle. This prevents tetanus from occurring and ensures that each contraction is followed by enough time to allow the heart chamber to refill with blood before the next contraction.
In order words, It is important for the cardiac muscle cells to have a longer refractory period, because if they were short like the skeletal muscles, the heart could enter tetanic contraction/summation which is when muscle is stimulated so rapidly that it does not have a chance to relax at all between stimuli.
Answer:
The correct answer will be option- capsule.
Explanation:
The fungal pathogen <em>Cryptococcus neoformans</em> causes cryptococcosis disease which affects the impaired immunity individuals like individuals with advanced HIV infection. Thus basic proliferation and evasion processes are necessary to understand to treat this infectious disease caused by this agent.
The major virulence factor of the fungal pathogen is the component of cell wall and polysaccharide called "capsule" and is the target of the antifungal drugs.
Thus, option-capsule is the correct answer.
Answer:
Desert tortoises are native to the American Southwest and these reptiles are completely herbivorous. Their diet includes mostly desert grasses, leafy plants and flowers. Some people keep these tortoises as pets and many make the mistake of indiscriminately feeding them store-bought produce. While store-bought produce can be part of a desert tortoise's diet, it should be limited to dark leafy greens that are high in fiber -- such as kale, collard greens, spinach and parsley.
Explanation:
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<span> The </span>xylem<span> transports water and soluble mineral nutrients from the roots throughout the </span>plant<span>. It is also used to replace water lost during transpiration and photosynthesis.</span>
