Answer:
(B) calmodulin
Explanation:
Calcium in cells acts as second messenger molecule which regulates the very important physiological and cellular process of cell-like neurotransmission, cell migration, secretion, fertilization and many others.
Calcium acts as a messenger by binding to a calcium-binding protein called calmodulin. Calmodulin forms complex with 4 calcium ions through the side amino acids present in the structure of calmodulin.
Thus, calmodulin is the correct answer.
Please be informed that plants which are adapted to grow in water are known as <u>aquatic</u> <u>plants</u> eg: lotus and hydrilla
However, the observable characteristics of plants which grow on water are:
- Deeply dissected and waxy leaves
- Specialized pollination mechanism variation in growth pattern.
<h3>What are living organisms?</h3>
Living organisms; be it plants or animals are any organic or living system which is composed of cells and function as an individual entity.
- Generally, all living organisms share a number of key characteristics or functions such as movement, respiration, homeostasis, reproduction, growth, evolution, competition and others.
- Animals and plants also posesses systems such as the digestive, skeletal, transport, nervous, excretory, respiratory and reproductive system.
- Living organisms are also taxonomically classified as either unicellular microorganisms or multicellular plants and animals
So therefore, please be informed that plants which are adapted to grow in water are known as aquatic plants eg: lotus and hydrilla
Learn more about living organisms:
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Answer:
well theory is ranked second highest in certainty in scientific nomenclature. theory dictates it is more certain of a principle than a hypothesis yet not concrete enough to be a law. examples are the theory of evolution versus the law of gravity
Answer: the correct answer is d. all of the above must happen for defecation to occur.
Explanation:
In response to the distention of the rectal wall, the receptors send sensory nerve impulses to the sacral spinal cord. Motor impulses from the cord travel along parasympathetic nerves back to the descending colon, sigmoid colon, rectum, and anus. The resulting contraction of the longitudinal rectal muscles shortens the rectum, thereby increasing the pressure within it. This then opens the internal sphincter.
