Question

1)how human being produce energy ?
2) what is lamarckism?
3) In which cell there is no cell membrane?
4) what is notochord?



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Answer 1

Answer:

1. The elements in our bodies, like sodium, potassium, calcium, and magnesium, have a specific electrical charge. Almost all of our cells can use these charged elements, called ions, to generate electricity. ... The flow of charges across the cell membrane is what generates electrical cuProkaryotic cells are surrThe notochord is the defining structure of the chordates, and has essential roles in vertebrate development. It serves as a source of midline signals that pattern surrounding tissues and as a major skeletal element of the developing embryo.The notochord is the defining structure of the chordates, and has essential roles in vertebrate development. It serves as a source of midline signals that pattern surrounding tissues and as a major skeletal element of the developing embryo.ounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.rrents.
2. William McDougall (1927) published a paper entitled “An Experiment for the Testing of the Hypothesis of Lamarck.” He reported that the first generation of rats made an average of 165 mistakes during their first run through a maze. After some practice the rats learned to carry out the task perfectly. The offspring of these trained rats, however, made an average of only 20 mistakes on their first run as if they had inherited the acquired maze-running ability. It was concluded that Lamarckian transmission is a real process in nature. Others have disagreed and speculated that the effect derives from parent-to-young training (Sonneborn, 1931). In any event, this is one of those tantalizing experiments that merits more thorough study. It is conceivable, for example, that McDougall's results could be explained by “trail marking” pheromones deposited by the first generation along the favorable route. A second maze for the offspring experiments, identical in design but pheromone-free, could be used to exclude this possibility. The point here is that Lamarckism is a testable concept.
3. Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.

4.

The notochord is the defining structure of the chordates, and has essential roles in vertebrate development. It serves as a source of midline signals that pattern surrounding tissues and as a major skeletal element of the developing embryo.

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Answer 2

Answer: Here's ur answer mate✅

Ans1) The elements in our bodies like sodium,potassium,calcium and magnesium have a specific electrical charge.Almost all of our cells can use these charged elements called ions,to generate electricity . The flow of charges across the cell membrane is what generates electrical currents.

Ans2) larmarckism or larmarckain inheritance also known as " Neo - Larmarckism " is the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime.

Ans3) Prokaryotic Cell

Prokaryotic Cells are surrounded by plasma membrane,but they have no internal membrane - bound organelles within their cytoplasm. The absence of a nucleus and other membrane - bound organelles differentiates Prokaryotes from another

class of organisms called eukaryotes.

Ans4) The notochord is the defining structure of the chordates, and has essential roles in vertebrate development.It serves as a source of midline signal that pattern surrounding tissues and as a major skeletal element of the developing of embryo.

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