The sarcomere will have uncontrolled muscle contractions.
Troponin blocks myosin-binding sites in the tropomyosin of the actin. If the troponin is damages, the myosin-binding sites will be exposed and myosin heads (of the myosin fiber) will be able to form cross-bridges with the actin even when not required.
Explanation:
This means the sarcomere will contract even when not required or expected hence resulting in symptoms like muscle spasms. Usually, troponin molecules exposes the myosin-binding sites on the tropomyosin upon binding of Ca²⁺ ions. These Ca²⁺ are usually released by the sarcoplasmic reticulum upon impulse from the inverted nerve.
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Answer:
A) Tissue
Explanation:
Cells are the basic and fundamental units of all living organisms. Plants, like every other multicellular living organisms, are composed of cells that perform different functions. A group of cells that perform similar functions make up or form TISSUES, tissues that work together form the ORGAN, organs that work together to perform same function form the ORGAN SYSTEM.
In plants, sieve tubes and companion cells work together to carry out a similar task in plants, which is to transport nutrients and sugar inside the plant. Since sieve tubes and companion cells work together to fulfil same task, they collectively form a tissue in plants called PHLOEM tissue.
Answer:
B
Explanation:
The size of a prokaryotic cell tend to be 10 to 100 times the size of a eukaryotic cell. Because prokaryotic cells contain a nucleus and a eukaryotic does not.
The best answer is "d" - the overuse of antibiotic. Emerging disease are those whose incidence has increased in the past two decades or threatens to increase in the near future. Such diseases include : 1. Old infections emerging as a result of antimicrobial resistance due to indiscriminate or poor use or over use of antibiotics. 2. New infections resulting from evolution or change of existing organisms. 3. Previously unrecognized infections in areas undergoing ecological transformation 4. Known infections spreading to new geographical areas or population. Antibiotic resistance has been on the rise and is now major concern.