Are there living beings devoid of cells
Are there living beings devoid of cells?
Expert
The Viruses are considered the only living beings that don’t have cells. Viruses are constituted through the genetic material (RNA or DNA) enwrapped by the protein capsule. They don’t encompass membranes and cell organelles nor do they encompass self-metabolism.
Briefly distinguish the terms Active immunity and passive adapted immunity.
Describe what is the osseous cavity, at the location of pituitary gland?
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Why the bryophytes are generally considered as the “amphibians of plant world”?
compare the digestion in protozoa and sponges
Define the term homeostasis? What are sensors, controllers and effectors of the homeostasis?
Give a brief explanation of the term radio immuno assay.
Where the adrenal glands are situated? How many are they and what are their portions?
How the fish epidermis is different from the amphibian epidermis?
Why do mitochondria of sperm cells concentrate within the base of the flagellum?
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