The control tube means a protective sheath for guiding the control cable. The controlling tube connects the control drive mechanism to the radiographic exposure device.
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Answer:
In se*ual reproduction, mitochondria are normally inherited exclusively from the mother; the mitochondria in mammalian sperm are usually destroyed by the egg cell after fertilization. ... The fact that mitochondrial DNA is maternally inherited enables genealogical researchers to trace maternal lineage far back in time.
Answer:
The case in which facilitated diffusion would be needed is in the transport of large non-polar molecules moving down the concentration gradient.
Explanation:
Facilitated diffusion (FD) involves a form of passive transport, that is, it does not require energy and mobilizes substances across the cell membrane in favor of a concentration gradient.
The passive transport mechanism of FD is necessary only in the case of transport of very large molecules or polar molecules that:
- Cannot be transported by simple diffusion, due to the selective permeability of the membrane
- They follow a concentration gradient, from the place with the highest concentration to the one with the lowest concentration.
For FD to occur, it requires the use of a protein, which acts as a carrier of the molecules to be mobilized.
The other options are not correct because:
<em> A and C. Passive transport, as facilited diffusion, implies movement in favor of a concentration gradient.</em>
<em> B and C. Non-polar small or very small molecules can cross the membrane by simple diffusion.</em>
Genetics: that deals with the heredity and are varnation of organisms.
and
Enviroment: that condition by which one is surrounding.
"I think"
<span>The correct answers are "high; low" in that order. This is the correct answer because hydrogen ions (h+) are in a higher concentration extracellularly The ions are then pumped back into the intracellular matrix via the atp synthase pump where there is a lower concentration of h+ ions.</span>
